Observations of the Polar ST Leonis Minoris during an Extreme Low State: Identification of the Secondary Star

Details Observations of the Polar ST Leonis Minoris during an Extreme Low State: Identification of the Secondary Star Observations of the Polar ST Leonis Minoris during an Extreme Low State: Identification of the Secondary Star

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110.1007c&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 751, pp. 1007-1011.

Astronomy and Astrophysics

Astronomy

3

Stars: Binaries: Close, Stars: Novae, Cataclysmic Variables, Stars: Individual: Constellation Name: St Leonis Minoris

Scientific paper

We present near-infrared (1.85-2.47 μm) and optical (4300-5800 Å) spectroscopic observations of the polar ST Leonis Minoris (ST LMi) in an extreme low state. The near-infrared spectrum, showing no emission lines whatsoever, is produced solely by the secondary star. We have fitted the spectrum with a series of stellar atmosphere models and found the secondary star to have a temperature of 2800+/-200 K. Six months later, ST LMi was reobserved in the near-infrared, at which time mass transfer had resumed, and the system was in a high state.

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