MIPS Imaging of M31

Details MIPS Imaging of M31 MIPS Imaging of M31

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop..489h&link_type=abstract

Spitzer Proposal ID #489

Astronomy and Astrophysics

Astronomy

Scientific paper

Spitzer will provide a unique and lasting legacy on Local Group galaxies due to its high surface brightness sensitivity and exquisite resolution. This legacy is already in place for M33, the SMC, and the LMC, where multiple MIPS scans maps have been taken or are planned. M31, however, has been observed with only one pass, one which has a gap in coverage near the center of the galaxy at 70um. This current map is not of legacy quality. The gap and patterned artifacts associated with the direction of the scan prevent analysis of, for instance, the diffuse dust components at large distances from the galaxy center. The importance of doing M31 well cannot be overstated: it is the nearest galaxy most like our own and is the most analogous to objects studied at high redshift. Therefore, we propose to map M31 thoroughly and deeply with MIPS to create a high quality mosaic that will have complete coverage of the entire 1 x 5 degree HI disk, providing a lasting Spitzer legacy for the astronomical community for a variety of scientific topics.

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