Rubin-152 - A massive star on the Galactic fringe

Details Rubin-152 - A massive star on the Galactic fringe Rubin-152 - A massive star on the Galactic fringe

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85..853c&link_type=abstract

Astronomical Journal, vol. 85, July 1980, p. 853-857. Research supported by the City University of New York.

Other

12

Main Sequence Stars, O Stars, Stellar Evolution, Stellar Spectra, Supermassive Stars, Circular Orbits, Galactic Nuclei, Radial Velocity, Stellar Gravitation, Stellar Luminosity, Stellar Mass, Stellar Temperature

Scientific paper

Rubin-152 is spectroscopically identical with a type O4-5 main-sequence star, and the standard luminosity calibration places it at the unexpected distance of 50 kpc from the Galactic center. Although its radial velocity is inconsistent with a circular orbit, a highly eccentric one cannot be excluded. On the other hand, the data reported here are also consistent with the hypothesis that R-152 is in an advanced stage of evolution, and that it is a nearby, low-mass, low-luminosity object which by perverse coincidence exhibits the effective temperature and surface gravity of a very massive star.

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