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

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arxiv 2109.14514 v2 pith:AYRTK2BI submitted 2021-09-29 astro-ph.SR astro-ph.HE

classification astro-ph.SRastro-ph.HE
keywords cataclysmictextitasasbrightj071404linesnova-likephotometry
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Despite being bright ($V=12$) 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 Telescope together with $\textit{Swift}$ X-ray and ultraviolet observations. We combined these with $\textit{TESS}$ photometry and find a period of 3.28h and a mass transfer rate of $4-9 \times 10^{-9} M_{sun}/yr$. 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 $\textit{Gaia}$ Hertzsprung-Russell diagram.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. XMM-Newton follow-up of two eROSITA X-ray binary candidates

    astro-ph.HE 2025-07 conditional novelty 4.0 of 10

    Two eROSITA X-ray binary candidates are reclassified: J061331 as a chromospherically active M-type subgiant and J161201 as a novalike cataclysmic variable with a tentative 4.802-hour orbital period.

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