A Search For Dense Gas in Quiescent BOK Globules

Details A Search For Dense Gas in Quiescent BOK Globules A Search For Dense Gas in Quiescent BOK Globules

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.3003k&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #30.03; Bulletin of the American Astronomical Society, Vol. 26, p.905

Astronomy and Astrophysics

Astronomy

Scientific paper

This study demonstrates a crucial difference between quiescent Bok globules and dark cloud cores. Seventeen small, quiescent Bok globules were probed for the molecular lines of NH_3 (J,K=1,1) and HC_3N (J=4->3) using the Haystack telescope. The sources have 3sigma integrated line intensity upper limits generally less than 0.1 K-km s(-1) . In terms of the reference source, TMC-2, this is less than about 10% of the brightness of the NH_3 (1,1) line, and less than about 30% of brightness of the HC_3N (4->3) line. A simple statistical equilibrium analysis indicates that chemical abundances of NH_3 and HC_3N in these globules are diminished by factors of 10 and 6, respectively, relative to dark cloud cores. Second, for plausible globule core sizes, densities are about 6 times smaller compared to those of dark cloud cores.

Affiliated with

Also associated with

No associations

Rating

A Search For Dense Gas in Quiescent BOK Globules does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Search For Dense Gas in Quiescent BOK Globules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search For Dense Gas in Quiescent BOK Globules will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-882437