Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..343..406b&link_type=abstract
Astronomical Polarimetry: Current Status and Future Directions ASP Conference Series, Vol. 343, Proceedings of the Conference he
Astronomy and Astrophysics
Astronomy
4
Scientific paper
Over the past 15+ years, we have used the Halfwave Polarimeter (HPOL) at the University of Wisconsin's Pine Bluff Observatory (PBO) to monitor the spectropolarimetric behavior of a large number of hot stars of various types. While the HPOL observing program has included all types of stars, our particular interest has been in the hot stars; our primary focus has been on the rapidly-rotating Be stars, with their circumstellar disks, but HPOL also has collected data on Wolf-Rayet stars, OB supergiants, B[e] stars, and pre-main-sequence Herbig Ae/Be (HAeBe) stars. In many, if not most, of these stars, spectropolarimetric variability on many different time scales is clearly present. We present samples of our data set, and discuss the diagnostics of the circumstellar envelopes that become available with such a long-term data set.
Bjorkman Karen S.
Meade Marilyn R.
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