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Title: THE WIND OF VARIABLE C IN M33

We discuss the spectrum of Var C in M33 obtained just before the onset of its current brightening and its recent spectra during its present ''eruption'' or optically thick wind stage. These spectra illustrate the typical luminous blue variable (LBV) transition in apparent spectral type or temperature that characterizes the classical LBV or S Dor-type variability. LBVs are known to have slow, dense winds during their maximum phase. Interestingly, Var C had a slow wind even during its hot, quiescent stage in comparison with the normal hot supergiants with similar temperatures. Its outflow or wind speeds also show very little change between these two states.
Authors:
; ;  [1] ; ; ;  [2] ;  [3]
  1. Minnesota Institute for Astrophysics, 116 Church Street SE, University of Minnesota, Minneapolis, MN 55455 (United States)
  2. Astronomical Institute, Ruhr-Universitaet Bochum, D-44801 Bochum (Germany)
  3. Barber Observatory, University of Illinois, Springfield, IL 62703 (United States)
Publication Date:
OSTI Identifier:
22363981
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 782; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COMPARATIVE EVALUATIONS; ERUPTION; STELLAR WINDS; SUPERGIANT STARS; VARIABLE STARS; VELOCITY