Periodic methanol masers in G9.62+0.20E

A number of mechanisms for understanding the periodic class II methanol masers associated with some high-mass star forming regions have been proposed in the past. Two recent proposals by Parfenov & Sobolev (2014, MNRAS, 444, 620) and Sanna et al. (2015, ApJ, 804, L2) have been presented in order...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2016-04, Vol.588, p.A47
Main Authors: van der Walt, D. J., Maswanganye, J. P., Etoka, S., Goedhart, S., van den Heever, S. P.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
ISM: molecules
Light curve
Masers
Methyl alcohol
Proposals
Star formation
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Summary:A number of mechanisms for understanding the periodic class II methanol masers associated with some high-mass star forming regions have been proposed in the past. Two recent proposals by Parfenov & Sobolev (2014, MNRAS, 444, 620) and Sanna et al. (2015, ApJ, 804, L2) have been presented in order to explain the periodic masers in sources with light curves similar to the methanol masers in G9.62+0.20E. We evaluate to what extent the proposals and models presented by these authors can explain the light curve of the methanol masers in G9.62+0.20E. It is argued that neither of the proposed mechanisms can reproduce the light curves of the methanol masers in G9.62+0.20E.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201527611