Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724611s&link_type=abstract
American Astronomical Society, AAS Meeting #217, #246.11; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
The nearby spiral galaxy M51 is a prime target for studying the properties of molecular gas in the environment of spiral arms. Our recent analysis of multi-transition data from the OVRO millimeter interferometer of two selected regions of its prominent gas spiral arms shows that Giant Molecular Clouds (GMCs) residing in the spiral arms are very similar to their cousins found in the Milky Way. In addition, the conversion factor from CO line velocity to molecular gas mass is very similar to values derived for Galactic GMCs.
The recently finished PdBI Arcsecond Whirlpool Survey (PAWS) imaged the GMCs population of Giant Molecular Clouds (GMCs) in the central 8 kpc disk of M51 at an unprecedented resolution of 45pc using the PdBI and 30m instruments. First results from this IRAM Large Program regarding the properties of GMCs, their evolution and relation to star forming sites within M51's impressive spiral arms will be presented.
Aalto Samuli
Colombo Diego
Dumas Gaelle
Garcia-Burillo Santiago
Hughes Arthur
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