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Dusty Galaxies Shine Across The Universe In New Herschel Survey

Tuesday, March 18, 2014 7:23
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A portion of a collage of galaxies included in the Herschel Reference Survey, in false color to show different dust temperatures. (Blue is colder, and red is warmer). Credit: ESA/Herschel/HRS-SAG2 and HeViCS Key Programmes/L. Cortese (Swinburne University)

A portion of a collage of galaxies included in the Herschel Reference Survey, in false color to show different dust temperatures. (Blue is colder, and red is warmer). Credit: ESA/Herschel/HRS-SAG2 and HeViCS Key Programmes/L. Cortese (Swinburne University)

While dust is easy to ignore in small quantities (says the writer looking at her desk), across vast reaches of space this substance plays an important role. Stick enough grains together, the theory goes, and you’ll start to form rocks and eventually planets. On a galaxy-size scale, dust may even effect how the galaxy evolves.

A new survey of 323 galaxies reveals that dust is not only affected by the kinds of stars in the vicinity, but also what the galaxy is made of.

(…)
Read the rest of Dusty Galaxies Shine Across The Universe In New Herschel Survey (399 words)


© Elizabeth Howell for Universe Today, 2014. |
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Post tags: dust, herschel space telescope, Sloan Digital Sky Survey

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Source: http://www.universetoday.com/110416/dusty-galaxies-shine-across-the-universe-in-new-herschel-survey/

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