Discovery of Two Extreme Young Protostars in Barnard 1

Details Discovery of Two Extreme Young Protostars in Barnard 1 Discovery of Two Extreme Young Protostars in Barnard 1

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999sf99.proc..181h&link_type=abstract

Star Formation 1999, Proceedings of Star Formation 1999, held in Nagoya, Japan, June 21 - 25, 1999, Editor: T. Nakamoto, Nobeyam

Physics

7

Scientific paper

We report the discovery of two previously unknown submillimeter- millimeter dust continuum sources in the dark cloud Barnard 1 (B1). Two sources, designated as B1-bN and B1-bS, are separated by 20'' and are embedded in the dense core of 6 Modot located at 1' east of IRAS 03301+3057. The dust continuum data from 350 μm to 3.5 mm reveal that two sources have similar physical properties; Tdust 18 K, M = 1.6-1.8 Modot, and Lbol = 2.6-3.1 Lodot. Since both sources are detected by the interferometer and have radial density profiles close to ρ(r) propto r-1.5 without inner flattening, they are likely to have formed compact protostellar objects at their centers. The high fraction of Lsubmm to the bolometric luminosities Lbol, Lbol/Lsubmm = 10-11, suggests that both sources are very young Class 0 protostars. Toward two dust continuum sources, the fractional abundance of H13CO+ molecule clearly decreases by a factor of 10, suggesting that the H13CO+ molecule is heavily depleted on dust grains. The depletion of H13CO+ observed in two sources suggests that both sources are in the earlier evolutionary stages than most of the Class 0 sources whose envelopes are traced well with the H13CO+ emission.

Affiliated with

Also associated with

No associations

Rating

Discovery of Two Extreme Young Protostars in Barnard 1 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 Discovery of Two Extreme Young Protostars in Barnard 1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of Two Extreme Young Protostars in Barnard 1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1061401