84 citations · 310 across the 18 of their papers we have counts for
9 papers · 1 filter
Transit timing variation analysis of the low-mass brown dwarf KELT-1 b
Ö. Baştürk, J. Southworth, S. Yalçınkaya +8
We investigate whether there is a variation in the orbital period of the short-period brown dwarf-mass KELT-1\,b, which is one of the best candidates to observe orbital decay. We o…
Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey
P. Benni, A. Y. Burdanov, V. V. Krushinsky +64
We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of and a radius of , the first sub-stell…
Discovery of a pre-cataclysmic binary with unusual chromaticity of the eclipsed white dwarf by the GPX Survey
Vadim Krushinsky, Paul Benni, Artem Burdanov +14
We report the discovery of a relatively bright eclipsing binary system, which consists of a white dwarf and a main sequence K7 star with clear signs of chromospheric and spot activ…
Photometric, Spectroscopic and Orbital Period Study of Three Early Type Semi-detached Systems: XZ Aql, UX Her and AT Peg
S. Zola, O. Basturk, A. Liakos +6
In this paper we present a combined photometric, spectroscopic and orbital period study of three early-type eclipsing binary systems: XZ Aql, UX Her, and AT Peg. As a result, we ha…
Abundance analysis of the supergiant stars HD 80057 and HD 80404 based on their UVES Spectra
Taner Tanrıverdi, Özgür Baştürk
This study presents elemental abundances of the early A-type supergiant HD 80057 and the late A-type supergiant HD80404. High resolution and high signal-to-noise ratio spectra publ…
Photometric analysis of overcontact binaries AK Her, HI Dra, V1128 Tau and V2612 Oph
S. Caliskan, O. Latkovic, G. Djurasevic +7
We analyze new, high quality multicolor light curves of four overcontact binaries: AK Her, HI Dra, V1128 Tau and V2612 Oph, and determine their orbital and physical parameters usin…
Physical Parameters of Some Close Binaries: ET Boo, V1123 Tau, V1191 Cyg, V1073 Cyg and V357 Peg
F. Ekmekçi, A. Elmaslı, M. Yılmaz +7
With the aim of providing new and up-to-date absolute parameters of some close binary systems, new BVR CCD photometry was carried out at the Ankara University Observatory (AUG) for…
Bisectors of the HARPS Cross-Correlation-Function. The dependence on stellar atmospheric parameters
O. Basturk, T. H. Dall, R. Collet +2
Bisectors of the HARPS cross-correlation function (CCF) can discern between planetary radial-velocity (RV) signals and spurious RV signals from stellar magnetic activity variations…
Physical parameters of close binaries QX Andromedae, RW Comae Berenices, MR Delphini, and BD +07{\circ} 3142
G. Djurasevic, M. Yilmaz, O. Basturk +3
Aims. We analyze new multicolor light curves and recently published radial velocity curves for close binaries QX And, RW Com, MR Del, and BD +07{\circ} 3142 to determine the physic…