Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Coskunoglu, B."'
In this paper the results of matching the RAdial Velocity Experiment (RAVE), a spectroscopic Southern hemisphere survey (9 $ < I_{DENIS} <$ 12), and XMM-Newton Serendipitous Source Catalogue (3XMM) are presented. The latest data releases of RAVE and
Externí odkaz:
http://arxiv.org/abs/1901.08859
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 age-metallicity relation using a sample of 5691 F and G type dwarfs from RAVE DR3 by applying several constraints: i) We selected stars with surface gravities log g < 3.8 and effective temperatures in the 5310
Externí odkaz:
http://arxiv.org/abs/1306.5747
Autor:
Coskunoglu, B., Ak, S., Bilir, S., Karaali, S., Onal, O., Yaz, E., Gilmore, G., Seabroke, G. M.
We investigate radial metallicity gradients for a sample of dwarf stars from the RAdial Velocity Experiment (RAVE) Data Release 3 (DR3). We select a total of approximately 17000 F-type and G-type dwarfs using selection of colour, log g, and uncertain
Externí odkaz:
http://arxiv.org/abs/1109.6519
The second RAdial Velocity Experiment (RAVE) Data Release (DR2) derives log g values but we present a simpler and cleaner method of identifying dwarfs and giants using only magnitudes, which does not require spectroscopic analysis. We confirm the Bil
Externí odkaz:
http://arxiv.org/abs/1107.4268
Autor:
Bilir, S., Karaali, S., Ak, S., Dagtekin, N. D., Onal, O., Yaz, E., Coskunoglu, B., Cabrera-Lavers, A.
We present colour transformations for the conversion of the W1 and W2 magnitudes of WISE photometric system to the Johnson-Cousins' BVRI, SDSS (gri), and 2MASS (JHK_s) photometric systems, for dwarfs. The W3 and W4 magnitudes were not considered due
Externí odkaz:
http://arxiv.org/abs/1107.1350
We used the data of 701 stars covering the colour index interval 0.32
Externí odkaz:
http://arxiv.org/abs/1102.1991
Autor:
Coskunoglu, B., Ak, S., Bilir, S., Karaali, S., Yaz, E., Gilmore, G., Seabroke, G. M., Bienayme, O., Bland-Hawthorn, J., Campbell, R., Freeman, K. C., Gibson, B., Grebel, E. K., Munari, U., Navarro, J. F., Parker, Q. A., Siebert, A., Siviero, A., Steinmetz, M., Watson, F. G., Wyse, R. F. G., Zwitter, T.
We analyze a sample of 82850 stars from the RAVE survey, with well-determined velocities and stellar parameters, to isolate a sample of 18026 high-probability thin-disc dwarfs within 600 pc of the Sun. We derive space motions for these stars, and ded
Externí odkaz:
http://arxiv.org/abs/1011.1188
We present colour transformations from Two Micron All Sky Survey (2MASS) photometric system to Johnson-Cousins system and to Sloan Digital Sky Survey (SDSS) system for late-type giants and vice versa. The giant star sample was formed using surface gr
Externí odkaz:
http://arxiv.org/abs/1006.4475
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 BVRc 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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=r39c86a4b39b::a9f7ffc2a00da74f063ae983b1a5f52c
https://aperta.ulakbim.gov.tr/record/61219
https://aperta.ulakbim.gov.tr/record/61219