BVRIJHK photometry and proper motion analysis of NGC 6253 and the surrounding field

Abstract

Context. We present a photometric and astrometric catalog of 187963 stars located in the field around the old super-metal-rich Galactic open cluster NGC 6253. The total field-of-view covered by the catalog is 34' x 33'. In this field, we provide CCD BVRI photometry. For a smaller region close to the cluster's center, we also provide near-infrared JHK photometry. Aims. We analyze the properties of NGC 6253 by using our new photometric data and astrometric membership. Methods. In June 2004, we targeted the cluster during a 10 day multi-site campaign, which involved the MPG/ESO 2.2m telescope with its wide-field imager and the Anglo-Australian 3.9m telescope, equipped with the IRIS2 near-infrared imager. Archival CCD images of NGC 6253 were used to derive relative proper motions and to calculate the cluster membership probabilities. Results. We have refined the cluster's fundamental parameters, deriving (V_0-M_v)=11.15, E(B - V)=0.15, E(V - I)=0.25, E(V - J)=0.50, and E(V - H)=0.55. The color excess ratios obtained using both the optical and near infrared colors indicate a normal reddening law in the direction of NGC 6253. The age of NGC 6253 at 3.5 Gyr, determined from our best-fitting isochrone appears to be slightly older than the previous estimates. Finally, we estimated the binary fraction among the cluster members to be \sim20%-30% and identified 11 blue straggler candidates.

16 pages, 13 figures, 11 tables. Accepted for publication in A&A. Catalog avaiable via CDS

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Cited by in corpus (12)

• Ensemble analysis of open cluster transit surveys: upper limits on the frequency of short-period planets consistent with the field
• Lithium Abundances of the Super-Metal-Rich Open Cluster NGC 6253
• C, N, O abundances and carbon isotope ratios in evolved stars of the open clusters Collinder 261 and NGC 6253
• Proper motions in the VVV Survey: Results for more than 15 million stars across NGC 6544
• WIYN Open Cluster Study. XXXIX. Abundances in NGC 6253 from HYDRA Spectroscopy of the Li 6708 A Region
• Radial Velocities of Three Poorly Studied Clusters and the Kinematics of Open Clusters
• Rotational and Radial Velocities of 1.3-2.2 M_Sun Red Giants in Open Clusters
• Variable Stars in the Open Cluster NGC 7142
• VLT multi-epoch radial velocity survey toward NGC 6253. Analysis of three transiting planetary candidates
• Planets in Open Clusters Detectable by Kepler
• A proper motion study of the globular cluster M55
• An extensive radial velocity survey toward NGC 6253