SIMBAD references

2000AJ....120.1113H - Astron. J., 120, 1113-1119 (2000/August-0)

Post-common-envelope binary stars and the precataclysmic binary PG 1114+187.


Abstract (from CDS):

We present orbit-resolved spectroscopy and orbit-sampled photometry of the binary system PG 1114+187. Both photometry and radial velocity studies reveal a period P=1.75992 days, which is taken to be the orbital period of the binary. Strong modulation of emission-line strength with the same period is also present. A preliminary mass ratio, M2/M1~0.7, is found from primary- and secondary-star radial velocity amplitudes. No evidence is seen for either an accretion disk or mass transfer, leading to the conclusion that PG 1114+187 is not a cataclysmic variable (CV) but is in a pre-CV state, before the initiation of mass transfer. The short orbital period also leads to the conclusion that the system passed through a common-envelope phase at some time in the past. The current list of known post-common-envelope and precataclysmic binary stars is also reviewed and the general properties of this class of star are discussed.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Close - stars: individual (PG 1114+187)

Simbad objects: 42

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