M5 V101 - A close binary system in a globular cluster

Details M5 V101 - A close binary system in a globular cluster M5 V101 - A close binary system in a globular cluster

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247l..89m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 247, July 15, 1981, p. L89-L92. Research supported by the California

Astronomy and Astrophysics

Astrophysics

65

Binary Stars, Dwarf Stars, Globular Clusters, Novae, Stellar Evolution, Stellar Spectrophotometry, Balmer Series, H Alpha Line, Helium

Scientific paper

Spectrophotometric and photographic observations of the large amplitude variable V101 in the globular cluster M5 show it to have the characteristics of a dwarf nova. In particular, a spectrum obtained with the Hale 5 m reflector of the object in quiescence (V approximately equal to 20) shows strong, broad Balmer and He I emission. It is suggested that M5 V101 is the strongest case for the existence of close binary systems in globular clusters.

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