An Observed Lack of Substructure in Starless Cores

Details An Observed Lack of Substructure in Starless Cores An Observed Lack of Substructure in Starless Cores

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21741106s&link_type=abstract

American Astronomical Society, AAS Meeting #217, #411.06; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a high resolution (5'') Combined Array for Research in Millimeter-wave Astronomy and Sunyaev-Zeldovich Array survey of the 3 mm continuum emission from 11 of the brightest (at 1.1 mm) starless cores in the Perseus molecular cloud. We detect 2 of the 11 cores, both of which are composed of single structures, and the median 3 sigma upper limit for the non-detections is 0.2 Msun in a 5'' beam. From the non-detection of multiple components in any of the 11 cores, we conclude that starless core mass functions derived from bolometer maps at resolutions range 10''-30'' are unlikely to be significantly biased by the blending of lower mass cores with small separations. We also present molecular line follow-up observations of one starless core and discuss the kinematics and chemistry of this core.

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