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26 April 2024 |
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The new pre-cataclysmic binary PG 2200+085 | | V. Shimansky
; N.A.Sakhibullin
; I.Bikmaev
; H.Ritter
; V. Suleimanov
; N. Borisov
; A. Galeev
; | | Date: |
10 Jun 2006 | | 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 Delta m_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. | | Source: | arXiv, astro-ph/0606245 | | Services: | Forum | Review | PDF | Favorites | |
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