WRA 751, a candidate for a new luminous blue variable

Details WRA 751, a candidate for a new luminous blue variable WRA 751, a candidate for a new luminous blue variable

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...227l..17h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 227, no. 1, Jan. 1990, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

31

Blue Stars, Early Stars, Stellar Evolution, Stellar Luminosity, Variable Stars, Interstellar Extinction, Spectral Energy Distribution, Stellar Spectra, Stellar Temperature

Scientific paper

Results are presened on spectroscopic observations (carried out with the ESO 1.52-m telescope at La Silla, Chile) and measurements made by the Infrared Astronomical Satellite on the star WRA 751. It is estimated that the T(eff) of this star is 30,000 K and its E(B-V) is 1.8 mag. Comparison with evolutionary tracks of Maeder and Meynet (1980) indicates that WRA 751 is located in the region of luminous blue variables at a lower limit of the initial mass of about 50 solar masses. Its other physical characteristics, such as the light variability, strong Fe II lines, and the extinction-free spectral energy distribution, suggest that WRA 751 is a candidate for a new luminous blue variable.

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