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Ep. 13, Page 88
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Comic 819 - Ep. 13, Page 88

5th Aug 2011, 1:10 AM in Episode 13 :: Save My Place | Load My Place
Average Rating: 5 (1 votes)

Author Notes:

smbhax 5th Aug 2011, 1:10 AM edit delete
smbhax
Composite image of the 500-light-year-distance lenticular "Cartwheel Galaxy":

image

^ That's blue for ultraviolet (from NASA's 2003 Galaxy Evolution Explorer satellite, or "GALEX"), green for visible light (from Hubble), red for infrared (from Spitzer), and purple for X-ray (from Chandra). For our purposes, the pink areas around the outside of the Cartwheel are the most interesting: those are areas of both high ultraviolet and X-ray emission, likely being generated by material being sucked off binary companion stars by stellar black holes. The blue ultraviolet of the outer wheel as a whole suggests that that intense star-forming region is creating large stars, 5-20 times the mass of the Sun. The orange center is visible and infrared emissions from the second wave of star formation; the green areas are older, less massive stars, whose primary emission is in the visible spectrum.

Comments:

vwyler 5th Aug 2011, 10:35 AM edit delete reply
vwyler
Beautiful, both! :)
smbhax 5th Aug 2011, 4:39 PM edit delete reply
smbhax
:D