Hidden bipolarity in red supergiant winds
Astrophysics
2007-05-23 v1
Abstract
Many observations of late-type M stars show large near-spherical circumstellar envelopes, yet planetary nebulae and supernova remnants are frequently axisymmetric. We present VLBI and MERLIN observations of masers around the red supergiant S Per which show varying degrees of axisymmetry and a dynamically significant magnetic field. There is no evidence for rotation here or in most similar objects. We examine possible origins of the magnetic field.
Keywords
Cite
@article{arxiv.astro-ph/0501028,
title = {Hidden bipolarity in red supergiant winds},
author = {A. M. S. Richards and M. R. W. Masheder and H. J. van Langevelde and R. J. Cohen and M. D. Gray and J. A. Yates and P. J. Diamond and W. H. T. Vlemmings and M. Szymczak and K. Murakawa},
journal= {arXiv preprint arXiv:astro-ph/0501028},
year = {2007}
}
Comments
4 pages. 4 figures. Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Editors: R. Bachiller, F. Colomer, J.-F. Desmurs, P. de Vicente (Observatorio Astronomico Nacional), p. 209-212. Needs evn2004.cls