Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812909h&link_type=abstract
American Astronomical Society, AAS Meeting #218, #129.09; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
The Serpens Molecular Cloud, at a distance of 230pc, is star forming region containing 35 dense protostellar and starless cores, as identified in the c2d 1.1mm continuum survey (Enoch et al. 2007, ApJ, 666, 982). These cores are in the process of forming low and intermediate-mass stars, so they provide a unique test bed to study gas phase evolution in molecular clouds. Using the Arizona 12-m radio telescope, we observed the J=1-0 rotational transition of N2H+ in order to calculate column densities in the cloud. We mapped N2H+ abundance in the vicinity of three major star forming filaments, previously identified in the 1.1mm survey, and found N2H+ in protostellar cores is enhanced by three times compared to that of starless cores. Comparison of N2H+ distribution with that of 12CO and 13CO found by Bieging et al. (in prep) will shed further light on gas phase evolution within Serpens. This research is supported by the Arizona NASA Space Grant Consortium.
Hardegree-Ullman Kevin
Shirley Yancy L.
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