First Doppler imaging of the RS CVn binary FF UMa

Autor:	T. Kılıçoğlu, I. Özavcı, Hakan Volkan Şenavci, E. Bahar
Rok vydání:	2020
Předmět:	Physics Nuclear magnetic resonance Astrophysics::Solar and Stellar Astrophysics Binary number Astronomy and Astrophysics Astrophysics::Earth and Planetary Astrophysics Doppler imaging Astrophysics::Galaxy Astrophysics
Zdroj:	Contributions of the Astronomical Observatory Skalnaté Pleso. 50
ISSN:	1336-0337 1335-1842
Popis:	We present the first Doppler Imaging (DI) study of the chromospherically active RS CVn binary FF Ursae Majoris. New mid-resolution (R similar to 13500) time series spectral data were acquired using the echelle spectrograph attached to the 0.4-m Kreiken Telescope at the Ankara University Kreiken Observatory. We applied a spectral subtraction technique to the H ff line to reveal the phase behavior of the chromospheric activity of the system. The results derived from DI and spectral subtraction analyses show that both components exhibit photospheric and chromospheric activity. The time series spectral data also enable us to obtain the most recent radial velocity curve of the system and re-determine the physical parameters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db1a333af50598585ee60fbaa69f2068 https://doi.org/10.31577/caosp.2020.50.2.594 Zobrazit plný text záznamu