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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. ISSN 00358711

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

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:

Date	Event
2012	Published

Volume:

Vol.422

Number:

No.1

Page Range:

pp. 469-477

Identification Number:

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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