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La nébuleuse planétaire NGC 2899 est située à 4 500 années-lumière de la Terre et à 25 895 années-lumière du centre galactique dans la constellation australe des Voiles (Vela). Cet objet présente un flux de gaz cylindrique, bipolaire et diagonal propulsé par le rayonnement et les vents stellaires d'une naine blanche située en son centre. En réalité, deux étoiles compagnes pourraient interagir et sculpter la nébuleuse, pincée en son centre par un anneau fragmenté (tore) qui ressemble à un beignet à moitié mangé. Elle présente une forêt de "piliers" gazeux pointant vers la source du rayonnement et des vents stellaires. Ses couleurs proviennent de l'hydrogène et de l'oxygène brillants (cf. NASA, ESA, STScI ; Image Processing : Joseph DePasquale STScI).
Pour situer la nébuleuse planétaire NGC 2899 (Hubble) dans la constellation australe des Voiles (Vela) :
Technical Information:
Telescope: AIRY APO 130T PrimaLuceLab
Mount: Paramount MyT - Software Bisque
Camera: QHYCCD QHY9
Filter: Optolong H-a 7nm, OIII 6.5nm, SII 6.5nm
Frames: H-a: 40x900s -- OIII: 40x900s -- SII: 18x900s
Total Integration: 24.5 Hours
Software: SGP – TheSkyX – PHD2 – DSS – PixInsight – CS6
Location: Noventa di Piave (Venice) 4 meter above sea level – ITALY
Environment Temperature: About 25°C
Relative Humidity: 82%
Date: 05.08.20 - 07.08.20 - 08.08.20 - 09.08.20 - 15.08.20 - 20.08.20 - 21.08.20 - 22.08.20
Taken from the AstroAtlas Observatory situated in Noventa di Piave (ITALY), this is my new version of NGC7635 in Hubble Palette Technique. I acquired it using the Optolong H-a, OIII and SII filters.
I am very happy of this result!
I have acquired the H-a data during full moon.
I hope you like it and clear skies!
NOTE: The image was acquired from a polluted sky with high humidity - Bortle 5.
The Prawn Nebula is located in the Sagittarius Arm of the Milky Way, in the constellation Scorpius. Other names include both IC 4628, and Gum 56. From our vantage point, it is about 6,000 light-years away. IC 4628 is an extensive stellar nursery containing a large number of very hot, luminous, young stars created from the surrounding gases.
The nebula is about 250 light-years in diameter, with an apparent size of 1.5 degrees. For reference, this would cover an area three to four times the size of the moon. With my instrument, the full moon will fill my sensor. Unfortunately, I can’t fit the entire complex within this image.
Gum 56 is very faint and emits light at wavelengths not visible to our eyes. Two luminous giants and several young stars in this nebula emit an incredible amount of ultraviolet radiation ionising the hydrogen gas. The result, it glows. Within this invisibility, many things are concealed. Material ejected from violent supernova in the past provides new materials that allow for the formation of new stars. The cycle of stellar life and death continues as dust and gases collapse down, forming new stars.
The photo presented is a narrowband image created by combining filtered light from SII, Ha, and OIII filters. It allows us to reveal details of objects that we cannot see easily, or not at all. Often, the results can be very striking and dramatic. I tried to retain that pleasing gradient of yellow golds, through bands of teal, and hues of blue found in a traditional Hubble Palette image. I was pleased with the star colours ranging from blue to red, using only the narrowband filters. These colours appear very different from a traditional true colour image constructed with red, green, blue filtered light.
Instruments:
• 10 Inch RCOS fl 9.1
• Astro Physics AP-900 Mount
• SBIG STL 11000m
• FLI Filter Wheel
• Baader Planetarium H-alpha 7nm Narrowband-Filter
• Baader Planetarium OIII 8.5nm Narrowband-Filter
• Baader Planetarium SII 8.0nm Narrowband-Filter
Exposure Details:
• SII 22 X 1800
• Ha 22 X 1800
• OIII 24 X 1800
Total Exposure Time: 34.0 Hours
M16 meglio conosciuta come nebulosa dell'aquila è una vasta regione di idrogeno.
La distanza è di circa 5700 anni luce anche se la misura è piuttosto incerta.
Fotografia scattata con l'osservatorio remoto personale 3zObservatory nel periodo che va dagli ultimi giorni di giugno ai primi di luglio 2019 dal sottoscritto Paolo Zampolini e Giorgio Mazzacurati. Composizione a banda stretta di circa 11 ore di integrazione a bin2
Strumentazione:
RC12GSO su EQ8
CCD G24000-Astrodon Filter
33x600s Halpha
20x600s per S2
18x600 per O3
Elaborazione tramite Pixinsight/Photoshop
The jellyfish galaxy JW39 hangs serenely in this image from the NASA/ESA Hubble Space Telescope. This galaxy lies over 900 million light-years away in the constellation Coma Berenices, and is one of several jellyfish galaxies that Hubble has been studying over the past two years.
Despite this jellyfish galaxy’s serene appearance, it is adrift in a ferociously hostile environment; a galaxy cluster. Compared to their more isolated counterparts, the galaxies in galaxy clusters are often distorted by the gravitational pull of larger neighbours, which can twist galaxies into a variety of weird and wonderful shapes. If that was not enough, the space between galaxies in a cluster is also pervaded with a searingly hot plasma known as the intracluster medium. While this plasma is extremely tenuous, galaxies moving through it experience it almost like swimmers fighting against a current, and this interaction can strip galaxies of their star-forming gas.
This interaction between the intracluster medium and the galaxies is called ram-pressure stripping, and is the process responsible for the trailing tendrils of this jellyfish galaxy. As JW39 has moved through the cluster the pressure of the intracluster medium has stripped away gas and dust into long trailing ribbons of star formation that now stretch away from the disc of the galaxy.
Astronomers using Hubble’s Wide Field Camera 3 studied these trailing tendrils in detail, as they are a particularly extreme environment for star formation. Surprisingly, they found that star formation in the ‘tentacles’ of jellyfish galaxies was not noticeably different from star formation in the galaxy disc.
[Image Description: A spiral galaxy. It is large in the centre with a lot of detail visible. The core glows brightly and is surrounded by concentric rings of dark and light dust. The spiral arms are thick and puffy with grey dust and glowing blue areas of star formation. They wrap around the galaxy to form a ring. Part of the arm is drawn out into a dark thread above the galaxy, and dust from the arm trails off to the right.]
Credit: ESA/Hubble & NASA, M. Gullieuszik and the GASP team CC BY 4.0
Appearing within the boundless darkness of space in this NASA/ESA Hubble Space Telescope snapshot, NGC 34 looks more like an otherworldly, bioluminescent creature from the deep oceans than a galaxy. Lying in the constellation Cetus (the Sea Monster), the galaxy’s outer region appears almost translucent, pinpricked with stars and strange wispy tendrils.
The main cause for this galaxy’s odd appearance lies in its past. If we were able to reverse time by a few million years, we would see two beautiful spiral galaxies on a direct collision course. When these galaxies collided into one another, their intricate patterns and spiral arms were permanently disturbed. This image shows the galaxy's bright center, a result of this merging event that has created a burst of new star formation and lit up the surrounding gas. As the galaxies continue to intertwine and become one, NGC 34’s shape will become more like that of a peculiar galaxy, devoid of any distinct shape.
In the vastness of space, collisions between galaxies are quite rare events, but they can be numerous in mega-clusters containing hundreds or even thousands of galaxies.
Image Credit: ESA/Hubble & NASA, A. Adamo et al.
#NASA #MarshallSpaceFlightCenter #MSFC #Marshall #HubbleSpaceTelescope #HST #astronomy #space #astrophysics #solarsystemandbeyond #gsfc #Goddard #GoddardSpaceFlightCenter #ESA #EuropeanSpaceAgency #galaxy
NGC 1672 is a barred spiral galaxy located in the constellation Dorado and is 60 million light-years away from earth.
This Data was taken from the Hubble Legacy Archive and processed by me.
Programms used for processing: Pixinsight, Darktable, GIMP
Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).
Située dans la constellation de la Chevelure de Bérénice (Coma Berenices), dans l'amas de Coma, la galaxie spirale NGC 4921 se situe à 310 millions d'a.l. de la Terre. Elle possède un noyau lumineux, une barre centrale brillante, un anneau proéminent de poussière noire et des amas bleus d’étoiles récemment formées. Plusieurs galaxies plus petites l'accompagnent, des galaxies non apparentées, tout comme dans la Voie lactée (cf. site Hubble).
Pour situer l'astre dans sa constellation :
www.flickr.com/photos/7208148@N02/48775942151/in/datepost...
This image, captured by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 (WFC3), shows a galaxy named UGC 6093. As can be easily seen, UGC 6093 is something known as a barred spiral galaxy — it has beautiful arms that swirl outwards from a bar slicing through the galaxy’s center. It is classified as an active galaxy, which means that it hosts an active galactic nucleus, or AGN: a compact region at a galaxy’s center within which material is dragged towards a supermassive black hole. As this black hole devours the surrounding matter it emits intense radiation, causing it to shine brightly.
But UGC 6093 is more exotic still. The galaxy essentially acts as a giant astronomical laser that also spews out light at microwave, not visible, wavelengths — this type of object is dubbed a megamaser (maser being the term for a microwave laser). Megamasers such as UGC 6093 can be some 100 million times brighter than masers found in galaxies like the Milky Way.
Image Credit: ESA/Hubble & NASA
The sharp eye of the NASA/ESA Hubble Space Telescope captured the tiny moon Phobos during its orbital trek around Mars on 12 May 2016. The observations were intended to photograph Mars while it was on its closest approach to Earth along its orbit, so the moon’s cameo appearance was a bonus.
Over the course of 22 minutes, Hubble took 13 separate exposures, allowing astronomers to create a timelapse video showing the movement of Phobos around its host planet. Because the moon is so small, just 27×22×18 km, it appears star-like in the images.
It also orbits incredibly close to Mars, just 6000 km above the planet, making it closer to its parent planet than any other moon in the Solar System.
Sibling Deimos orbits much further out, at a distance of some 23 500 km.
While the origin of the moons is much debated, their fate is inevitable. Phobos is gradually spiraling in towards Mars and within 50 million years will likely either break up due to the planet’s gravity, or crash into its surface. Meanwhile, the opposite is true for Deimos: its orbit is slowly taking it away from Mars.
This image was first published on 20 July 2017.
Credit: NASA, ESA and Z. Levay (STScI) Acknowledgment: J. Bell (ASU) and M. Wolff (Space Science Institute)
Not all galaxies are neatly shaped, as this new NASA/ESA Hubble Space Telescope image of NGC 6240 clearly demonstrates. Hubble previously released an image of this galaxy back in 2008, but the knotted region, shown here in a pinky-red hue at the centre of the galaxies, was only revealed in these new observations from Hubble’s Wide Field Camera 3 and Advanced Camera for Surveys. NGC 6240 lies 400 million light-years away in the constellation of Ophiuchus (The Serpent Holder). This galaxy has an elongated shape with branching wisps, loops and tails. This mess of gas, dust and stars bears more than a passing resemblance to a butterfly and, though perhaps less conventionally beautiful, a lobster. This bizarrely-shaped galaxy did not begin its life looking like this; its distorted appearance is a result of a galactic merger that occurred when two galaxies drifted too close to one another. This merger sparked bursts of new star formation and triggered many hot young stars to explode as supernovae. A new supernova was discovered in this galaxy in 2013, named SN 2013dc. It is not visible in this image, but its location is indicated here. At the centre of NGC 6240 an even more interesting phenomenon is taking place. When the two galaxies came together, their central black holes did so too. There are two supermassive black holes within this jumble, spiralling closer and closer to one another. They are currently only some 3000 light-years apart, incredibly close given that the galaxy itself spans 300 000 light-years. This proximity secures their fate as they are now too close to escape each other and will soon form a single immense black hole.
Credit: NASA, ESA, the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration, and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University)
Telescopio o obiettivo di acquisizione: TS Optics APO102 triplet fpl53
Camera di acquisizione: Moravian G2-8300FW
Montatura: iOptron iEQ45-pro
Telescopio o obiettivio di guida: Orion Short Tube 80/400
Camera di guida: QHYCCD Q5L-II-M
Riduttore di focale: TS Optics 0,79x Reducer 4-element
Software: Pleiades Astrophoto S.L. PixInsight V1.8
Risoluzione: 3276x2436
Date: 27 luglio 2017
Pose:
Baader Ha 36mm 7nm: 18x600" -15C bin 1x1
Baader O3 36mm 8.5nm: 18x600" -15C bin 1x1
Baader S2 36 mm 8 nm: 18x600" -15C bin 1x1
Integrazione: 9.0 ore
Dark: ~13
Flat: ~15
Bias: ~31
Hubble’s Spirograph
In this classic Hubble image from 2000, the planetary nebula IC 418 glows like a multifaceted jewel with enigmatic patterns. IC 418 lies about 2,000 light-years from Earth in the direction of the constellation Lepus.
A planetary nebula represents the final stage in the evolution of a star similar to our sun. The star at the center of IC 418 was a red giant a few thousand years ago, but then ejected its outer layers into space to form the nebula, which has now expanded to a diameter of about 0.1 light-year. The stellar remnant at the center is the hot core of the red giant, from which ultraviolet radiation floods out into the surrounding gas, causing it to fluoresce. Over the next several thousand years, the nebula will gradually disperse into space, and then the star will cool and fade away for billions of years as a white dwarf. Our own sun is expected to undergo a similar fate, but fortunately, this will not occur until some 5 billion years from now.
The Hubble image of IC 418 is shown with colors added to represent the different camera filters used that isolate light from various chemical elements. Red shows emission from ionized nitrogen (the coolest gas in the nebula, located furthest from the hot nucleus), green shows emission from hydrogen and blue traces the emission from ionized oxygen (the hottest gas, closest to the central star). The remarkable textures seen in the nebula are newly revealed by the Hubble Space Telescope, and their origin is still uncertain.
Read more: go.nasa.gov/2roofKS
Credit: NASA and The Hubble Heritage Team (STScI/AURA); Acknowledgment: Dr. Raghvendra Sahai (JPL) and Dr. Arsen R. Hajian (USNO)
This Picture of the Week shows a dwarf galaxy named UGC 685. Such galaxies are small and contain just a tiny fraction of the number of stars in a galaxy like the Milky Way. Dwarf galaxies often show a hazy structure, an ill-defined shape, and an appearance somewhat akin to a swarm or cloud of stars — and UGC 685 is no exception to this. Classified as an SAm galaxy — a type of unbarred spiral galaxy — it is located about 15 million light-years from Earth.
These data were gathered under the NASA/ESA Hubble Space Telescope’s LEGUS (Legacy ExtraGalactic UV Survey) Program, the sharpest and most comprehensive ultraviolet survey of star-forming galaxies in the nearby Universe.
LEGUS is imaging 50 spiral and dwarf galaxies in our cosmic neighbourhood in multiple colours using Hubble’s Wide Field Camera 3. The survey is picking apart the structures of these galaxies and resolving their constituent stars, clusters, groups, and other stellar associations. Star formation plays a huge role in shaping its host galaxy; by exploring these targets in detail via both new observations and archival Hubble data, LEGUS will shed light on how stars form and cluster together, how these clusters evolve, how a star’s formation affects its surroundings, and how stars explode at the end of their lives.
Credits: ESA/Hubble & NASA; the LEGUS team, B. Tully, D. Calzetti Acknowledgement(s): Judy Schmidt (Geckzilla); CC BY 4.0
The exquisite sharpness of this 2005 image from NASA/ESA's Hubble Space Telescope has plucked out an underlying population of infant stars embedded in the nebula NGC 346 that are still forming from gravitationally collapsing gas clouds. They have not yet ignited their hydrogen fuel to sustain nuclear fusion. The smallest of these infant stars is only half the mass of our Sun.
Credit: NASA, ESA and A. Nota (STScI/ESA)
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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A bright blue tadpole appears to swim through the inky blackness of space. Known as IRAS 20324+4057 but dubbed “the Tadpole”, this clump of gas and dust has given birth to a bright protostar, one of the earliest steps in building a star.
There are actually multiple protostars within this tadpole’s ‘head’, but the glowing yellow one in this image is the most luminous and massive. When this protostar has gathered together enough mass from its surroundings, it will eventually emerge as a fully-fledged young star.
The intense blue glow is caused by nearby stars firing ultraviolet radiation at IRAS 20324+4057, which also sculpts its tail into a long, wiggly shape. In total, this clump spans roughly a light-year from head to tail-tip, and contains gas weighing almost four times the mass of the Sun.
Framed against a background of distant stars, IRAS 20324+4057 is making its way through the Cygnus OB2 association, a loose cluster of stars some 4700 light-years from Earth in the constellation of Cygnus. This association is one of the largest clusters known, and is famed for its heavyweight members. It contains some of the hottest, most massive and most luminous stars known, some of which are some two million times more luminous than the Sun.
The Tadpole is not alone in this interstellar pond. Just out of view to the bottom right of this image lies another curious object dubbed “the Goldfish” by astronomers. The Goldfish is about half the length of IRAS 20324+4057, and is also thought to be a globule of gas that is being both lit up and sculpted by radiation from cluster stars.
Completing this trio is a small clump of blue gas, informally nicknamed “the Wriggler” by some astronomers, visible in the bottom left of this Hubble image. All three objects have the same orientation in the sky and appear to be brighter on their northern sides, leading astronomers to believe they are being shaped by aggressive winds and radiation flowing from hot Cygnus OB2 stars towards the top right of the frame.
This image was originally released in August 2013 at the Hubble Heritage website: heritage.stsci.edu/2013/35/index.html
Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA), and IPHAS
Don’t be fooled! The cosmic swirl of stars in this NASA/ESA Hubble Space Telescope image may seem tranquil and unassuming, but this spiral galaxy, known as ESO 580-49, actually displays some explosive tendencies.
In October of 2011, a cataclysmic burst of high-energy gamma-ray radiation — known as a gamma-ray burst, or GRB — was detected coming from the region of sky containing ESO 580-49. Astronomers believe that the galaxy was the host of the GRB, given that the chance of a coincidental alignment between the two is roughly 1 in 10 million. At a distance of around 185 million light-years from Earth, it was the second-closest gamma-ray burst (GRB) ever detected.
Image Credit: ESA/Hubble & NASA
This image taken with the NASA/ESA Hubble Space Telescope depicts the open star cluster NGC 330, which lies around 180,000 light-years away inside the Small Magellanic Cloud. The cluster – which is in the constellation Tucana (the Toucan) – contains a multitude of stars, many of which are scattered across this striking image.
Because star clusters form from a single primordial cloud of gas and dust, all the stars they contain are roughly the same age. This makes them useful natural laboratories for astronomers to learn how stars form and evolve. This image uses observations from Hubble’s Wide Field Camera 3 and incorporates data from two very different astronomical investigations. The first aimed to understand why stars in star clusters appear to evolve differently from stars elsewhere, a peculiarity first observed with Hubble. The second aimed to determine how large stars can be before they become doomed to end their lives in cataclysmic supernova explosions.
Hubble images show us something new about the universe. This image, however, also contains clues about the inner workings of Hubble itself. The crisscross patterns surrounding the stars in this image, known as diffraction spikes, were created when starlight interacted with the four thin vanes supporting Hubble’s secondary mirror.
Text credit: European Space Agency (ESA)
Image credit: ESA/Hubble & NASA, J. Kalirai, A. Milone
For more information: www.nasa.gov/image-feature/goddard/2021/hubble-sees-a-clu...
By pushing NASA’s Hubble Space Telescope to its limits, an international team of astronomers has shattered the cosmic distance record by measuring the farthest galaxy ever seen in the universe. This surprisingly bright infant galaxy, named GN-z11, is seen as it was 13.4 billion years in the past, just 400 million years after the Big Bang. GN-z11 is located in the direction of the constellation of Ursa Major.
Read more: go.nasa.gov/1oSqHad
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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NGC 4402 and edge on spiral galaxy in the constellation Virgo.
This Data was taken from the Hubble Legacy Archive and processed by me.
First time trying out processing Hubble Data. I still need to find a way of removing the hotpixels. They are especially noticable in a stripe from the top to the bottom in the middle of the image. This is because Hubbles Sensor is made up of two sensors and that stripe is the seam between these two.
Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA).
At first glance, the galaxy NGC 4151 looks like an average spiral. Examine its center more closely, though, and you can spot a bright smudge that stands out from the softer glow around it. That point of light marks the location of a supermassive black hole weighing about 40 million times as much as our Sun.
Astronomers will use NASA’s James Webb Space Telescope to measure that black hole’s mass. The result might seem like a piece of trivia, but its mass determines how a black hole feeds and affects the surrounding galaxy. And since most galaxies contain a supermassive black hole, learning about this nearby galaxy will improve our understanding of many galaxies across the cosmos.
Image credit: NASA, ESA, and J. DePasquale (STScI)
Equipo Principal: ZWO ASI183MC-pro + Askar ACL200 + EQ6-R-Pro + ZWO EAF
Equipo guía: Hercules 32/130 mini guidescope, Player One Neptunce C-II
ASI183MC-pro:
*Gain 111, -15 º C, Optolong L-Ultimate 2", 364x300"
*Gain 111, -15 º C, Optolong Sii-CCD 6.5 nm 2", 97x300"
Tiempo Total de Integración: 38.4 h
50 Darks
70 Flats / 100 Darkflats por filtro
Polar alignment: Sharpcap 4
Adquisición: SGP 3.2
Guiado: Phd2
Procesado: Pixinsight 1.8.9, PS
Hubble’s 25 October view of Uranus puts the planet’s bright northern polar hood in the spotlight. It’s springtime in the northern hemisphere and the increase in ultraviolet radiation from the Sun seems to be causing the polar region to brighten. Researchers aren’t sure why. It could be a change in the opacity of atmospheric methane haze, or some variation in the aerosol particles. Curiously, even as the atmospheric hood gets brighter, the sharp southernmost boundary remains at the same latitude. This has been constant over the past several years of Hubble observations of the planet. Perhaps some sort of jetstream is setting up a barrier at that latitude of 43 degrees.
Credits: NASA, ESA, A. Simon (Goddard Space Flight Center), and M.H. Wong (University of California, Berkeley) and the OPAL team; CC BY 4.0
This image from the NASA/ESA Hubble Space Telescope shows a cosmic oddity, dwarf galaxy DDO 68. This ragged collection of stars and gas clouds looks at first glance like a recently-formed galaxy in our own cosmic neighbourhood. But, is it really as young as it looks?
Read more: sci.esa.int/hubble/54687-a-galaxy-of-deception-hubble-sna...
Credit: NASA, ESA. Acknowledgement: A. Aloisi (Space Telescope Science Institute)
This image from the NASA/ESA Hubble Space Telescope shows the barred spiral galaxy NGC 7496, which lies over 24 million light-years away in the constellation Grus. This constellation, whose name is Latin for crane, is one of four constellations collectively known as the Southern Birds. The others are Pavo, Phoenix and Tucana, which depict a peacock, phoenix, and toucan respectively. The rest of the night sky is also home to a flock of ornithological constellations, including an eagle (Aquilla), swan (Cygnus), crow (Corvus), and dove (Columba). This image comes from a collection of observations delving into the relationship between young stars and the cold, dense clouds of gas in which they form. In addition to observations with Hubble’s Wide Field Camera 3 and Advanced Camera for Surveys, the astronomers behind this project gathered data using the Atacama Large Millimeter/submillimeter Array (ALMA), one of the largest radio telescopes in the world. As well as shedding light on the speed and efficiency of star formation in a variety of galactic environments, this project is also creating a treasury of data incorporating both Hubble and ALMA observations. This treasure trove of data from two of the world’s most capable observatories will contribute to wider research into star formation, as well as paving the way for future science with the James Webb Space Telescope.
Credit: ESA/Hubble & NASA, J. Lee and the PHANGS-HST Team; CC BY 4.0
Available to purchase at Red Bubble.
www.redbubble.com/portfolio/images/13713981-hubble-bubble...
Photo 7/31 for the October 2014: A month in Pictures.
My images for this challenge will be here.
www.flickr.com/photos/janflicks/sets/72157648265274005/ and the link to the group is here: www.flickr.com/groups/photoadayforamonth/
Also using this for the 114 Pictures in 2014 group, No. 5 Liquid.
Another wet and windy day so yet another indoor shot. Oil and water with some wrapping paper underneath. It's not perfect, but I liked the shapes and colours in this one.
La galaxie NGC 4698 (Hubble) se situe à 55 millions d'années-lumière de la Terre dans la constellation de la Vierge (Virgo). Elle fait partie des plus de mille galaxies de l'amas de la Vierge, le plus proche des grands amas de galaxies liés par la gravité. Elle est semblable à la Voie lactée et possède des bras spiraux s'enroulant à l'intérieur d'un fin disque d'étoiles, de gaz et de poussière. Ces bras sont marqués par des amas opaques de poussière brune et parsemés de petits groupes d'étoiles bleues brillantes. Contrairement à de nombreuses autres galaxies spirales, ses délicats bras spiraux ne sont visibles qu'à la périphérie du disque, convergeant généralement vers le centre, mais semblent ici s'en éloigner en formant plutôt une structure annulaire à la périphérie.
Le centre de NGC 4698 est dominé par un bulbe galactique allongé, sa lueur diffuse blanc cassé provenant d'étoiles plus petites, plus anciennes, et plus froides que les étoiles bleues massives parsemant son disque externe. Ces étoiles, très regroupées, orbitent autour d'un trou noir supermassif dont la masse équivaut à des millions de fois celle du Soleil, ce trou noir étant en pleine croissance et attirant du gaz vers lui grâce à son attraction gravitationnelle.
Avec son disque plat et étoilé et son centre à la lueur diffuse, NGC 4698 ressemble beaucoup à une galaxie spirale typique, mais est loin d'être ordinaire puisqu'elle est l'une des rares galaxies spirales connues possédant un bulbe qui s'étend à angle droit depuis le disque. Si cette élongation est faiblement visible sur cette image, la lueur fantomatique du bulbe étoilé apparaît au-dessus et en dessous du disque poussiéreux. De plus, les étoiles et le gaz les plus proches de son centre tournent perpendiculairement au reste du disque !
Comment une galaxie peut-elle être aussi désynchronisée ? Le coupable se situe probablement à l'extérieur de la galaxie. Si celle-ci a absorbé du gaz provenant d'une source extérieure, ce gaz nouvellement accumulé aurait pu former un disque de gaz et d'étoiles en son centre, incliné par rapport au reste du disque. Certaines observations suggèrent que cette galaxie a autrefois connu une fusion galactique mineure, comme en témoigne une courte "queue" d'hydrogène s'échappant d'un côté de la galaxie.
Les données utilisées pour créer cette image proviennent d'un programme d'observation des galaxies de l'amas de la Vierge, qui permet d'étudier en détail ces galaxies relativement proches, notamment les amas d'étoiles et les nébuleuses. Parallèlement, ces données seront utilisées pour dresser un tableau plus global et comprendre comment le passage d'une galaxie au sein d'un amas influence son évolution et sa capacité à former de nouvelles étoiles (cf. Texte : ESA/Hubble ; Image : ESA/Hubble et NASA, D. Thilker, équipe MAUVE-HST).
Pour situer la galaxie NGC 4698 (Hubble) dans la constellation de la Vierge (Virgo) :
The NASA/ESA Hubble Space Telescope has provided astronomers with the sharpest view yet of the breakup of Comet C/2019 Y4 (ATLAS). The telescope resolved roughly 30 fragments of the comet on 20 April and 25 pieces on 23 April.
The comet was first discovered in December 2019 by the ATLAS (Asteroid Terrestrial-impact Last Alert System) and its fragmentation was confirmed in April 2020.
Learn more here.
Credits: NASA, ESA, D. Jewitt (UCLA), Q. Ye (University of Maryland); CC BY 4.0
This image from the Hubble Deep Ultraviolet Legacy Survey encompasses 12,000 star-forming galaxies in the constellation Fornax - a region known as the GOODS-South field. With the addition of ultraviolet light imagery, astronomers using NASA/ESA's Hubble Space Telescope captured the largest panoramic view of the fire and fury of star birth in the distant universe. The busiest star-forming period in the cosmos happened about three billion years after the big bang.
So far, ultraviolet light has been the missing piece of the cosmic puzzle. Now, combined with data in infrared and visible light from Hubble and other space- and ground-based telescopes, astronomers have assembled the most comprehensive portrait yet of the universe’s evolutionary history. The image straddles the gap between the very distant galaxies, which can only be viewed in infrared light, and closer galaxies, which can be seen across different wavelengths. The light from distant star-forming regions in remote galaxies started out as ultraviolet, but the expansion of the universe has shifted the light into infrared wavelengths. By comparing images of star formation in the distant and nearby universe, astronomers can get a better understanding of how nearby galaxies grew from small clumps of hot, young stars long ago.
Credit: ESA/Hubble & NASA
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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NGC7380 is also known as the “Wizard Nebula” and as Sharpless 142 (Sh2-142). This large nebula is in Cepheus and the gas surrounds open star cluster NGC7380. The nebula is fairly close to us at about 8,000 light years. Visually, the interplay of stars, gas, and dust has created a shape that appears to some like a fictional medieval sorcerer. The active star forming region spans about 100 light years, making it appear larger than the angular size of the Moon.
This rendition is a false colour mapping according the Hubble palette, using narrowband filters (RGB for the stars)
Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 15 hours (46x300s Ha + 36x300s O3 + 36x300s S2 + 3x21x300s RGB)
Date: September 2018 – July 2021
Location: Southern Alps, France
Here is a view of NGC 2261 also known as Hubble’s Variable Nebula. The dust cloud is being illuminated by the star R Monocerotis, the brightest area on the left of the fan-shaped nebula. It is thought the condensation near the star varies over time changing the illuminations of the fan. The star is roughly 2,500 light-years away from Earth.
Tech Specs: Sky-Watcher Esprit 120mm ED Triplet APO Refractor, Celestron CGEM-DX mount (pier mounted), ZWO ASI071MC-Pro running at -20C, 15 x 120 second exposures, GAIN 200, guided using a ZWO ASI290MC and Orion 60mm guide scope. Captured using SharpCap v3.2. Image date: January 22, 2020. Location: The Dark Side Observatory, Weatherly, PA, USA.
Hubble Captures a Drifting Galaxy
A large spiral galaxy is seen at center. Its core surrounded by concentric rings of dark and light dust. Its spiral arms hold grey dust and blue areas of star formation. Part of the arm is drawn out above the galaxy. Dust from the arm trails off to the right.
The jellyfish galaxy JW39 hangs serenely in this image from the NASA/ESA Hubble Space Telescope. This galaxy lies over 900 million light-years away in the constellation Coma Berenices and is one of several jellyfish galaxies Hubble has been studying over the past two years.
Despite this jellyfish galaxy’s serene appearance, it is adrift in a ferociously hostile environment: a galaxy cluster. Compared to their more isolated counterparts, the galaxies in galaxy clusters are often distorted by the gravitational pull of larger neighbors, which can twist galaxies into a variety of shapes. If that was not enough, the space between galaxies in a cluster is also pervaded with a searingly hot plasma known as the intracluster medium. While this plasma is extremely tenuous, galaxies moving through it experience it almost like swimmers fighting against a current, and this interaction can strip galaxies of their star-forming gas.
This interaction between the intracluster medium and the galaxies is called ram-pressure stripping and is the process responsible for the trailing tendrils of this jellyfish galaxy. As JW39 moved through the cluster, the pressure of the intracluster medium stripped away gas and dust into long trailing ribbons of star formation that now stretch away from the disk of the galaxy.
Astronomers using Hubble’s Wide Field Camera 3 studied these trailing tendrils in detail, as they are a particularly extreme environment for star formation. Surprisingly, they found that star formation in the ‘tentacles’ of jellyfish galaxies was not noticeably different from star formation in the galaxy disk.
Text credit: European Space Agency (ESA)
Image credit: ESA/Hubble & NASA, M. Gullieuszik and the GASP team
Media Contact:
Claire Andreoli
NASA's Goddard Space Flight Center, Greenbelt, MD
claire.andreoli@nasa.gov
Last Updated: May 26, 2023
Editor: Andrea Gianopoulos
Image released April 19, 2013.
Astronomers have used NASA's Hubble Space Telescope to photograph the iconic Horsehead Nebula in a new, infrared light to mark the 23rd anniversary of the famous observatory's launch aboard the space shuttle Discovery on April 24, 1990.
Looking like an apparition rising from whitecaps of interstellar foam, the iconic Horsehead Nebula has graced astronomy books ever since its discovery more than a century ago. The nebula is a favorite target for amateur and professional astronomers. It is shadowy in optical light. It appears transparent and ethereal when seen at infrared wavelengths. The rich tapestry of the Horsehead Nebula pops out against the backdrop of Milky Way stars and distant galaxies that easily are visible in infrared light.
Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.
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Recent observations revealing the many-armed, beautiful spiral galaxy NGC 2336 as only Hubble can. The imagery used to create this image was taken in January 2020. Meanwhile, the Chandra X-ray Observatory is also tasked with looking at this galaxy, though I haven't looked into the details of that, yet.
Edit: Checked on CXO observations, and so far none yet, but I did notice that of the proposed 200 kilosecond time, they only gave Dr. Antoniou 50 ks. Ouch! Here's hoping that's enough.
Data from the following proposal was used to create this image:
Determining How X-ray Binary Populations Vary Through Time
Note there are a number of blank areas in the image where data were absent. I filled those with background-matched noise to make them visually unobtrusive. Some other areas also lack a full range of color, being only covered by 1-2 filters.
The pixel scale is 0.05 arcseconds per pixel.
Red: ACS/WFC F814W
Green: ACS/WFC F555W
Blue: ACS/WFC F435W
North is exactly to the right.