[ITAL]Hubble Space Telescope[/ITAL] Observations of the Post–Core-Collapse Globular Cluster NGC 6752: A Search for Cataclysmic Variables | Zendy

C. D. Bailyn | Zendy; Eric P. Rubenstein | Zendy; S. D. Slavin | Zendy; H. N. Cohn | Zendy; P. M. Lugger | Zendy; A. M. Cool | Zendy; J. E. Grindlay | Zendy

Open Access

[ITAL]Hubble Space Telescope[/ITAL] Observations of the Post–Core-Collapse Globular Cluster NGC 6752: A Search for Cataclysmic Variables

Author(s) -

C. D. Bailyn,

Eric P. Rubenstein,

S. D. Slavin,

H. N. Cohn,

P. M. Lugger,

A. M. Cool,

J. E. Grindlay

Publication year - 1996

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/310382

Subject(s) - physics , globular cluster , astrophysics , astronomy , hubble space telescope , cataclysmic variable star , blue straggler , star cluster , stars , light curve , variable star , white dwarf

We report the results of HST WFPC2 observations of the core of NGC 6752. We identify two candidate cataclysmic variables (CVs) from their strong narrowband Hα emission, periodic variability, and, in one case, a UV excess. We interpret the variability of these stars as being double-peaked, ellipsoidal light curves, in which case the orbital periods are 5.1 and 3.7 hr. The CV candidates fall at the edge of the error circle of one of the known X-ray sources in the cluster.

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