File:Cepheus B.jpg

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English: This composite image of Cepheus B combines data from the Chandra X-ray Observatory and the Spitzer Space Telescope. A molecular cloud is a region containing cool interstellar gas and dust left over from the formation of the galaxy and mostly contains molecular hydrogen. The Spitzer data, in red, green and blue show the molecular cloud (in the bottom part of the image) plus young stars in and around Cepheus B, and the Chandra data in violet show the young stars in the field. The Chandra observations allowed the astronomers to pick out young stars within and near Cepheus B, identified by their strong X-ray emission. The Spitzer data showed whether the young stars have a so-called "protoplanetary" disk around them. Such disks only exist in very young systems where planets are still forming, so their presence is an indication of the age of a star system.
Date
Source NASA Image of the Day
Author X-ray: NASA/CXC/PSU/K. Getman et al.; IRL NASA/JPL-Caltech/CfA/J. Wang et al.

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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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13 August 2009

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current15:28, 13 August 2009Thumbnail for version as of 15:28, 13 August 20091,432 × 1,074 (95 KB)Originalwana{{Information |Description={{en|1=This composite image of Cepheus B combines data from the Chandra X-ray Observatory and the Spitzer Space Telescope. A molecular cloud is a region containing cool interstellar gas and dust left over from the formation of t

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