Astrophysical Parameters of the Open Cluster NGC 2509

Year 2023, , 1036 - 1045, 18.10.2023

Talar Yontan , Seliz Koç

https://doi.org/10.16984/saufenbilder.1215972

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

Supporting Institution

TÜBİTAK

Project Number

122F109

Thanks

This study has been supported in part by the Scientific and Technological Research Council (TÜBİTAK) 122F109. We also made use of VizieR and Simbad databases at CDS, Strasbourg, France. We made use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

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