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Astronomy Picture of the Day
Posted By Editor On January 16, 2012 @ 1:11 pm In Photo Essays | Comments Disabled
Cosmic dust clouds ripple across this infrared portrait of our Milky Way’s satellite galaxy, the Large Magellanic Cloud. In fact, the remarkable composite image from the Herschel Space Observatory and the Spitzer Space Telescope show that dust clouds fill this neighboring dwarf galaxy, much like dust along the plane of the Milky Way itself. The dust temperatures tend to trace star forming activity.
Explanation: Cosmic dust clouds ripple across this infrared portrait  of our Milky Way’s satellite galaxy , the Large Magellanic Cloud. In fact, the remarkable composite image from the Herschel Space Observatory  and the Spitzer Space Telescope  show that dust clouds fill this neighboring dwarf galaxy, much like dust along the plane  of the Milky Way itself. The dust temperatures  tend to trace star forming activity. Spitzer data in blue hues indicate warm dust heated by young stars. Herschel’s instruments contributed the image data shown in red and green, revealing dust emission from cooler and intermediate regions where star formation is just beginning or has stopped. Dominated by dust emission, the Large Magellanic Cloud’s infrared appearance is different from views in optical images . But this galaxy’s well-known Tarantula Nebula  still stands out, easily seen here as the brightest region to the left of center. A mere 160,000 light-years distant, the Large Cloud of Magellan  is about 30,000 light-years across.
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URL to article: http://www.berthoudrecorder.com/2012/01/16/astronomy-picture-of-the-day-103/
URLs in this post:
 Image: http://www.berthoudrecorder.com/wp-content/uploads/2012/01/PIA15254_LMC900c1.jpg
 ESA: http://herschel.esac.esa.int/
 NASA: http://www.nasa.gov/
 JPL-Caltech: http://www.spitzer.caltech.edu/
 this infrared portrait: http://www.spitzer.caltech.edu/images/4872-ssc2012-01a-Dusty-Space-Cloud
 satellite galaxy: http://www.atlasoftheuniverse.com/sattelit.html
 Herschel Space Observatory: http://herschel.esac.esa.int/overview.shtml
 Spitzer Space Telescope: http://www.spitzer.caltech.edu/mission
 dust along the plane: http://apod.nasa.gov/apod/ap110902.html
 temperatures: http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ir_tutorial/index.html
 views in optical images: http://apod.nasa.gov/apod/ap110426.html
 Tarantula Nebula: http://apod.nasa.gov/apod/ap110111.html
 the Large Cloud of Magellan: http://apod.nasa.gov/apod/ap081219.html
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