ASAS J071404+7004.3 – a close, bright nova-like cataclysmic variable with gusty winds

Inight, K; Gänsicke, BT; Blondel, D; Boyd, D; Ashley, RP; Knigge, C; Long, KS; Marsh, TR; McCleery, J; Scaringi, S; Steeghs, D; Thorstensen, JR; Vanmunster, T; Wheatley, PJ

doi:10.1093/mnras/stab3662

ASAS J071404+7004.3 – a close, bright nova-like cataclysmic variable with gusty winds

Inight, K; Gänsicke, BT; Blondel, D; Boyd, D; Ashley, RP; Knigge, C; Long, KS; Marsh, TR; McCleery, J; Scaringi, S; Steeghs, D; Thorstensen, JR; Vanmunster, T; Wheatley, PJ

Authors

K Inight

BT Gänsicke

D Blondel

D Boyd

RP Ashley

C Knigge

KS Long

TR Marsh

J McCleery

Dr Simone Scaringi simone.scaringi@durham.ac.uk
Associate Professor

D Steeghs

JR Thorstensen

T Vanmunster

PJ Wheatley

Abstract

Despite being bright (V 11.8) and nearby (d = 212 pc) ASAS J071404+7004.3 has only recently been identified as a nova-like cataclysmic variable. We present time-resolved optical spectroscopy obtained at the Isaac Newton and the Hiltner and McGrawHill Telescopes, together with Swift X-ray and ultraviolet observations. We combined these with TESS photometry and find a period of 3.28 h and a mass transfer rate of 4–9 × 10−9 M yr−1 . Historical photometry shows at least one low state establishing the system as a VY Scl star. Our high-cadence spectroscopy also revealed rapidly changing winds emanating from the accretion disc. We have modelled these using the Monte Carlo PYTHON code and shown that all the emission lines could emanate from the wind – which would explain the lack of double-peaked lines in such systems. In passing, we discuss the effect of variability on the position of cataclysmic variables in the Gaia Hertzsprung–Russell diagram.

Citation

Inight, K., Gänsicke, B., Blondel, D., Boyd, D., Ashley, R., Knigge, C., …Wheatley, P. (2021). ASAS J071404+7004.3 – a close, bright nova-like cataclysmic variable with gusty winds. Monthly Notices of the Royal Astronomical Society, 510(3), 3605-3621. https://doi.org/10.1093/mnras/stab3662

Journal Article Type	Article
Acceptance Date	Dec 13, 2021
Online Publication Date	Dec 16, 2021
Publication Date	2021
Deposit Date	May 31, 2022
Publicly Available Date	Jun 14, 2022
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	510
Issue	3
Pages	3605-3621
DOI	https://doi.org/10.1093/mnras/stab3662

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This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. ©: 2021 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.