BIMA Survey of GMCs in the Optical Disk of M 33

Details BIMA Survey of GMCs in the Optical Disk of M 33 BIMA Survey of GMCs in the Optical Disk of M 33

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.2802e&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #28.02; Bulletin of the American Astronomical Society, Vol. 32, p.1444

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of an unbiased interferometric survey of the whole optical disk of M 33 in CO J = 1 -> 0 made at 13'' angular resolution with the Berkeley-Illinois-Maryland Association Array. We find molecular clouds down to the mass of Taurus-Auriga (0.5 x 105 M&sun; ). We present the CO luminosity function, rotation profile, and cloud-cloud velocity dispersion for molecular clouds isolated in our mosaic map, which covers the region R < 7 kpc. Our beam is well matched to the linear size of a Galactic-type GMC, neither resolving out nor seriously diluting the molecular emission. Therefore, our study should yield accurate flux and velocity dispersion information for these sources, which are analyzed statistically in relation to stellar radial and spiral structure. Our survey requires nearly 1000 telescope pointings which generate a grid of fields covering almost half a square degree. The noise level is 0.3 K in a 2 km/sec velocity channel. This work was supported in part by NSF grant AST 99-81308.

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