A Complete CO 2-1 Map of M51 with HERA

  • Carsten Kramer
  • Marc Hitschfeld
  • Karl F. Schuster
  • Santiago Garcia-Burillo
  • Bhaswati Mookerjea
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

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 11corresponding to 450 kpc using HERA at the IRAM-30m telescope. In [1] 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.


Star Formation Molecular Cloud Star Formation Rate External Galaxy Andromeda Galaxy 
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  1. 1.
    K. Schuster, C. Kramer, M. Hitschfeld, S. Garcia-Burillo, B. Mookerjea: accepted for publication in A&A (2006)Google Scholar
  2. 2.
    A.H. Rots, P.C. Crane, A. Bosma, E. Athanassoula, J.M. van der Hulst: ApJ, 100,387 (1990)Google Scholar
  3. 3.
    I. Patrikeev, A. Fletcher, R. Stepanov, R. Beck, E.M. Berkhuijsen, P. Frick, C. Horellou: A&A in press (2006)Google Scholar
  4. 4.
    R.C. Kennicutt: ApJ, 498, 541 (1998)CrossRefADSGoogle Scholar
  5. 5.
    R.J. Rand, S.R. Kulkarni: ApJL, 349, L43 (1990)CrossRefADSGoogle Scholar
  6. 6.
    S. Garcia-Burillo, F. Combes, M. Gerin: A&A, 274, 148 (1993)ADSGoogle Scholar
  7. 7.
    J. Stutzki, R. Guesten: ApJ, 356, 513 (1990)CrossRefADSGoogle Scholar
  8. 8.
    C. Kramer, J. Stutzki, R. Roehrig, U. Corneliussen: A&A, 329, 249 (1998)ADSGoogle Scholar
  9. 9.
    C.D. Wilson, N. Scoville, S.C. Madden, V. Charmandaris: ApJ, 599, 1049 (2003)CrossRefADSGoogle Scholar
  10. 10.
    M. Hitschfeld, C. Kramer, K. Schuster, S. Garcia-Burillo, J. Stutzki, B. Mookerjea: A&A, in prep. (2007)Google Scholar
  11. 11.
    G. Engargiola, R.L. Plambeck, E. Rosolowsky, L. Blitz: ApJS, 149, 343 (2003)CrossRefADSGoogle Scholar
  12. 12.
    S. Muller: “Molecular gas in the Andromeda Galaxy: properties of the molecular clouds”, this conferenceGoogle Scholar
  13. 13.
    Y. Fukui, N. Mizuno, R. Yamaguchi, A. Mizuno, T. Onishi: PASP, 53, 41 (2001)Google Scholar
  14. 14.
    A. Heithausen, F. Bensch, J. Stutzki, E. Falgarone, J.F. Panis: A&A, 331, 65 (1998)ADSGoogle Scholar
  15. 15.
    R. Simon, J.M. Jackson, D.P. Clemens, T.M. Bania, M.H. Heyer: ApJ, 551, 747 (2001)CrossRefADSGoogle Scholar
  16. 16.
    M.H. Heyer, J.M. Carpenter, R.L. Snell: ApJ, 551, 851 (2001)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Carsten Kramer
    • 1
  • Marc Hitschfeld
    • 1
  • Karl F. Schuster
    • 2
  • Santiago Garcia-Burillo
    • 3
  • Bhaswati Mookerjea
    • 4
  1. 1.KOSMA, I. Physikalisches InstitutUniversität zu KölnGermany
  2. 2.IRAM, 300 Rue de la PiscineFrance
  3. 3.Observatorio Astronómico Nacional-OANObservatorio de MadridSpain
  4. 4.Department of AstronomyUniversity of MarylandCollege ParkUSA

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