Zobrazeno 1 - 6
of 6
pro vyhledávání: '"S. Tuncel Guctekin"'
Autor:
T. Yontan, Serap Ak, M. Celebi, S. Tuncel Guctekin, Salih Karaali, Tansel Ak, Selçuk Bilir, N. Alan, O. Plevne
Publikováno v:
Publications of the Astronomical Society of Australia. 37
We derive transformation equations between GALEX and UBV colours by using the reliable data of 556 stars. We present two sets of equations; as a function of (only) luminosity class, and as a function of both luminosity class and metallicity. The meta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d055f17709b8d2e31756143af1b898f
https://doi.org/10.1017/pasa.2020.12
https://doi.org/10.1017/pasa.2020.12
Autor:
M. Celebi, Selçuk Bilir, T. Yontan, Salih Karaali, Tansel Ak, Neslihan Alan, O. Plevne, S. Tuncel Guctekin, Serap Ak
Publikováno v:
TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35).
The insufficiency of photometric data in the U-band of the FGK-type stars in the solar neighborhood makes difficult to determine the flux of the blue region of their spectral energy distributions, and causes to the inadequacy in the estimation of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::effca5dacf902b17c7e5b027a3fd5533
https://doi.org/10.1063/1.5135420
https://doi.org/10.1063/1.5135420
Autor:
Serap Ak, Tansel Ak, Z. F. Bostanci, Selçuk Bilir, O. Plevne, S. Tuncel Guctekin, Salih Karaali
We used the updated [Fe/H] abundances of 168 F-G type dwarfs and calibrated them to a third order polynomial in terms of reduced ultraviolet excess, $\delta_{0.41}$ defined with $ugr$ data in the SDSS. We estimated the $M_g$ absolute magnitudes for t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6486d386d9a0dd0075c9422862cea9ef
We present metallicity and photometric parallax calibrations for the F and G type dwarfs with photometric, astrometric and spectroscopic data. The sample consists of 168 dwarf stars covering the colour, iron abundance and absolute magnitude intervals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d12184eca8dc7b8fc990165767f00884
We present two absolute magnitude calibrations for dwarfs based on colour-magnitude diagrams of Galactic clusters. The combination of the $M_g$ absolute magnitudes of the dwarf fiducial sequences of the clusters M92, M13, M5, NGC 2420, M67 and NGC 67
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfdfa30a91f675f3d487136a6841465d
http://arxiv.org/abs/1405.5650
http://arxiv.org/abs/1405.5650
Autor:
Selçuk Bilir, T. Yontan, S. Duran, Zeki Eker, B. Coşkunoǧlu, Serap Ak, O. Onal Tas, Tansel Ak, E. Yaz Gökçe, Salih Karaali, N. D. Ozturkmen, S. Tuncel Guctekin
The transformation equations from $BVR_c$ to $g'r'i'$ magnitudes and vice versa for the giants were established from a sample of 80 stars collected from Soubiran et al. (2010) with confirmed surface gravity ($2\leq \log g$ (cms$^{-2}$)$ \leq3$) at ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cddee4da6f12b3643bdefb91dee9853