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Hunting for eclipses: high-speed observations of cataclysmic variables

Hardy, L.K.; McAllister, M.J.; Dhillon, V.S.; Littlefair, S.P.; Bours, M.C.P.; Breedt, E.; Butterley, T.; Chakpor, A.; Irawati, P.; Kerry, P.; Marsh, T.R.; Parsons, S.G.; Savoury, C.D.J.; Wilson, R.W.; Woudt, P.A.

Hunting for eclipses: high-speed observations of cataclysmic variables Thumbnail


L.K. Hardy

M.J. McAllister

V.S. Dhillon

S.P. Littlefair

M.C.P. Bours

E. Breedt

A. Chakpor

P. Irawati

P. Kerry

T.R. Marsh

S.G. Parsons

C.D.J. Savoury

P.A. Woudt


We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. Thirteen of these eclipsing systems are newly discovered. For all 47 eclipsing systems, we show high cadence (1–20 s) light curves obtained with the high-speed cameras ULTRACAM and ULTRASPEC. We provide new or refined ephemerides, and supply mid-eclipse times for all observed eclipses. We assess the potential for light-curve modelling of all 47 eclipsing systems to determine their system parameters, finding 20 systems that appear to be suitable for future study. Systems of particular interest include V713 Cep, in which we observed a temporary switching-off of accretion; and ASASSN-14mv and CSS111019:233313−155744, which both have orbital periods well below the CV period minimum. The short orbital periods and light-curve shapes suggest that they may be double degenerate (AM CVn) systems or CVs with evolved donor stars.


Hardy, L., McAllister, M., Dhillon, V., Littlefair, S., Bours, M., Breedt, E., …Woudt, P. (2017). Hunting for eclipses: high-speed observations of cataclysmic variables. Monthly Notices of the Royal Astronomical Society, 465(4), 4968-4984.

Journal Article Type Article
Acceptance Date Nov 22, 2016
Online Publication Date Nov 23, 2016
Publication Date Mar 11, 2017
Deposit Date Jul 25, 2017
Publicly Available Date Jul 25, 2017
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Royal Astronomical Society
Peer Reviewed Peer Reviewed
Volume 465
Issue 4
Pages 4968-4984
Related Public URLs


Published Journal Article (1.4 Mb)

Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society ©: 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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