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

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

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007iaus..242..154h&link_type=abstract

Astrophysical Masers and their Environments, Proceedings of the International Astronomical Union, IAU Symposium, Volume 242, p.

Astronomy and Astrophysics

Astrophysics

Masers, (Ism:) Hii Regions, Ism: Molecules, Radio Lines: Ism, Stars: Formation

Scientific paper

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.

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