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A MERLIN study of 6 GHz excited OH & 6.7 GHz methanol masers in ON1

Published online by Cambridge University Press:  01 March 2007

James A. Green ,
A. M. S. Richards ,
H. Flood ,
W. H. T. Vlemmings  and
R. J. Cohen
James A. Green*
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
A. M. S. Richards
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
H. Flood
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
W. H. T. Vlemmings
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
R. J. Cohen
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
*
†Email: [email protected]
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Abstract

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MERLIN observations of 6.668-GHz Methanol and 6.035-GHz OH emission from the known massive star-formation region ON1 are presented. Maser components are found to lie at the southern edge of the UCHII with consistent polarization angles across the strongest features. Zeeman splitting of OH shows magnetic field strengths between +0.4 to −5.3 mG and from cross-correlation a tentative methanol magnetic field of −18mG is detected.

Keywords

Star-FormationMasersMagnetic FieldsPolarizationISM: individual (ON1)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S242: Astrophysical Masers and their Environments , March 2007 , pp. 188 - 189
Copyright
Copyright © International Astronomical Union 2008

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