View allAll Photos Tagged Intermediate
NGC 1566, sometimes known as the Spanish Dancer, is an intermediate spiral galaxy in the constellation Dorado, positioned about 3.5° to the south of the star Gamma Doradus. It was discovered on May 28, 1826 by Scottish astronomer James Dunlop. At 10th magnitude, it requires a telescope to view. The distance to this galaxy remains elusive, with measurements ranging from 6 Mpc up to 21 Mpc. This galaxy forms a member of the NGC 1566 subgroup of the Dorado Group, of which it is dominant and brightest member (although Kilborn and colleagues (2005) listed it as second brightest member of the NGC 1566 group after NGC 1553). The X-ray emission from the group is dominated by the hot gas halo of this galaxy, which extends out to 29 kpc before merging with the background radiation. The galaxy appears to be interacting with smaller members of its subgroup. Radio emissions suggest the disk is asymmetrical and the neutral hydrogen gas shows a mild warp. The morphological classification of NGC 1566 is SAB(rs)bc, which indicates a spiral galaxy with a weak bar structure around the nucleus (SAB), an incomplete ring around the bar (rs), and showing wound arms (bc). The spiral arms are strong and symmetrical. The galactic plane is inclined at an angle of 31°±7° to the line of sight to the Earth and the long axis is oriented along a position angle of 219°±4°. The northwest side of the galaxy is more strongly obscured by dust, suggesting it is the near side. The mass ratio of neutral hydrogen gas to the mass of the stars is 0.29, which is on the high side for a galaxy of this mass. Absolute luminosity is 3.7×1010 L☉, and is calculated to contain 1.4×1010 M☉ of H I. NGC 1566 is an active galaxy with many features of a Seyfert type 1, although the exact type remains uncertain. It is one of the closest and brightest Seyfert galaxies. The mass of the supermassive black hole at the center is estimated at (1.3±0.6)×107 M☉. The proximity of the galaxy, along with strong spiral arms and an active nucleus, have made it the subject of much scientific study in the astronomy community.
Data from the James Webb Space Telescope MAST Portal. Release date: 2022-11-22
Camera: NIRCAM
Color Mapped:
Red-F335M
Green-F300M
Blue-F200W
Processed with FITS Liberator, PixInsight and Photoshop 2023.
This is a rare migrant to New Zealand from Australia. (On his sabbatical, or his OE).
(Please feel free to share this image on Facebook, but no other usage without written permission. Thanks.)
(Egretta intermedia)
Kotu
The gambia / Gâmbia
Other Names:
Basque : koartzatxo ertain
Danish : mellemhejre
Dutch : middelste zilverreiger
English : intermediate egret
Esperanto : intermeza egreto // intermeza ardeo
Finnish : pikkujalohaikara
French : aigrette intermédiaire
German : Mittelreiher
Italian : garzetta intermedia
Latin : Egretta intermedia // Ardea intermedia // Mesophoyx intermedia
Norwegian : duskhegre
Portuguese : garça-branca-intermédia
Spanish : garceta intermedia
Swedish : *mellanhäger??
[Translated by Logos Dictionary www.logosdictionary.org/ ]
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All my photos are now organized into sets by the country where they were taken, by taxonomic order, by family, by species (often with just one photo for the rarer ones), and by the date they were taken.
So, you may find:
- All the photos for this trip Gâmbia (2007, 2008, 2011) (370)
- All the photos for this order PELECANIFORMES (601)
- All the photos for this family Ardeidae (ArdeÃdeos) (466)
- All the photos for this species Ardea intermedia (1)
- All the photos taken this day 2007/07/28 (32)
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