V2368 Ophiuchi: an eclipsing and double-lined spectroscopic binary used as a photometric comparison star for U Ophiuchi

0372982 - ASÚ 2012 RIV FR eng J - Článek v odborném periodiku
Harmanec, P. - Božić, H. - Mayer, P. - Eenens, P. - Broz, M. - Wolf, M. - Yang, S. - Šlechta, Miroslav - Ruždjak, D. - Sudar, D. - Ak, H.
V2368 Ophiuchi: an eclipsing and double-lined spectroscopic binary used as a photometric comparison star for U Ophiuchi.
Astronomy & Astrophysics. Roč. 531, July (2011), A49/1-A49/10. ISSN 0004-6361. E-ISSN 1432-0746
Grant CEP: GA ČR GD205/08/H005; GA ČR GAP209/10/0967
Grant ostatní: GA ČR(CZ) GA205/06/0304
Výzkumný záměr: CEZ:AV0Z10030501
Klíčová slova: early-type stars * close binaries stars
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 4.587, rok: 2011

The A-type star HR 6412 = V2368 Oph was used by several investigators as a photometric comparison star for the known eclipsing binary U Oph but was found to be variable by three independent groups, including us. By analysing series of new spectral and photometric observations and a critical compilation of available radial velocities, we were able to find the correct period of light and radial-velocity variations and demonstrate that the object is an eclipsing and double-lined spectroscopic binary moving in a highly eccentric orbit.
Trvalý link: http://hdl.handle.net/11104/0206165