Multiple major outbursts from a restless luminous blue variable in NGC 3432

@article{Pastorello2010MultipleMO,
  title={Multiple major outbursts from a restless luminous blue variable in NGC 3432},
  author={A. Pastorello and Maria Teresa Botticella and Carrie Trundle and Stefan Taubenberger and Seppo Mattila and E. Kankare and Nancy Elias-Rosa and Stefano Benetti and G. Duszanowicz and L. Hermansson and John E. Beckman and Filomena Bufano and Morgan Fraser and A. Harutyunyan and Hripsime Navasardyan and Steven J. Smartt and S. Van Dyk and Jorick S. Vink and R. J. Wainscoat Queen's University Belfast and Max-Planck-Institut fur Astrophysik and University of Turku and Stockholm University and Nordic Optical Telescope and Spitzer Science Center and Inaf - Padova and M. Uslenghi Tuorla Observatory and Sandvretens Observatory and Instituto de Astrofisica de Canarias and Consejo Superior de Investigaciones Cientificas - Spain and Fundaci'on Galileo Galilei - Inaf and Armagh Observatory and Large Binocular Telescope Observatory},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2010},
  volume={408},
  pages={181-198}
}
We present new photometric and spectroscopic observations of an unusual luminous blue variable (LBV) in NGC 3432, covering three major outbursts in 2008 October, 2009 April and 2009 November. Previously, this star experienced an outburst also in 2000 (known as SN 2000ch). During outbursts the star reached an absolute magnitude between −12.1 and −12.8. Its spectrum showed H, He i and Fe ii lines with P-Cygni profiles during and soon after the eruptive phases, while only intermediate-width lines… 
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