A Complete CO 2-1 Map of M51 with HERA
The nearby, almost face-on, and interacting galaxy M51 offers an excellent opportunity to study the distribution of molecular gas and the mechanisms governing the star formation rate. We have created a complete map (Fig. 1) of M51 in 12CO 2–1 at a resolution of 11”corresponding to 450 kpc using HERA at the IRAM-30m telescope. In  we have combined these data with maps of HI and the radio-continuum to study the star formation efficiency, the local Schmidt law, and Toomre stability of the disk in radial averages out to radii of 12 kpc. Here, we also discuss the distribution of giant molecular associations and its mass spectrum, in comparison with similar studies in the literature.
KeywordsStar Formation Molecular Cloud Star Formation Rate External Galaxy Andromeda Galaxy
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- 1.K. Schuster, C. Kramer, M. Hitschfeld, S. Garcia-Burillo, B. Mookerjea: accepted for publication in A&A (2006)Google Scholar
- 2.A.H. Rots, P.C. Crane, A. Bosma, E. Athanassoula, J.M. van der Hulst: ApJ, 100,387 (1990)Google Scholar
- 3.I. Patrikeev, A. Fletcher, R. Stepanov, R. Beck, E.M. Berkhuijsen, P. Frick, C. Horellou: A&A in press (2006)Google Scholar
- 10.M. Hitschfeld, C. Kramer, K. Schuster, S. Garcia-Burillo, J. Stutzki, B. Mookerjea: A&A, in prep. (2007)Google Scholar
- 12.S. Muller: “Molecular gas in the Andromeda Galaxy: properties of the molecular clouds”, this conferenceGoogle Scholar
- 13.Y. Fukui, N. Mizuno, R. Yamaguchi, A. Mizuno, T. Onishi: PASP, 53, 41 (2001)Google Scholar