Hubble Sandage variables - A brief evolutionary phase of stars which are very rich in mass

Details Hubble Sandage variables - A brief evolutionary phase of stars which are very rich in mass Hubble Sandage variables - A brief evolutionary phase of stars which are very rich in mass

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981s%26w....20..176s&link_type=abstract

Sterne und Weltraum, vol. 20, May 1981, p. 176-182. In German.

Physics

Magellanic Clouds, Stellar Evolution, Supermassive Stars, Variable Stars, Energy Distribution, Light Curve, Photometry, Stellar Luminosity, Stellar Mass, Stellar Spectra, Ultraviolet Spectra

Scientific paper

The first star of the considered group of HS variables was discovered in 1923. The HS variables are characterized by an extremely large luminosity, a blue color index, a spectral type in the range from B to F, and variations in brightness involving more than one stellar magnitude in time intervals of several years. The light curve of an HS variable is shown in a graph. The star S Doradus in the Large Magellanic Cloud is considered, taking into account photometric variations, spectroscopic properties, the UV spectrum, and aspects of mass loss. The evolution of stars which are rich in mass is discussed, giving attention to the current evolutionary phase of S Dor. It is suggested that HS variables may possibly represent a brief, but very important intermediary stage in a late phase of the evolution of stars which are very rich in mass.

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