Spectroscopy of GW Librae at Quiescence

January 2000 • 2000AJ....119..365S

Authors • Szkody, Paula • Desai, Vandana • Hoard, D. W.

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.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2000AJ....119..365S
• PDF https://stacks.iop.org/1538-3881/119/365/pdf
• ELECTR https://doi.org/10.1086%2F301183