Improved model of the triple system V746 Cassiopeiae that has a bipolar magnetic field associated with the tertiary

0494957 - ASÚ 2019 RIV FR eng J - Článek v odborném periodiku
Harmanec, P. - Broz, M. - Mayer, P. - Zasche, P. - Kotková, Lenka - Nemravová, J. - Dukes, E. C. - Korčáková, D. - Šlechta, Miroslav - Kiran, E. - Křiček, R. - Juryšek, Jakub
Improved model of the triple system V746 Cassiopeiae that has a bipolar magnetic field associated with the tertiary.
Astronomy & Astrophysics. Roč. 609, January (2018), č. článku A5. ISSN 0004-6361. E-ISSN 1432-0746
Grant ostatní: GA ČR(CZ) GA15-02112S
Institucionální podpora: RVO:67985815 ; RVO:68378271
Klíčová slova: pulsating b stars * eclipsing binaries * rotational modulation
Obor OECD: Astronomy (including astrophysics,space science); Astronomy (including astrophysics,space science) (FZU-D)
Impakt faktor: 6.209, rok: 2018

V746 Cas is known to be a triple system composed of a close binary with an alternatively reported period of either 25.(d)4 or 27.(d)8 and a distant third component in a 170 yr (62 000 d) orbit. The object was also reported to exhibit multiperiodic light variations with periods from 0.(d)83 to 2.(d)50, on the basis of which it was classified as a slowly pulsating B star. Interest in further investigation of this system was raised by the recent detection of a variable magnetic field. Analysing spectra from four instruments, earlier published radial velocities, and several sets of photometric observations.
Trvalý link: http://hdl.handle.net/11104/0288009