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Polarization of the Recombination Line Maser in MWC349

Published online by Cambridge University Press:  24 July 2012

C. Thum ,
D. Morris  and
H. Wiesemeyer
C. Thum
Affiliation:
IRAM, Avenida Divina Pastora, 7, Núcleo Central, E 18012 Granada, Spain email: thum@iram.es
D. Morris
Affiliation:
IRAM, 300 rue de la Piscine, Domaine Universitaire de Grenoble38406 Saint Martin d'Hres, France email: morris@iram.fr
H. Wiesemeyer
Affiliation:
MPIfR, Auf dem Hügel 515300 Bonn, Germany email: wiesemeyer@mpifr.mpi-bonn.de
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Abstract

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We present observations of the circular polarization of the recombination line maser in MWC 349. Six good quality Ha30α spectra were obtained during 2010 – 2011 which show that the Zeeman features are complex, time variable, and usually different for the blue- and red-shifted maser spikes. We propose that the magnetic field, located in the corona of the circumstellar disk, has toroidal and radial components. It is plausibly generated in a disk dynamo.

Keywords

stars: individual (MWC 349)stars: magnetic fieldsstars: windsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 49 - 53
Copyright
Copyright © International Astronomical Union 2012

References

Altenhoff, W. J., Strittmatter, P. A. & Wendker, H. J. 1981, A&A, 93, 48Google Scholar
Altenhoff, W. J., Thum, C., & Wendker, H. J. 1994, A&A, 281, 161Google Scholar
Carter, M., Lazareff, B., Maier, D., et al. 2012, A&A, 538, A89Google Scholar
Martín-Pintado, J., Bachiller, R., Thum, C., & Walmsley, C. M. 1989, A&A, 215, L13Google Scholar
Martín-Pintado, J., Thum, C., Planesas, P., & Báez-Rubio, A., 2011 A&A, 53, L15Google Scholar
Myers, P. C. & Goodman, A. A. 1988, ApJ, 326, L27Google Scholar
Nedoluha, G. E. & Watson, W. D. 1994, ApJ, 423, 394CrossRefGoogle Scholar
Tafoya, D., Gómez, Y., & Rodríguez, L. F. 2004, ApJ, 610, 827Google Scholar
Thum, C., Martín-Pintado, J., & Bachiller, R. 1992, A&A, 256, 507Google Scholar
Thum, C., Martín-Pintado, J., Quirrenbach, A., & Matthews, H. E. 1998, A&A, 333, L63–L66Google Scholar
Thum, C. & Morris, D. 1999 A&A, 344, 923–929Google Scholar
Thum, C., Wiesemeyer, H., Paubert, G., Navarro, S., & Morris, D. 2008, PASP, 120, 777CrossRefGoogle Scholar
Tout, C. A. & Pringle, J. E. 1992, MNRAS, 259, 604Google Scholar
White, R. L. & Becker, R. H. 1985, ApJ, 297, 677CrossRefGoogle Scholar