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Identification of five interacting binaries in the galactic bulge survey
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Britt, Christopher B. T., Torres, M. A. P., Hynes, Robert I., Jonker, P. G., Maccarone, T. J., Greiss, Sandra, Steeghs, D., Groot, P. J., Knigge, Christian, Dieball, A., Nelemans, G., Mikles, V. J. and Gossen, L. (2013) Identification of five interacting binaries in the galactic bulge survey. The Astrophysical Journal, Volume 769 (Number 2). Article number 120. doi:10.1088/0004-637X/769/2/120 ISSN 0004-637X.
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Official URL: http://dx.doi.org/10.1088/0004-637X/769/2/120
Abstract
We present optical light curves, spectroscopy, and classification of five X-ray sources in the Chandra Galactic Bulge Survey (CXOGBS J174009.1–284725 (CX5), CXOGBS J173935.7–272935 (CX18), CXOGBS J173946.9–271809 (CX28), CXOGBS J173729.1–292804 (CX37), CXOGBS J174607.6–261547 (CX561)). These objects were selected based on bright optical counterparts which were quickly found to have emission lines in their optical spectra. This paper presents an illustration of GBS optical follow-up, targeting emission line objects. Of these five objects, four exhibit photometric variability in the Sloan r' band. CX5 shows a tentative period of 2.1 hr and is clearly an intermediate polar (IP). CX28 and CX37 both exhibit flickering with no clear period. Both are also suggested to be IPs. CX18 was observed to undergo two dwarf nova outbursts. Finally, CX561 shows no detectable variability, although its characteristics would be consistent with either a quiescent low-mass X-ray binary or cataclysmic variable.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Double stars, Galactic bulges, X-ray binaries, Cataclysmic variable stars, Dwarf novae | ||||
Journal or Publication Title: | The Astrophysical Journal | ||||
Publisher: | Institute of Physics Publishing, Inc. | ||||
ISSN: | 0004-637X | ||||
Official Date: | 2013 | ||||
Dates: |
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Volume: | Volume 769 | ||||
Number: | Number 2 | ||||
Article Number: | Article number 120 | ||||
DOI: | 10.1088/0004-637X/769/2/120 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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