A radial velocity study of CTCV J1300-3052

C. D J Savoury; Stuart P Littlefair; Thomas R. Marsh; Vik S Dhillon; S. G. Parsons; C. M. Copperwheat; D. Steeghs

doi:10.1111/j.1365-2966.2012.20625.x

A radial velocity study of CTCV J1300-3052

C. D J Savoury, Stuart P Littlefair, Thomas R. Marsh, Vik S Dhillon, S. G. Parsons, C. M. Copperwheat, D. Steeghs

Research output: Contribution to journal › Article › Research › peer-review

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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 K ₂= 378 ± 6kms ^-1, and its projected rotational velocity to be vsini= 125 ± 7kms ^-1. Using these parameters and Monte Carlo techniques, we obtain masses of M ₁= 0.79 ± 0.05 M _⊙ for the white dwarf primary and M ₂= 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.

Original language	English
Pages (from-to)	469-477
Number of pages	9
Journal	Monthly Notices of the Royal Astronomical Society
Volume	422
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2012.20625.x
Publication status	Published - May 2012
Externally published	Yes

Keywords

Binaries: close
Binaries: eclipsing
Novae, cataclysmic variables
Stars: dwarf novae
Stars: evolution
Stars: low mass

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10.1111/j.1365-2966.2012.20625.x

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title = "A radial velocity study of CTCV J1300-3052",

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 K 2= 378 ± 6kms -1, and its projected rotational velocity to be vsini= 125 ± 7kms -1. Using these parameters and Monte Carlo techniques, we obtain masses of M 1= 0.79 ± 0.05 M ⊙ for the white dwarf primary and M 2= 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.",

keywords = "Binaries: close, Binaries: eclipsing, Novae, cataclysmic variables, Stars: dwarf novae, Stars: evolution, Stars: low mass",

author = "Savoury, {C. D J} and Littlefair, {Stuart P} and Marsh, {Thomas R.} and Dhillon, {Vik S} and Parsons, {S. G.} and Copperwheat, {C. M.} and D. Steeghs",

year = "2012",

month = may,

doi = "10.1111/j.1365-2966.2012.20625.x",

language = "English",

volume = "422",

pages = "469--477",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

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TY - JOUR

T1 - A radial velocity study of CTCV J1300-3052

AU - Savoury, C. D J

AU - Littlefair, Stuart P

AU - Marsh, Thomas R.

AU - Dhillon, Vik S

AU - Parsons, S. G.

AU - Copperwheat, C. M.

AU - Steeghs, D.

PY - 2012/5

Y1 - 2012/5

N2 - 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 K 2= 378 ± 6kms -1, and its projected rotational velocity to be vsini= 125 ± 7kms -1. Using these parameters and Monte Carlo techniques, we obtain masses of M 1= 0.79 ± 0.05 M ⊙ for the white dwarf primary and M 2= 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.

AB - 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 K 2= 378 ± 6kms -1, and its projected rotational velocity to be vsini= 125 ± 7kms -1. Using these parameters and Monte Carlo techniques, we obtain masses of M 1= 0.79 ± 0.05 M ⊙ for the white dwarf primary and M 2= 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.

KW - Binaries: close

KW - Binaries: eclipsing

KW - Novae, cataclysmic variables

KW - Stars: dwarf novae

KW - Stars: evolution

KW - Stars: low mass

UR - http://www.scopus.com/inward/record.url?scp=84859826704&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2966.2012.20625.x

DO - 10.1111/j.1365-2966.2012.20625.x

M3 - Article

AN - SCOPUS:84859826704

VL - 422

SP - 469

EP - 477

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -

A radial velocity study of CTCV J1300-3052

Abstract

Keywords

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