Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20712214c&link_type=abstract
American Astronomical Society Meeting 207, #122.14; Bulletin of the American Astronomical Society, Vol. 37, p.1366
Astronomy and Astrophysics
Astronomy
Scientific paper
Using Alard's (2000) image-subtraction method, we recently discovered a number of new variables in this cluster, pointing to an unusual Oosterhoff-intermediate classification (Corwin et al. 2003). The present study also uses image subtraction with the data reported on in our previous analysis. This time, however, the image subtraction threshold was substantially reduced. This produced thousands of false identifications, but, in addition to the previoulsy known variables, we found four new variables, all very close to the cluster core. Here we present periods and light curves for the four new variables.
Catelan Márcio
Corwin Michael T.
Scott Nicholas J.
Smith Harold A.
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