AAS 207th Meeting, 8-12 January 2006
Session 54 Supernovae, Novae, and Cataclysmic Variables
Oral, Monday, 2:30-4:00pm, January 9, 2006, Salon 3

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[54.02] Intensive Monitoring of the Cataclysmic Variables in the Core of the Nearby Globular Cluster NGC 6397-More eruptions

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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