Lintott, C.J.;
Rawlings, J.M.C.;
Williams, D.A.;
Hartquist, T.W.;
Caselli, P.;
Zinchenko, I.;
Myers, P.;
(2005)
Molecular abundance ratios as a tracer of accelerated collapse in regions of high-mass star formation.
Astrophysical Journal
, 620
(2)
pp. 795-799.
10.1086/427164.
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Abstract
Recent observations suggest that the behaviour of tracer species such as N_2H+ and CS is significantly different in regions of high and low mass star formation. In the latter, N_2H+ 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 suggest these results provide a potential explanation of the observations, and make predictions for the behaviour of other species.
| Type: | Article |
|---|---|
| Title: | Molecular abundance ratios as a tracer of accelerated collapse in regions of high-mass star formation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1086/427164 |
| Publisher version: | http://dx.doi.org/10.1086/427164 |
| Language: | English |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9937 |
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