Ice mantles in Barnard 5 IRS1

Details Ice mantles in Barnard 5 IRS1 Ice mantles in Barnard 5 IRS1

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.245..161c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 245, July 1, 1990, p. 161-163. Research supported by SE

Astronomy and Astrophysics

Astronomy

14

H Ii Regions, Ice, Infrared Sources (Astronomy), Molecular Clouds, Astronomical Models, Interstellar Chemistry, Interstellar Matter, Star Formation

Scientific paper

The detection of water-ice mantles towards the embedded source IRS1 in the dark cloud Barnard 5 is reported. It is shown that the observed column density of ice in the clump, N(H2O) = 2 x 10 to the 18th/sq cm, constrains theoretical models of the dynamics in the star-forming region. Simple estimates suggest that the time-scale for clump formation and dissipation is longer, perhaps by an order of magnitude, than the free-fall time of about 400,000 yr.

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