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

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 region...

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Bibliographic Details
Main Authors: Lintott, C, Viti, S, Rawlings, J, Williams, D, Hartquist, T, Caselli, P, Zinchenko, I, Myers, P
Format: Journal article
Published: 2004