Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441908w&link_type=abstract
American Astronomical Society, AAS Meeting #214, #419.08; Bulletin of the American Astronomical Society, Vol. 41, p.689
Astronomy and Astrophysics
Astronomy
Scientific paper
Using HERA, a multi-receiver array on the IRAM 30m telescope, we have mapped molecular gas over the entire optical disks (r25) of 40 nearby galaxies (the 'HERACLES' survey). We trace molecular gas via the CO(2-1) emission line, for which HERA yields adequate spatial (11") and velocity (2.6 km/s) resolution and good sensitivity (3sigma 3 Msun/pc2). These data are complemented by neutral hydrogen (HI) maps from the THINGS project and star formation tracers from the Spitzer SINGS and the GALEX Nearby Galaxy Surveys. We measure the relationship between gas and star formation rate, analyze the relationship between disk stability and star formation, and compare the H2-to-HI ratio to local ISM conditions.
Far-infrared emission from HERACLES targets will also be observed at higher resolution and longer wavelengths by the Herschel open time key project KINGFISH, allowing even more detailed studies of the interaction between star formation and the ISM properties.
Bigiel Frank
HERACLES Team
Kennicutt Rob
Leroy Adam
Schruba Andreas
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