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Variable C – “a typical” LBV in M 33?

Published online by Cambridge University Press:  23 January 2015

Kerstin Weis ,
Roberta M. Humphreys ,
Birgitta Burggraf  and
Dominik J. Bomans
Kerstin Weis
Affiliation:
Astronomical Institute of the Ruhr-University Bochum Bochum, Germany email: kweis@astro.rub.de
Roberta M. Humphreys
Affiliation:
Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, USA
Birgitta Burggraf
Affiliation:
Astronomical Institute of the Ruhr-University Bochum Bochum, Germany email: kweis@astro.rub.de
Dominik J. Bomans
Affiliation:
Astronomical Institute of the Ruhr-University Bochum Bochum, Germany email: kweis@astro.rub.de
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Abstract

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One of the original Hubble-Sandage variables, Variable C in M33 is thought to be a very typical Luminous Blue Variable (LBV). An observational signature of LBVs is a variable brightness which is coupled to a change in spectral type. We compiled a 110 year long light curve of Var C and a set of spectra covering several decades. Analyzing both data sets, various astonishing changes of Var C, some very recent, emerged. Is Var C a typical or an atypical LBV?

Keywords

stars: variables: otherevolutionmass loss
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 148 - 149
Copyright
Copyright © International Astronomical Union 2015 

References

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