The eclipsing binary star RZ Cas: accretion-driven variability of the multimode oscillation spectrum

DOI: 
10.1093/mnras/stx2841
Publication date: 
01/04/2018
Main author: 
Mkrtichian, D. E.
IAA authors: 
Rodríguez, E.;López-González, M. J.
Authors: 
Mkrtichian, D. E.;Lehmann, H.;Rodríguez, E.;Olson, E.;Kim, S. -L.;Kusakin, A. V.;Lee, J. W.;Youn, J. -H.;Kwon, S. -G.;López-González, M. J.;Janiashvili, E.;Tiwari, S. K.;Joshi, Santosh;Lampens, P.;Van Cauteren, P.;Glazunova, L.;Gamarova, A.;Grankin, K. N.;Rovithis-Livaniou, E.;Svoboda, P.;Uhlar, R.;Tsymbal, V.;Kokumbaeva, R.;Urushadze, T.;Kuratov, K.;Shin, H. -C.;Kang, Y. -W.;Soonthornthum, B.
Journal: 
Monthly Notices of the Royal Astronomical Society
Refereed: 
Yes
Publication type: 
Article
Volume: 
475
Pages: 
4745-4767
Abstract: 
We analysed photometric time series of the active, semidetached Algol-type system RZ Cas obtained in 1999-2009, in order to search for seasonal and short-term variations in the oscillation spectrum of RZ Cas A. The orbital period shows ±1 s cyclic variations on time-scales of 6-9 years. We detected six low-degree p-mode oscillations with periods between 22.3 and 26.22 min and obtained safe mode identifications using the periodic spatial filter method. The amplitudes and frequencies of all modes vary.
Database: 
ADS
SCOPUS
URL: 
https://ui.adsabs.harvard.edu/#abs/2018MNRAS.475.4745M/abstract
ADS Bibcode: 
2018MNRAS.475.4745M
Keywords: 
binaries: eclipsing;stars: oscillations