File:NGC 5044 (Chandra).jpg

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DescriptionNGC 5044 (Chandra).jpg	English: This four-panel of images represents a sample of giant elliptical galaxies observed by Chandra and the Hershel Space Observatory in a study to investigate why these objects have such low levels of star formation. In six galaxies, Herschel detected surprisingly large amounts of cold gas - the fuel for star formation. Chandra revealed that the hot gas in the center of these galaxies appears to be much more disturbed than in the cold gas-free systems. This is a sign that material has been ejected from regions close to the central black hole. The energy from these outbursts helps to prevent the cold gas from cooling sufficiently to form stars. In two other galaxies, jets pushing against the hot gas are creating enormous cavities that are observed in the Chandra images. These jets may be heating the hot, X-ray emitting gas, preventing it from cooling and forming cold gas and stars.
Date	14 February 2014, 10:27:17
Source	http://chandra.si.edu/photo/2014/coldgas/n5044.jpg
Author	NASA/CXC/Stanford Univ/N.Werner et al

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	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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Image title	This four-panel of images represents a sample of giant elliptical galaxies observed by Chandra and the Hershel Space Observatory in a study to investigate why these objects have such low levels of star formation. In six galaxies, Herschel detected surprisingly large amounts of cold gas - the fuel for star formation. Chandra revealed that the hot gas in the center of these galaxies appears to be much more disturbed than in the cold gas-free systems. This is a sign that material has been ejected from regions close to the central black hole. The energy from these outbursts helps to prevent the cold gas from cooling sufficiently to form stars. In two other galaxies, jets pushing against the hot gas are creating enormous cavities that are observed in the Chandra images. These jets may be heating the hot, X-ray emitting gas, preventing it from cooling and forming cold gas and stars.
Source	Chandra X-ray Observatory
Headline	Four elliptical galaxies with very low levels of star formation.
Credit/Provider	X-ray: NASA/CXC/Stanford Univ/N.Werner et al.
Author	Chandra X-ray Observatory Center
Short title	Chandra Helps Explain "Red and Dead Galaxies"
Usage terms	http://chandra.harvard.edu/photo/image_use.html
Date and time of data generation	30 May 2014
Orientation	Normal
Horizontal resolution	0.005952380952381 dpi
Vertical resolution	0.00031111111111111 dpi
File change date and time	(Macintosh)
Exif version	2.21
Color space	sRGB
Date and time of digitizing	10:27, 14 February 2014
Date metadata was last modified	07:35, 3 June 2014
Software used	Adobe Photoshop CS6 (Macintosh)
Unique ID of original document	F20757C3593DB20CA3711A89A4C86BB3
Keywords	NGC 5044
Contact information	cxcpub@cfa.harvard.edu http://chandra.harvard.edu 60 Garden St. Cambridge, MA, 02138 USA 617.496.7941
IIM version	4

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