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astro-ph2003
A High Relative-Precision Color-Magnitude Diagram of M67
Eric L. Sandquist
We have calibrated an extensive set of BVI observations of M67. We have selected stars that are most likely to be single-star members of the cluster using proper motion, radial vel…
astro-ph2003
S986 in M67: A Totally-Eclipsing Binary at the Cluster Turnoff
Eric L. Sandquist, Matthew D. Shetrone
We have discovered that the star S986 in the old open cluster M67 has detectable total eclipses of depth 0.08 mag for the primary eclipse and 0.011 mag for the secondary eclipse (i…
astro-ph2003
Time-Series Photometry of M67: W UMa Systems, Blue Stragglers, and Related Systems
Eric L. Sandquist, Matthew D. Shetrone
We present an analysis of over 2200 V images taken on 14 nights at the Mt. Laguna 1 m telescope of the open cluster M67. Our observations overlap but extend beyond the field analyz…