The new pre-cataclysmic binary PG 2200+085

Abstract

We present the results of spectroscopic-- and orbit--sampled photometric observations of the faint UV-excess object PG 2200+085. The optical CCD photometry observations of this object were performed by the Russian-Turkish 1.5-meter telescope RTT150 at the TUBITAK National Observatory (Turkey). The long-slit optical spectroscopy observations with 2.6 A resolution were carried out by 6-meter telescope BTA at the Special Astrophysical Observatory (Russia). The photometric variations over two nights are almost sinusoidal with an amplitude Δm_V = 0.04 m and a period of P = 0.3186 d. Such a light curve is typical of a detached close binary with an illumination effect or the ellipsoidal deformation of a secondary star. The observed spectrum clearly displays a featureless blue continuum of a hot component and a rich absorption--line and molecular band K--star spectrum. The CaII line profiles with strong emission cores are remarkably similar to those of V471 Tau. We tentatively classify PG 2200+085 as a pre-cataclysmic binary of the V471 Tau type.

8 pages, 5 figures, accepted for publication in A&A

References in corpus (14)

• Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (Seventh edition)
• The age, life expectancy, and space density of Post Common Envelope Binaries
• Hubble Space Telescope Spectroscopy of V471 Tauri: Oversized K Star, Paradoxical White Dwarf
• Photometry of four binary subdwarf B stars and the nature of their unseen companion stars
• HS 0705+6700: a new eclipsing sdB binary
• The DA+dMe eclipsing binary EC13471-1258: its cup runneth over...just
• A First Look at White Dwarf - M Dwarf Pairs in the Sloan Digital Sky Survey (SDSS)
• Long-term evolution of compact binaries with irradiation feedback
• Six detached white-dwarf close binaries
• HS2237+8154: On the onset of mass transfer or entering the period gap?
• RX J2130.6+4710 - an eclipsing white dwarf - M-dwarf binary star
• A close binary nucleus in the most oxygen-poor planetary nebula PN G 135.9+55.9
• New VI photometry of the sdOB binary AA Dor and an improved photometric model
• Confirmation of SBS 1150+599A As An Extremely Metal-Poor Planetary Nebula

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