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Molecular abundance ratios as a tracer of accelerated collapse in regions of high-mass star formation

Abstract:

Recent observations suggest that the behavior of tracer species such as N2H+ and CS is significantly different in regions of high- and low-mass star formation. In the latter, N2H+ is a good tracer of mass, while CS is not. Observations show the reverse to be true in high-mass star formation regions. We use a computational chemical model to show that the abundances of these and other species may be significantly altered by a period of accelerated collapse in high-mass star-forming regions. We ...

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Publisher copy:
10.1086/427164

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Publisher:
Institute of Physics Publishing
Journal:
Astrophysical Journal
Volume:
620
Issue:
2 I
Pages:
795-799
Publication date:
2005-02-20
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
URN:
uuid:e03a93bb-fecc-42ad-928c-5c776072f353
Source identifiers:
159828
Local pid:
pubs:159828
Language:
English
Keywords:

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