Astrophysical Parameters of the Open Cluster NGC 2509

Authors : Talar Yontan, Seliz Koç

Pages : 1036-1045

Doi:10.16984/saufenbilder.1215972

View : 91 | Download : 124

Publication Date : 2023-10-18

Article Type : Research Paper

Abstract :This study presents structural and fundamental astrophysical parameters of poorly studied open cluster NGC 2509. We used the third photometric and astrometric data release of the Gaia (Gaia DR3) to perform analyses. By taking into account the Gaia DR3 astrometric data, we calculated the membership probabilities of the stars in the region of NGC 2509. As a result of the membership analysis, 244 stars with membership probabilities P  50% were determined as the physical members of the cluster. The colour excess, distance and age were obtained simultaneously by fitting solar metallicity PARSEC isochrones to G×GBP-GRP colour-magnitude diagram. We considered the most likely cluster member stars during the fitting procedure and calculated the colour excess, distance and age of the NGC 2509 as E(GBP-GRP) = 0.100±0.184 mag, d = 2518±667 pc and t = 1.5±0.1 Gyr, respectively.
Keywords : Galaxy open cluster and associations individual NGC 2509, Galaxy Disc, stars Hertzsprung Russell HR diagram