Tunc Senyuz

Tunc Senyuz
Çanakkale Onsekiz Mart Üniversitesi | ÇOMÜ · Department of Physics

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17
Publications
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208
Citations

Publications

Publications (17)
Article
Full-text available
The young binary system HD 350731 is a noteworthy laboratory for studying early-type binaries with similar components. We present here the analysis of differential multi-color photometric and spectroscopic observations for the double-lined detached system. Accurate absolute parameters were determined from the simultaneous solution of light and radi...
Article
Full-text available
The mass-luminosity (M-L), mass-radius (M-R) and mass-effective temperature ($M-T_{eff}$) diagrams for a subset of galactic nearby main-sequence stars with masses and radii accurate to $\leq 3\%$ and luminosities accurate to $\leq 30\%$ (268 stars) has led to a putative discovery. Four distinct mass domains have been identified, which we have tenta...
Conference Paper
Full-text available
In this study, the distributions of the double-lined detached binaries (DBs) on the planes of mass-luminosity, mass radius and mass-effective temperature have been studied. We improved the classical mass-luminosity relation based on the database of DBs by Eker et al. (2004a). With accurate observational data available to us, a method for improving...
Article
Full-text available
The most accurate stellar astrophysical parameters were collected from the solutions of the light and the radial velocity curves of 257 detached double-lined eclipsing binaries in the Milky Way. The catalogue contains masses, radii, surface gravities, effective temperatures, luminosities, projected rotational velocities of the component stars, and...
Article
In this study, 23 Algol-type binary systems, which were selected as candidate binaries with pulsating components, were observed at the Çanakkale Onsekiz Mart University Observatory. One of these systems was BG Peg. Its hotter component shows δ Scuti-type light variations. Physical parameters of BG Peg were derived from modelling the V light curve u...
Article
The close binary V337 Aql consists of two early B-type components with an orbital period of 2.7339 d. New multi-band photometric observations of the system together with published radial velocities enabled us to derive the absolute parameters of the components. The simultaneous light and radial velocity curves solution yields masses and radii of \e...
Article
In this work, we present the photometric study of A-type contact binaries V1073 Cyg and V357 Peg. The simultaneous solutions of BVR light and radial velocity curves of the systems are given. During the analysis of the light curves of V357 Peg, we have used two models included hot and dark spots. The third light contribution was also found for V357...
Article
In this work, we present the photometric study of A-type contact binaries V1073 Cyg and V357 Peg. The simultaneous solutions of BVR light and radial velocity curves of the systems are given. During the analysis of the light curves of V357 Peg, we have used two models included hot and dark spots. The third light contribution was also found for V357...
Article
This study presents new photometric observations of classical Algol type binary BG Peg with a δ Scuti component. The light curve modeling was provided with the physical parameters of the component stars in the BG Peg system for the first time. After modeling light curves in B and V filters, the eclipse and proximity effects were removed from the li...
Article
Full-text available
In this study, eclipsing binaries located in the delta Scuti region of the instability strip were chosen from the list of candidate eclipsing binary systems with delta Scuti components. These candidate systems were photometrically observed and some of them were announced to be new Algol-type binaries with delta Scuti components. Although the pulsat...
Article
We present the spectroscopic orbit solutions of three double-lines eclipsing binaries, BG Ind, IM Mon and RS Sgr. The first precise radial velocities (RVs) of the components were determined using high resolution echelle spectra obtained at Mt. John University Observatory in New Zealand. The RVs of the components of BG Ind and RS Sgr were measured u...
Article
Full-text available
We present the first ground-based photometric observations and results of EW Boo. The V light curve obtained over 12 nights in 2006 was analyzed by using the Wilson-Dewinney code. We also found that the primary component of the system shows δ Scuti-type variability.
Article
Full-text available
The long-term orbital period variations of the Algol-type binaries with δ Scuti compo- nent(oEA) AB Cas, CT Her, and TW Dra are investigated. An upward parabola is seen in all of these systems O-C diagrams, as is expected from the evolutionary scenario of clas- sical Algols. In addition to parabolic variations, the periodic variations on the parabo...
Article
New photometric observations of Algol type binary system EF Her were carried out in B, V and R filters during the 2007 observing season. In the literature, there is not any photometric or spectroscopic study of the system so far. Firstly, the new observations have been analyzed by using the Wilson-Dewinney code and the geometrical and physical para...
Article
New photometric observations of Algol type binary system EF Her were carried out in B, V and R filters during the 2007 observing season. In the literature, there is not any photometric or spectroscopic study of the system so far. Firstly, the new observations have been analyzed by using the Wilson-Dewinney code and the geometrical and physical para...

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