Wolf-Rayet stars in the LMC - How faint are the faintest

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Magellanic Clouds, Stellar Luminosity, Stellar Spectrophotometry, Wolf-Rayet Stars, Late Stars, Stellar Color, Stellar Magnitude, Stellar Spectra, Wavelengths

Scientific paper

The authors have obtained absolute spectrophotometry of many of the faint W-R stars discovered in the LMC by Azzopardi and Breysacher. These stars are all of early WN type, but are considerably fainter than what is usually supposed for Population I W-R stars, with Mv > -3. Despite the similarity in their spectral appearance, the apparently single early WN stars in the LMC span a range of 3 mag in Mv, similar to the range seen for the single late WN stars. Thus the spectrum of a WN star cannot be used to infer its absolute magnitude.

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