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A Search for Cataclysmic Binaries in the Globular Cluster M3

Published online by Cambridge University Press:  04 August 2017

M. M. Shara
Affiliation:
Space Telescope Science Institute, Baltimore
A. F. J. Moffat
Affiliation:
Dept. de Physique, Universite de Montreal
D. A. Hanes
Affiliation:
Anglo-Australian Observatory

Abstract

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Deep Hβ narrowband and broadband images of M3 have been electronically blinked to search for cataclysmic binaries. Tests of the method on a known, faint cataclysmic enable us to set limits on the sensitivity of the technique. No bright (MB < 6) emission-line (equivalent width > 12 Å) cataclysmic binaries exist in M3 between 4 and 30 core radii from the center. Low luminosity globular X-ray sources could still be weak-lined (E.W. < 12 Å) and bright (MB ≃ +5 like some old novae) or strong-lined (E.W. ≃ 60 Å) and faint (MB > 7 like dwarf novae).

Type
May 29: Observations of Globular Clusters
Copyright
Copyright © Reidel 1985