Open Clusters in the Kepler Field, II. NGC 6866

Abstract

We have developed a maximum-likelihood procedure to fit theoretical isochrones to the observed cluster color-magnitude diagrams of NGC 6866, an open cluster in the Kepler Spacecraft field of view. The Markov-Chain Monte Carlo algorithm permits exploration of the entire parameter space of a set of isochrones to find both the best solution and the statistical uncertainties. For clusters in the age range of NGC 6866, with few if any red giant members, a purely photometric determination of the cluster properties is not well-constrained. Nevertheless, based on our UBVRI photometry alone, we have derived the distance, reddening, age and metallicity of the cluster and established estimates for the binary nature and membership probability of individual stars. We derive the following values for the cluster properties: $(m-M{)}_V=10.98\pm 0.24$, $E(B-V)=0.16\pm 0.04$ (so the distance = 1250 pc), age $=705\pm 170$\ Myr and $Z=0.014\pm 0.005$.

arXiv comment8 pages, 6 figures, accepted for publication in the Astronomical Journal

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Cited by in corpus (9)

• The Gaia-ESO survey: Calibrating a relationship between Age and the [C/N] abundance ratio with open clusters
• A comprehensive study of the open cluster NGC 6866
• The Swift/UVOT Stars Survey. III. Photometry and Color-Magnitude Diagrams of 103 Galactic Open Clusters
• CCD UBV photometry of the open cluster NGC 6819
• CCD UBV photometric study of five open clusters - Dolidze 36, NGC 6728, NGC 6800, NGC 7209 and Platais 1
• Photometric studies of two W UMa type variables in the field of distant open cluster NGC6866
• Understanding the Planetary Formation and Evolution in Star Clusters(UPiC)-I: Evidence of Hot Giant Exoplanets Formation Timescales
• Study of the Open Clusters in Kepler Prime Field
• Asteroseismology of KIC 8263801:Is it a member of NGC 6866 and a red clump star?