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These four dwarf galaxies waited billions of years to come together, setting off a fireworks show as thousands of new star clusters come to life. The distorted galaxies are quickly producing massive, hot, young stars that are pumping out ultraviolet radiation, heating up surrounding gas clouds, and causing them to glow. Such encounters between dwarf galaxies are normally seen billions of light-years away and therefore occurred billions of years ago. But these galaxies, members of Hickson Compact Group 31, are relatively nearby, only 166 million light-years away. In this image, taken by the NASA/ESA Hubble Space Telescope, the bright, distorted object at middle, left, is actually two colliding dwarf galaxies. Myriad star clusters have formed in the streamers of debris pulled from the galaxies and at the site of their head-on collision. The cigar-shaped object above the galaxy duo is another member of the group. A bridge of star clusters connects the trio. A long rope of bright star clusters points to the fourth member of the group, at lower right. The bright object in the center is a foreground star. Astronomers used Hubble's Advanced Camera for Surveys to resolve the youngest and brightest of star clusters, which allowed them to calculate the clusters' ages, map the star-formation history, and determine that the galaxies are starting the final stages of galaxy assembly. Hubble reveals that the brightest clusters, hefty groups each holding at least 100,000 stars, are less than 10 million years old. Astronomers say the interacting galaxies will form a large elliptical galaxy in another billion years. The Advanced Camera for Surveys data were taken on 8 August 2006. The principal investigator was Jane Charlton of Pennsylvania State University, University Park (USA).
Title : Gyratory Compactor
Creator (Photographer) : Unknown
Publisher : Graphic Services
Place of Publication : College Station, Texas
Year (Coverage) : 1966
Document Type : Image
Format : Photographic negative
Dimensions : 4 x 5 inches
Digitization Date : September2009
Description : Unknown
Note : Brazos County, Texas
Collection : Texas A&M University Archives
Resource Identifier : Graphic Services Photos, Box 35, File 35-861
Institution : Texas A&M University, College Station, Texas
Repository : Cushing Memorial Library and Archives
Contact Information : Email: cushing-library@tamu.edu Phone: 979-845-1951
Copyright : It is the users responsibility to secure permission from the copyright holders for publication of any materials. Permission must be obtained in writing prior to publication. Please contact the Cushing Memorial Library for further information
read the iliveisl blog to see what we are doing in OpenSim with our virtual environmental science field trip stuff over at Enclave Harbour
Session I: Setting the Agenda (24 June 2010), Marriott Marquis Hotel, New York
(Photo: UN Global Compact/Michael Dames)
The 1992 Japanese Compact Disc of David Lynch's "Twin Peaks: Fire Walk With Me" Soundtrack. See: twinpeaksblog.com/2024/12/25/twin-peaks-fire-walk-with-me...