Variable Stars in the Globular Cluster NGC 6637 (M69)

Details Variable Stars in the Globular Cluster NGC 6637 (M69) Variable Stars in the Globular Cluster NGC 6637 (M69)

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.5204g&link_type=abstract

American Astronomical Society Meeting 203, #52.04; Bulletin of the American Astronomical Society, Vol. 35, p.1289

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present time-series VI photometry of the metal-rich globular cluster NGC 6637. Our color-magnitude diagrams show a predominantly red-clump horizontal branch morphology with hints of a blue horizontal branch extension as seen in NGC 6388 and NGC 6441. We discovered at least four new long-period variable stars in addition to recovering the nine variable stars already discovered. We discuss the cluster membership probabilities of the variables, and present their light curves. This work was funded by a grant from the NSF.

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