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M.M. Shara (AMNH), J. Anderson (Rice U.), J.P. Brewer, S. Davis (UBC), G.G. Fahlman (HIA), B.M.S. Hansen (UCLA), J.R. Hurley (Monash U.), J. Kalirai (UBC), I.R. King (U. Washington), D. Reitzel, R.M. Rich (UCLA), H.B. Richer (UBC), P.B. Stetson (HIA), D. Zurek (AMNH)
The core of NGC 6397, the second nearest globular cluster, has been imaged almost daily for a month with WFPC2 on HST. Five cataclysmic variables (CVs) fall in our field of view. All are strongly variable on timescales of minutes to weeks. We will report on the five objects' eruptive behaviors, and our searches for periodic variability of these objects. No other CVs erupt in NGC 6397 during the month of monitoring, allowing us to place the best limits ever on the number of dwarf novae in a globular cluster.
Support from NASA/HST grant GO 10424 is gratefully acknowledged
The author(s) of this abstract have provided an email address for comments about the abstract: mshara@amnh.org
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.