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V994 Herculis: a unique triply eclipsing sextuple star system
- 1.0570832 - FZÚ 2024 RIV GB eng J - Journal Article
Zasche, P. - Borkovits, T. - Jayaraman, R. - Mašek, Martin … Total 26 authors
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
R&D Projects: GA MŠMT LTT17006; GA MŠMT EF16_013/0001403; GA MŠMT(CZ) EF18_046/0016007
Research Infrastructure: CTA-CZ II - 90105
Institutional support: RVO:68378271
Keywords : binary stars * eclipsing binaries * V994 Her
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 4.8, year: 2022
Method of publishing: 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.
Permanent Link: https://hdl.handle.net/11104/0342169
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