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Disk-loss and disk-renewal phases in classical Be stars – II. Detailed analysis of spectropolarimetric data

  • Zachary H. Draper (a1), John P. Wisniewski (a1), Karen S. Bjorkman (a2), Jon E. Bjorkman (a2), Xavier Haubois (a3), Alex C. Carciofi (a3) and Marilyn R. Meade (a4)
  • DOI: http://dx.doi.org/10.1017/S1743921311010854
  • Published online: 12 July 2011
Abstract
Abstract

In Wisniewski et al. (2010), paper I, we analyzed 15 years of spectroscopic and spectropolarimetric data from the Ritter and Pine Bluff Observatories of 2 Be stars, 60 Cygni and π Aquarii, when a transition from Be to B star occurred. Here we analyze the intrinsic polarization, where we observe loop-like structures caused by the rise and fall of the polarization Balmer Jump and continuum V-band polarization being mismatched temporaly with polarimetric outbursts. We also see polarization angle deviations from the mean, reported in paper I, which may be indicative of warps in the disk, blobs injected at an inclined orbit, or spiral density waves. We show our ongoing efforts to model time dependent behavior of the disk to constrain the phenomena, using 3D Monte Carlo radiative transfer codes.

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Linked references
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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

A. C. Carciofi & J. E. Bjorkman 2006, ApJ, 639, 1081

W. J. de Wit , H. J. G. L. M. Lamers , J. B. Marquette , & J. P. Beaulieu 2006, A&A, 456, 1027

J. P. Wisniewski , Z. H. Draper , K. S. Bjorkman , M. R. Meade 2010, ApJ, 709, 1306 (paper I)

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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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