Spectroscopy of GW Librae at Quiescence
Abstract
Three nights of blue and red spectroscopy of the extreme-amplitude dwarf nova GW Lib at quiescence show that the orbital period is 79.4 minutes and the semiamplitude of the Hβ emission-line velocity curve is 40.0 km s-1. The emission lines are very narrow and are surrounded by absorption troughs. The spectra are roughly consistent with that of a white dwarf of temperature near 11,000 K contributing 100% of the light at a distance of 114 pc. The short orbital period and low M are consistent with the general properties of extreme-amplitude dwarf novae.
- Publication:
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The Astronomical Journal
- Pub Date:
- January 2000
- DOI:
- Bibcode:
- 2000AJ....119..365S
- Keywords:
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- STARS: BINARIES: SPECTROSCOPIC;
- STARS: NOVAE;
- CATACLYSMIC VARIABLES;
- STARS: INDIVIDUAL (GW LIB)