Thompson, M.A., White, G.J. (2004) Collapse and expansion in the bright-rimmed cloud SFO11NE. Astronomy & Astrophysics, 419 (2). pp. 599-605. ISSN 0004-6361. (doi:10.1051/0004-6361:20035821) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:10920)
The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. | |
Official URL: https://doi.org/10.1051/0004-6361:20035821 |
Abstract
report the results of a search for the double-peaked blue-skewed infall signature in the bright-rimmed cloud core SFO 11NE SMM1. Observations of the optically thick HCO+ and optically thin (HCO+)-C-13 J = 3-2 lines reveal that there is indeed a characteristic double-peaked line profile, but skewed to the red rather than the blue. Modelling of the dust continuum emission and line profiles show that the motions within SFO 11NE SMM1 are consistent with a collapsing central core surrounded by an expanding outer envelope. We show that the collapse is occurring at a similar rate to that expected onto a single solar-mass protostar and is unlikely to represent the large-scale collapse of gas onto the infrared cluster seen at the heart of SFO 11NE SMM1. The outer envelope is expanding at a much greater rate than that expected for a photoevaporated flow from the cloud surface. The modelled expansion is consistent with the bulk cloud re-expansion phase predicted by radiative-driven implosion models of cometary clouds.
Item Type: | Article |
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DOI/Identification number: | 10.1051/0004-6361:20035821 |
Additional information: | 32 E D P SCIENCES 827GD |
Uncontrolled keywords: | stars : formation; ISM : individual object : SFO11NE; ISM : clouds; ISM : dust, extinction; ISM : molecules; submillimeter |
Subjects: | Q Science |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Depositing User: | Maggie Francis |
Date Deposited: | 02 Oct 2008 16:20 UTC |
Last Modified: | 16 Nov 2021 09:49 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/10920 (The current URI for this page, for reference purposes) |
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