Hostname: page-component-7479d7b7d-68ccn Total loading time: 0 Render date: 2024-07-11T22:50:25.695Z Has data issue: false hasContentIssue false
  • English
  • Français

On the magnetic field of OH 231.8+4.2

Published online by Cambridge University Press:  30 August 2012

Marcelo L. Leal-Ferreira ,
Wouter H. T. Vlemmings ,
Philip J. Diamond ,
Athol Kemball ,
Nikta Amiri  and
Jean-François Desmurs
Marcelo L. Leal-Ferreira
Affiliation:
Argelander Institute für Astronomie, Universität Bonn, Germany email: ferreira@astro.uni-bonn.de
Wouter H. T. Vlemmings
Affiliation:
Argelander Institute für Astronomie, Universität Bonn, Germany email: ferreira@astro.uni-bonn.de OSO (Sweden)
Philip J. Diamond
Affiliation:
JBCA (UK)
Athol Kemball
Affiliation:
University of Illinois (USA)
Nikta Amiri
Affiliation:
JIVE (Netherlands) Leiden Observatory (Netherlands)
Jean-François Desmurs
Affiliation:
OAN (Spain)
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

During the transition from an AGB star to a planetary nebula, a large number of low/intermediate initial mass stars loses its spherical symmetry. The process responsible for that change of morphology is, so far, not well understood. The candidates responsible for shaping these objects are (i) a companion to the star (binary/heavy planet) and its tidal forces, (ii) disk interaction and (iii) magnetic fields - or a combination of these. In particular a binary induced magnetic field is a promising option. To study this we observed the polarization of H2O masers in the known binary pre-Planetary Nebula (pPN) OH231.8+4.2. Our results show a magnetic field B|| of ~45 mG is present in the H2O maser region of this pPN.

Keywords

magnetic fieldsmaserspolarizationstars: AGB and post-AGBstars: individual (OH231.8+4.2)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 418 - 419
Copyright
Copyright © International Astronomical Union 2012

References

Choi, Y. K., Brunthaler, A., Menten, K. M., & Reid, M. J. 2011, this conference proceedingsGoogle Scholar
Desmurs, J. F., Alcolea, J., Bujarrabal, V., et al. 2007, A&A, 468, 189 Google Scholar
Etoka, S., Zijlstra, A., Richards, A. M., Matsuura, M., & Lagadec, E. 2009, in: Soonthornthum, B., Komonjinda, S., Cheng, K. S., and Leung, K. C. (eds.), The Eighth Pacific Rim Conference on Stellar Astrophysics: A Tribute to Kam-Ching Leung, (San Francisco: Astronomical Society of the Pacific), 404, 311 Google Scholar
Leal-Ferreira, M. L., Vlemmings, W. H. T., Diamond, P. J., Kemball, A., et al. 2011, A&A, in prep.Google Scholar
Kastner, J. H., Weintraub, D. A., Zuckerman, B., Becklin, E. E., et al. 1992, ApJ, 398, 552 CrossRefGoogle Scholar
Shure, M., Sellgren, K., Jones, T. J., & Klebe, D. 1995, AJ, 109, 721 CrossRefGoogle Scholar
Vlemmings, W. H. T., Diamond, P. J., & Imai, H. 2006, Nature, 440, 58 CrossRefGoogle Scholar