Swift's UV portrait of the Andromeda Galaxy
NASA's Swift satellite has acquired the highest-resolution view of the neighboring spiral galaxy M31. Also known as the Andromeda Galaxy, M31 is the largest and closest such galaxy to our own. It's more than 220,000 light-years across and lies 2.5 million light-years away in the constellation Andromeda. Between May 25 and July 26, 2008, Swift's Ultraviolet/Optical Telescope (UVOT) acquired 330 images of M31 at wavelengths of 192.8, 224.6, and 260 nanometers. The images represent a total exposure time of 24 hours. Some 20,000 ultraviolet sources are visible in the image, including M32, a small galaxy in orbit around M31. Dense clusters of hot, young, blue stars sparkle in the disk beyond the galaxy's smooth, redder central bulge. Star clusters are especially plentiful along a ring about 150,000 light-years across.
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Swift image: NASA/Swift/Stefan Immler (GSFC) and Erin Grand (UMCP) Optical image: Bill Schoening, Vanessa Harvey/REU program/NOAO/AURA/NSF
MissionsThis visualization is related to the following missions:
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TapesThis visualization originally appeared on the following tapes:
A Swift Tour of M31
Saturday, August 15, 2009 at 4:00AM
Datasets used in this visualization
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