A Search for Variable Stars in Selected Fields of the Open Cluster NGC 752

Details A Search for Variable Stars in Selected Fields of the Open Cluster NGC 752 A Search for Variable Stars in Selected Fields of the Open Cluster NGC 752

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20923007m&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #230.07; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astrophysics

Scientific paper

NGC 752 is an intermediate age open cluster that has been on the binaries-in-clusters program at the Rothney Astrophysical Observatory (RAO) of the University of Calgary. About 2000 images of the open cluster NGC 752 in UBVI passbands were obtained with a 2048x2048 pixel CCD on the 40-in telescope at the Mount Laguna Observatory (MLO), Nov 5-20 UT, 2004, complementing observations made in the 1990s at the same site, and photoelectric photometry carried out at Table Mountain Observatory and at the the RAO in the 1980s by (SJS). The 14 arc-min. fields were selected near the two known eclipsing variables in the cluster, QX And and DS And, and around the cluster’s one known blue-straggler, Heineman 209, once suspected of variability. New light curves and limits to variability will be discussed. The variability search has made use of detection and period-finding algorithms developed by one of us (MDW). It is a pleasure to thank the former and present directors of MLO, Ron Angione, and Paul Etzel, for generous amounts of observing time. This work was supported by grants to EFM from NSERC of Canada.

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