V994 Herculis: a unique triply eclipsing sextuple star system

0570832 - FZÚ 2024 RIV GB eng J - Článek v odborném periodiku
Zasche, P. - Borkovits, T. - Jayaraman, R. - Mašek, Martin … celkem 26 autorů
V994 Herculis: a unique triply eclipsing sextuple star system.
Monthly Notices of the Royal Astronomical Society. Roč. 520, č. 2 (2023), s. 3127-3142. ISSN 0035-8711. E-ISSN 1365-2966
Grant CEP: GA MŠMT LTT17006; GA MŠMT EF16_013/0001403; GA MŠMT(CZ) EF18_046/0016007
Výzkumná infrastruktura: CTA-CZ II - 90105
Institucionální podpora: RVO:68378271
Klíčová slova: binary stars * eclipsing binaries * V994 Her
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 4.8, rok: 2022
Způsob publikování: Open access

We report the discovery with the Transiting Exoplanet Survey Satellite (TESS) of a third set of eclipses from V994 Herculis (V994 Her, TIC 424508303), previously only known as a doubly eclipsing system. The key implication of this discovery and our analyses is that V994 Her is the second fully characterized (2+2) + 2 sextuple system, in which all three binaries eclipse. In this work, we use a combination of ground-based observations and TESS data to analyse the eclipses of binaries A and B in order to update the parameters of the inner quadruple’s orbit (with a derived period of 1062 ± 2 d). The eclipses of binary C that were detected in the TESS data were also found in older ground-based observations, as well as in more recently obtained observations.
Trvalý link: https://hdl.handle.net/11104/0342169