Structure of accretion flows in the nova-like cataclysmic variable RW Tri

0536877 - ASÚ 2021 RIV GB eng J - Článek v odborném periodiku
Subebekova, G. - Zharikov, S.V. - Tovmassian, G. - Neustroev, V. - Wolf, M. - Hernandez, M.-S. - Kučáková, Hana - Khokhlov, S.
Structure of accretion flows in the nova-like cataclysmic variable RW Tri.
Monthly Notices of the Royal Astronomical Society. Roč. 497, č. 2 (2020), s. 1475-1487. ISSN 0035-8711. E-ISSN 1365-2966
Institucionální podpora: RVO:67985815
Klíčová slova: binaries * spectroscopic * cataclysmic variables
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 5.287, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1093/mnras/staa2091

We obtained photometric observations of the nova-like (NL) cataclysmic variable RW Tri and gathered all available AAVSO and other data from the literature. We determined the system parameters and found their uncertainties using the code developed by us to model the light curves of binary systems. New time-resolved optical spectroscopic observations of RW Tri were also obtained to study the properties of emission features produced by the system. The usual interpretation of the single-peaked emission lines in NL systems is related to the bi-conical wind from the accretion disc's inner part. However, we found that the Ha emission profile is comprised of two components with different widths. We argue that the narrow component originates from the irradiated surface of the secondary, while the broader component's source is an extended, low-velocity region in the outskirts of the accretion disc, located opposite to the collision point of the accretion stream and the disc. It appears to be a common feature for long-period NL systems - a point we discuss.
Trvalý link: http://hdl.handle.net/11104/0314663