20 citations · 21 across the 15 of their papers we have counts for
7 papers · 1 filter
Tidally perturbed pulsations in OO Dra
Niveditha Parthasarathy, Mikhail Kovalev, Randa Asa'd
We perform a pulsation analysis of OO Dra using Light Curve data from TESS and present the first identification of six dipole modes as doublets from the primary star in OO Dra. The…
CW Cas: A solar-type contact binary system with an unseen third companion in a hierarchical quadruple system
Azizbek Matekov, Liying Zhu, Linjia Li +11
We present a comprehensive multiband photometric and spectroscopic study of the G-type binary CW Cas whose parameters have not been well determined. Our double-lined spectroscopic…
First double red giant Algol system with active mass transfer
Mikhail Kovalev, Hailiang Chen, Sufen Guo +7
Double red giant stars are very important for studies of the stability of mass transfer, common-envelope evolution, and the formation of double white dwarfs with short orbital peri…
Search for double-line spectroscopic binaries in RAVE survey
Mikhail Kovalev
I present a study for double-line spectroscopic binaries content in RAVE DR6 spectra, using composite spectral model. Three complementing selections found 2813 composite spectra, b…
Shortest period for outer orbit in compact hierarchical triple? Discovery of SB1 around V0885 Per
Mikhail Kovalev
I present a discovery of SB1 in the LAMOST-MRS spectra of eclipsing contact binary V 885 Per. Spectroscopic orbit has period only day, which will make it shortest known ou…
Spectroscopic orbits for three SB2s and one hierarchical triple using SALT data
Mikhail Kovalev, Alexey Kniazev, Oleg Malkov
We confirmed four spectroscopic binary candidates using new observations obtained with SALT. Three SB2 systems (HD 20784, HD 43519A, HD 62153A) exhibit circular orbits with periods…
Identification of false positive double-lined spectroscopic binaries in LAMOST-MRS data due to moonlight contamination
Zhoulin Wang, Mikhail Kovalev, Jianping Xiong +2
We present a method for identifying false positive double-lined spectroscopic binary (SB2) candidates by analysing medium-resolution survey spectra from the Large Sky Area Multi-Ob…