Published May 10, 2008
| Submitted + Published
Journal Article
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Enrichment of the dust-to-gas mass ratio in Bondi/Jeans accretion/cloud systems due to unequal changes in dust and gas incoming velocities
- Creators
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Bellan, P. M.
Abstract
The ratio of the Bondi and Jeans lengths is used to develop a cloud-accretion model that describes both an inner Bondi-type regime where gas pressure is balanced by the gravity of a central star and an outer Jeans-type regime where gas pressure is balanced by gas self-gravity. The gas density profile provided by this model makes a smooth transition from a wind-type inner solution to a Bonnor-Ebert-type outer solution. It is shown that high-velocity dust impinging on this cloud will tend to pile up due to having a different velocity profile from gas so that the dust-to-gas ratio is substantially enriched above the 1% interstellar medium (ISM) level.
Additional Information
© 2008. The American Astronomical Society. Received 2006 April 13; accepted 2008 January 23. The author wishes to thank an anonymous referee for thoughtful comments.Attached Files
Published - BELapj08.pdf
Submitted - 0801.4106.pdf
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0801.4106.pdf
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Additional details
- Eprint ID
- 11466
- Resolver ID
- CaltechAUTHORS:BELapj08
- Created
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2008-08-28Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field