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CzeV1731: The unique doubly eclipsing quadruple system
- 1.0537280 - ASÚ 2021 RIV FR eng J - Journal Article
Zasche, P. - Henzl, Z. - Lehmann, H. - Pepper, J. - Powell, B. P. - Kostov, V. B. - Barclay, T. - Wolf, M. - Kučáková, Hana - Uhlář, R. - Mašek, Martin - Palafouta, S. - Gazeas, K. - Stassun, K. - Gaudi, B. S. - Rodriguez, J. E. - Stevens, D. J.
CzeV1731: The unique doubly eclipsing quadruple system.
Astronomy & Astrophysics. Roč. 642, October (2020), č. článku A63. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA MŠMT LTT17006
Research Infrastructure: CTA-CZ - 90046
Institutional support: RVO:67985815 ; RVO:68378271
Keywords : eclipsing binaries * spectroscopic * stars: fundamental parameters
OECD category: Astronomy (including astrophysics,space science); Astronomy (including astrophysics,space science) (FZU-D)
Impact factor: 5.803, year: 2020
Method of publishing: Limited access
https://doi.org/10.1051/0004-6361/202038656
We report the discovery of the relatively bright (V=10.5 mag), doubly eclipsing 2+2 quadruple system CzeV1731. This is the third known system of its kind, in which the masses are determined for all four stars and both the inner and outer orbits are characterized. The inner eclipsing binaries are well-detached systems moving on circular orbits: pair A with period P-A=4.10843 d and pair B with P-B=4.67552 d. The inner binaries contain very similar components (q approximate to 1.0), making the whole system a so-called double twin. The stars in pair B have slightly larger luminosities and masses and pair A shows deeper eclipses. All four components are main-sequence stars of F/G spectral type. The mutual orbit of the two pairs around the system barycenter has a period of about 34 yr and an eccentricity of about 0.38. However, further observations are needed to reveal the overall architecture of the whole system, including the mutual inclinations of all orbits. This is a promising target for interferometry to detect the double at about 59 mas and Delta M-bol< 1 mag.
Permanent Link: http://hdl.handle.net/11104/0315024
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