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Datoteka:Ssc2004-07a.jpg

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Opis
English: A Natal Microcosm
  • In the quest to better understand the birth of stars and the formation of new worlds, astronomers have used NASA's Spitzer Space Telescope to examine the massive stars contained in a cloudy region called Sharpless 140. This cloud is a fascinating microcosm of a star-forming region since it exhibits, within a relatively small area, all of the classic manifestations of stellar birth.
  • Sharpless 140 lies almost 3000 light-years from Earth in the constellation Cepheus. At its heart is a cluster of three deeply embedded young stars, which are each several thousand times brighter than the Sun. Though they are strikingly visible in this image from Spitzer's infrared array camera, they are completely obscured in visible light, buried within the core of the surrounding dust cloud.
  • The extreme youth of at least one of these stars is indicated by the presence of a stream of gas moving at high velocities. Such outflows are signatures of the processes surrounding a star that is still gobbling up material as part of its formation.
  • The bright red bowl, or arc, seen in this image traces the outer surface of the dense dust cloud encasing the young stars. This arc is made up primarily of organic compounds called polycyclic aromatic hydrocarbons, which glow on the surface of the cloud. Ultraviolet light from a nearby bright star outside of the image is "eating away" at these molecules. Eventually, this light will destroy the dust envelope and the masked young stars will emerge.
  • This false-color image was taken on Oct. 11, 2003 and is composed of photographs obtained at four wavelengths: 3.6 microns (blue), 4.5 microns (green), 5.8 microns (orange) and 8 microns (red).
Datum
Izvor http://www.spitzer.caltech.edu/images/1160-ssc2004-07a-A-Natal-Microcosm
Autor NASA/JPL-Caltech/G. Melnick (Harvard-Smithsonian CfA)
Dopuštenje
(Naknadno korištenje ove datoteke)		 http://www.spitzer.caltech.edu/Media/mediaimages/copyright.shtml

Licenciranje

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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Datum/vrijemeSmanjeni pregledDimenzijeKorisnikKomentar
trenutno21:14, 23 juli 2019Smanjeni pregled verzije na dan 21:14, 23 juli 20191.456 × 738 (714 KB)Ras67cropped from the uncompressed original TIFF, Adobe 1998 RGB profile preserved
01:32, 6 juli 2007Smanjeni pregled verzije na dan 01:32, 6 juli 20071.500 × 975 (845 KB)AnzibanonziIn the quest to better understand the birth of stars and the formation of new worlds, astronomers have used NASA's Spitzer Space Telescope to examine the massive stars contained in a cloudy region called Sharpless 140. This cloud is a fascinating microcos

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