SIMBAD references

2020MNRAS.491..344R - Mon. Not. R. Astron. Soc., 491, 344-355 (2020/January-1)

Analysis of spiral structure in the accretion disc of the nova-like cataclysmic variable EC21178-5417.

RUIZ-CARMONA R., KHANGALE Z.N., WOUDT P.A. and GROOT P.J.

Abstract (from CDS):

We present an extensive Doppler tomography study of the eclipsing nova-like EC21178-5417, which exhibits the classic accretion disc signature in the form of double-peak emission lines in its spectrum. Doppler tomograms confirm the presence of a strong, two-armed spiral pattern visible in the majority of the spectral lines studied. This makes EC21178-5417 one of the very few nova-likes that show spiral structure in their discs. We also report night-to-night changes in the position and relative strength of the spiral arms, revealing fluctuations on the conditions in the accretion disc.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion - accretion discs - shock waves - stars: individual: EC21178-5417 - novae - cataclysmic variables

Simbad objects: 12

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