The WIYN Open Cluster Study: First results on NGC 188

Details The WIYN Open Cluster Study: First results on NGC 188 The WIYN Open Cluster Study: First results on NGC 188

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.0308v&link_type=abstract

American Astronomical Society, 188th AAS Meeting, #03.08; Bulletin of the American Astronomical Society, Vol. 28, p.822

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a description of a large study of open clusters which is being undertaken at the WIYN telescope. We also present our early results on the old (age >= 5 Gyrs) open cluster NGC 188. We have studied this cluster at the KPNO 0.9m telescope to obtain wide field photometry of the bright stars, and at the WIYN telescope to obtain much deeper photometry, to V >= 24. We present color magnitude diagrams spanning ~ 13 magnitudes in V, vastly improving upon previous, mostly photographic, work. We use the observed color magnitude diagram and luminosity function to determine the age, distance and reddening of this cluster. We also report on the low mass main sequence luminosity function and its implications for the cluster IMF.

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