Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Gokce, E. Yaz"'
We used the spectroscopic and astrometric data provided from the GALAH DR2 and Gaia DR2, respectively, for a large sample of stars to investigate the behaviour of the [$\alpha$/Fe] abundances via two procedures, i.e. kinematically and spectroscopical
Externí odkaz:
http://arxiv.org/abs/1909.02767
We present the calibration of the [$\alpha/$Fe] element in terms of ultra-violet excess for 465 dwarf stars with spectral type F0-K2. We used a single calibration, fitted to a third degree polynomial with a square of the correlation coefficient 0.74
Externí odkaz:
http://arxiv.org/abs/1708.08839
We present the calibration of the [$\alpha$/Fe] element in terms of the ultra-violet excess for 469 dwarf stars with $0.325<(B-V)_0 \leq 0.775$ mag corresponding the spectral type range F0-K2. The star sample is separated into nine sub-samples with e
Externí odkaz:
http://arxiv.org/abs/1609.04326
Autor:
Gokce, E. Yaz, Karaali, S., Duran, S., Bilir, S., Yalcinkaya, A., Ak, S., Ak, T., Lopez-Corredoira, M., Cabrera-Lavers, A.
We estimated the scale-length of the thin disc with the J and W1 magnitudes of the most probable Red Clump (RC) stars in the Galactic plane, $-0\overset{^\circ}.5 \leq b \leq +0\overset{^\circ}.5$, in 19 equal sized fields with consecutive Galactic l
Externí odkaz:
http://arxiv.org/abs/1503.01781
Autor:
Eker, Z., Soydugan, F., Soydugan, E., Bilir, S., Gokce, E. Yaz, Steer, I., Tuysuz, M., Senyuz, T., Demircan, O.
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) h
Externí odkaz:
http://arxiv.org/abs/1501.06585
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:
http://arxiv.org/abs/1405.5650
Autor:
Eker, Z., Bilir, S., Soydugan, F., Gokce, E. Yaz, Soydugan, E., Tuysuz, M., Senyuz, T., Demircan, O.
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
Externí odkaz:
http://arxiv.org/abs/1403.1583
Autor:
Ak, S., Ak, T., Karaali, S., Bilir, S., Guctekin, S. Tuncel, Tas, O. Onal, Ozturkmen, N. D., Duran, S., Coskunoglu, B., Yontan, T., Gokce, E. Yaz, Eker, Z.
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$) at ef
Externí odkaz:
http://arxiv.org/abs/1401.5479
We investigated the space velocity components of 6610 red clump (RC) stars in terms of vertical distance, Galactocentric radial distance and Galactic longitude. Stellar velocity vectors are corrected for differential rotation of the Galaxy which is t
Externí odkaz:
http://arxiv.org/abs/1401.2601
We combined the ($K_s$, $J-K_s$) data in Laney et al. (2012) with the $V$ apparent magnitudes and trigonometric parallaxes taken from the Hipparcos catalogue and used them to fit the $M_{K_s}$ absolute magnitude to a linear polynomial in terms of $V-
Externí odkaz:
http://arxiv.org/abs/1304.2530