Bright long-period variables in the direction of the Magellanic Clouds - Foreground stars or supergiants?

Details Bright long-period variables in the direction of the Magellanic Clouds - Foreground stars or supergiants? Bright long-period variables in the direction of the Magellanic Clouds - Foreground stars or supergiants?

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..681w&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Aug. 1985, p. 681-683.

Astronomy and Astrophysics

Astronomy

11

Infrared Photometry, Magellanic Clouds, Radial Velocity, Stellar Luminosity, Supergiant Stars, Variable Stars, Giant Stars, Milky Way Galaxy, Mira Variables, Stellar Cores, Stellar Mass, Stellar Spectrophotometry

Scientific paper

Radial velocities and infrared photometry have been obtained for seven bright long-period variables in the direction of the Magellanic Clouds. Five stars with periods shorter than 250 days were found to be Cloud members. They are probably core-helium burning supergiants of about 15 times the solar mass; there is also a possibility that they are overtone pulsators on the upper asymptotic branch with masses in the 7-9 solar mass range. It had previously been suggested that the bright short-period (100-250 days) LPVs might be foreground Mira variables of low mass in the Galactic halo. The supergiant long-period variables in the Magellanic Clouds exhibit a distinct period-luminosity relation which should be useful for the purpose of extra-Galactic distance determination.

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