39 citations · 346 across the 22 of their papers we have counts for
5 papers · 1 filter
Metallicity Calibration and Photometric Parallax Estimation: II. SDSS photometry
S. Tuncel Guctekin, S. Bilir, S. Karaali +4
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, defined with d…
Local Stellar Kinematics from RAVE data - VII. Metallicity Gradients from Red Clump Stars
O. Onal Tas, S. Bilir, G. M. Seabroke +4
We investigate the Milky Way Galaxy's radial and vertical metallicity gradients using a sample of 47,406 red clump stars from the RAVE DR4. This sample is more than twice the size…
CCD UBV Photometry and Kinematics of the Open Cluster NGC 225
S. Bilir, Z. F. Bostanci, T. Yontan +6
We present the results of CCD photometric and spectroscopic observations of the open cluster NGC 225. In order to determine the structural parameters of NGC 225, we calculate…
Metallicity Calibration and Photometric Parallax Estimation: I. UBV photometry
S. Tuncel Guctekin, S. Bilir, S. Karaali +3
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 star…
CCD UBV photometry of the open cluster NGC 6819
T. Ak, Z. F. Bostanci, T. Yontan +5
We present the results of CCD UBV observations of the open cluster NGC 6819. We calculated the stellar density profile in the cluster's field to determine the structural parameters…