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Discovery of polarized 6.7-GHz methanol masers in DR21/W75

Published online by Cambridge University Press:  01 March 2007

L. Harvey-Smith ,
R. Soria-Ruiz ,
A. Duarte-Cabral  and
R. J. Cohen
L. Harvey-Smith
Affiliation:
Joint Institute for VLBI in Europe, Postbus 2, 7990 AA, The Netherlands.
R. Soria-Ruiz
Affiliation:
Joint Institute for VLBI in Europe, Postbus 2, 7990 AA, The Netherlands.
A. Duarte-Cabral
Affiliation:
Joint Institute for VLBI in Europe, Postbus 2, 7990 AA, The Netherlands. University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal.
R. J. Cohen
Affiliation:
Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK. (Deceased)
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Abstract

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We present the first images of 6.7 GHz methanol masers in the DR21 star-forming complex. We have discovered two sites of Class II methanol maser emission; in DR21(OH) and DR21(OH)N. The emission comprises clusters of linearly extended masers which have velocity gradients along their length. There are four maser spots in DR21(OH)N, some of which show a small fraction of linear polarization. The twelve masers in DR21(OH) lie in a linear arrangement stretching approximately 0.7 arcseconds and show no significant linear polarization. We were not able to detect any circular polarization in the masers.

Keywords

masers(ISM:) HII regionsISM: moleculesradio lines: ISMstars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S242: Astrophysical Masers and their Environments , March 2007 , pp. 154 - 155
Copyright
Copyright © International Astronomical Union 2008

References

Curran, R. L. et al. Proceedings of Protostars and Planets V, Reipurth, B., Jewitt, D., and Keil, K. (Eds.), University of Arizona Press, Tucson, 2006, 8160Google Scholar
Fish, V. L., Reid, M. J., Argon, A. L. & Zheng, X-W. 2005, ApJ, 160, 220Google Scholar
Harvey-Smith, L. & Cohen, R. J. 2005, MNRAS, 356, 637CrossRefGoogle Scholar
Harvey-Smith, L. & Cohen, R. J. 2006, MNRAS, 371, 1550CrossRefGoogle Scholar
Lai, S-P., Girart, J. M. & Crutcher, R. M. 2003, ApJ, 598, 392CrossRefGoogle Scholar
Vlemmings, W. H. T., Harvey-Smith, L. & Cohen, R. J. 2006, MNRAS, 371, L26Google Scholar