Yazar "Ozer, S." seçeneğine göre listele

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    Empirical bolometric correction coefficients for nearby main-sequence stars in the Gaia era
    (Oxford Univ Press, 2020) Eker, Z.; Soydugan, Faruk; Bilir, S.; Bakis, V; Alicavus, F.; Ozer, S.; Aslan, G.
    Nearby detached double-lined eclipsing binaries with most accurate data were studied and 290 systems were found with at least one main-sequence component having a metallicity of 0.008 <= Z <= 0.040. Stellar parameters, light ratios, Gaia Data Release 2 trigonometric parallaxes, extinctions and/or reddening were investigated and only 206 systems were selected as eligible to calculate empirical bolometric corrections. NASA/IPAC Galactic dustmaps were the main source of extinctions. Unreliable extinctions at low Galactic latitudes vertical bar b vertical bar <= 5 degrees were replaced with individual determinations, if they exist in the literature, else associated systems were discarded. The main-sequence stars of te remaining systems were used to calculate the bolometric corrections (BCs) and to calibrate the BC-T-eff relation, which is valid in the range 3100-36 000 K. De-reddened (B - V)(0) colours, on the other hand, allowed us to calibrate two intrinsic colour-effective temperature relations; the linear one is valid for T-eff > 10 000 K, while the quadratic relation is valid for T-eff < 10 000 K; that is, both are valid in the same temperature range in which the BC-Teff relation is valid. New BCs computed from Teff and other astrophysical parameters are tabulated, as well.
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    First Photometric is Study of Two Southern Eclipsing Binaries IS Tel and DW Aps
    (Amer Inst Physics, 2017) Ozer, S.; Surgit, D.; Erdem, A.; Ozturk, O.
    The paper presents the first photometric analysis of two southern eclipsing binary stars, IS Tel and DW Aps. Their V light curves from the All Sky Automated Survey were modelled by using Wilson-Devinney method. The final models give these two Algol-like binary stars as having detached configurations. Absolute parameters of the components of the systems were also estimated.
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    Light Curve Analysis of Southern Detached Binary: CPD-79 92
    (Amer Inst Physics, 2018) Ozer, S.; Surgit, D.
    This paper presents the first photometric solution of CPD-79 92 (GSC 09370-00140 = TYC 9370-140-1 = ASAS J030739-7856.5, V=10.32 mag). The ASAS V light curve of the system was analyzed using Wilson and Devinney code. The photometric mass ratio of the system was derived with q-search method. Then, the absolute parameters of system were estimated.
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    Photometric Study of Two Detached Binaries FW Vel and BB Mon
    (Amer Inst Physics, 2017) Ozer, S.; Surgit, D.
    We present the first analysis of photometric observations of two detached binary stars, FW Vel and BB Mon. Their V light curves from the All Sky Automated Survey were solved using Monte Carlo Search Method. The final solutions describe these two systems as Algol-like binary stars with detached configurations. The absolute parameters of the components of the systems were also estimated.