NGC 6811: An Intermediate-age Cluster In The Kepler Field

Details NGC 6811: An Intermediate-age Cluster In The Kepler Field NGC 6811: An Intermediate-age Cluster In The Kepler Field

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21822706j&link_type=abstract

American Astronomical Society, AAS Meeting #218, #227.06; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

NGC 6811 is one of four open clusters located in the Kepler spacecraft field of view. We have observed the cluster on several occasions with the 1.08-meter Hall and 1.83-meter Perkins telescopes at Lowell Observatory. A well-defined main sequence and red giant "clump" are clearly visible in the color-magnitude diagram; several of the red clump stars have velocities consistent with cluster membership. We have analyzed the data from two photometric nights (one night with each telescope) and we derive the following parameters for the cluster: E(B-V) = 0.04 ± 0.04, (m-M)o = 11.0 ± 0.2 and log(age) = 9.05 ± 0.10, all assuming a slightly metal-poor composition. We are continuing our analysis with additional photometry.

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