Probing Pre-Protostellar Cores with Formaldehyde

Details Probing Pre-Protostellar Cores with Formaldehyde Probing Pre-Protostellar Cores with Formaldehyde

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.6216y&link_type=abstract

American Astronomical Society Meeting 204, #62.16; Bulletin of the American Astronomical Society, Vol. 36, p.775

Astronomy and Astrophysics

Astronomy

Scientific paper

We present maps of the 6 cm and 1.3 mm transitions of H2CO toward three cold, dense pre-protostellar cores: L1498, L1512, and L1544. The 6 cm transition is uniquely suited to probe high density gas at low temperature. Our models indicate that H2CO is depleted in the interiors of PPCs. Depletion significantly affects how H2CO probes the earliest stages of star formation. Multi-stage, self-consistent models, including gas--dust energetics, of both H2CO transitions are presented, and the implications of the results discussed. This work was supported by the National Aeronautics and Space Administration, the National Science Foundation, and the Research Corporation.

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