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A radial velocity study of CTCV J1300−3052

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Savoury, C. D. J., Littlefair, S. P., Marsh, T. R., Dhillon, V. S., Parsons, S. G., Copperwheat, C. M. and Steeghs, D. (2012) A radial velocity study of CTCV J1300−3052. Monthly Notices of the Royal Astronomical Society, Vol.422 (No.1). pp. 469-477. doi:10.1111/j.1365-2966.2012.20625.x

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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2012.20625.x

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Abstract

We present time-resolved spectroscopy of the eclipsing, short-period cataclysmic variable CTCV J1300−3052. Using absorption features from the secondary star, we determine the radial velocity semi-amplitude of the secondary star to be K2= 378 ± 6 km s−1, and its projected rotational velocity to be v sin i= 125 ± 7 km s−1. Using these parameters and Monte Carlo techniques, we obtain masses of M1= 0.79 ± 0.05 M⊙ for the white dwarf primary and M2= 0.198 ± 0.029 M⊙ for the M-type secondary star. These parameters are found to be in good agreement with previous mass determinations found via photometric fitting techniques, supporting the accuracy and validity of photometric mass determinations in short-period CVs.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Cataclysmic variable stars
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Wiley
ISSN: 00358711
Official Date: 2012
Dates:
DateEvent
2012Published
Volume: Vol.422
Number: No.1
Page Range: pp. 469-477
DOI: 10.1111/j.1365-2966.2012.20625.x
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Science and Technology Facilities Council (Great Britain) (STFC), Research Councils UK (RCUK)

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