Binaries in globular clusters - Outburst and quiescence spectra of three cataclysmics

Details Binaries in globular clusters - Outburst and quiescence spectra of three cataclysmics Binaries in globular clusters - Outburst and quiescence spectra of three cataclysmics

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99.1858s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, June 1990, p. 1858-1862, 2168. Research supported by NSERC.

Astronomy and Astrophysics

Astronomy

11

Cataclysmic Variables, Globular Clusters, Stellar Spectrophotometry, Absorption Spectra, Balmer Series, Charge Coupled Devices, H Alpha Line, Novae

Scientific paper

As part of an ongoing effort to understand the properties of binaries in globulars, the first spectrum of an old nova in a globular cluster has been obtained. H-alpha emission confirms the presence of the quiescent nova within 1 arcsec of the optical candidate proposed by Shara et al (1986). The Shara et al. candidate is clearly seen to be multiple. The first outburst spectrum of the candidate dwarf nova V4 in M30 has also been obtained. The extremely blue continuum and strong Balmer absorption are typical of an outbursting dwarf nova (DN), and support Margon and Downes' (1983) DN classification (based on a spectrum of V4 in quiescence).

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