Recovering Long-Term Lightcurves from the Harvard Plates: A Search for Eclipsing Binaries in M44

Details Recovering Long-Term Lightcurves from the Harvard Plates: A Search for Eclipsing Binaries in M44 Recovering Long-Term Lightcurves from the Harvard Plates: A Search for Eclipsing Binaries in M44

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20916203s&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #162.03; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We search for eclipsing binary stars in M44 using the archival data from the Harvard plates collection. Our group, the DASCH collaboration digitized the images of the Harvard plates pointing at M44 using a custom-built scanner. These plate images provide a look at the past 100 years of the cluster's history. We fit world coordinate systems onto these plates images and, by comparing to the ASAS photometric catalog, fit the nonlinear photometry curve for stars on the plate. We search for stars whose magnitude changed by more than statistical error, conduct a periodicity search on those candidate lightcurves, and fit those to folded lightcurves We find one candidate binary, GSC1993:2093, which exihibits a nearly three magnitude drop in luminosity

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