Coreshine

Pretty patterns of gas and dust.
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Christopher K.
Posts: 4401
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Coreshine

Post by Christopher K. » October 9th, 2010, 11:16 am

A new cosmic phenomenon called "coreshine" has been discovered and was described in the 24 September Science.

Cores are cold dark clouds of gas and dust in space inside which stars are coming alive.

Laurent Pagani and colleagues first observed coreshine in 2009, when they found that starlight was reflecting off the dust molecules of a nearby core in the form of infrared light that the Spitzer space telescope could detect. They had expected the molecules to be so small the sunlight would pass straight through. However, the grains turned out to be ~1 micron instead of 0.1 micron (a typical human hair is about 100 microns).

This could conceivably be used to predict the time frame of planet formation for any new star in the core in question, since the larger grain size means that planets (which form when dust circling young stars sticks together) might take shape more quickly. To determine whether this new phenomenon could actually be a reliable prediction tool, the team examined 110 more cores and found that about half of them exhibit coreshine.

More information at:
http://www.nasa.gov/mission_pages/spitz ... 23_prt.htm

The cloud shown with the article is Lynds 183.

Christopher K.
Posts: 4401
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Coreshine

Post by Christopher K. » May 16th, 2017, 8:53 pm

In the winter of 2012 a paper authored by researchers in France showed interest that the Gum/Vela region of the Milky Way Galaxy had a lower than average number of instances of coreshine.

The paper:
http://www.academia.edu/4524336/Absence ... ela_region

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