AAS 204th Meeting, June 2004
Session 62 Protoplanets, Star Formation and Debris Disks
Poster, Wednesday, June 2, 2004, 10:00am-7:00pm, Ballroom

[Previous] | [Session 62] | [Next]

[62.16] Probing Pre-Protostellar Cores with Formaldehyde

K. E. Young, J.-E. Lee, N. J. Evans II (U. of Texas), P. F. Goldsmith (Cornell), S. D. Doty (Denison)

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.

The author(s) of this abstract have provided an email address for comments about the abstract: kaisa@astro.as.utexas.edu

[Previous] | [Session 62] | [Next]

Bulletin of the American Astronomical Society, 36 #2
© YEAR. The American Astronomical Soceity.