Detection of seven 2+2 doubly eclipsing quadruple systems

0581065 - FZÚ 2024 RIV FR eng J - Journal Article
Zasche, P. - Henzl, Z. - Mašek, Martin - Uhlář, R. - Kára, J. - Merc, J. - Kučáková, Hana
Detection of seven 2+2 doubly eclipsing quadruple systems.
Astronomy & Astrophysics. Roč. 675, July (2023), č. článku A113. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA MŠMT LTT18004; GA MŠMT EF16_013/0001402; GA MŠMT(CZ) EF18_046/0016010; GA MŠMT LTT17006; GA MŠMT EF16_013/0001403; GA MŠMT(CZ) EF18_046/0016007
Research Infrastructure: AUGER-CZ III - 90232; CTA-CZ III - 90247
Institutional support: RVO:68378271 ; RVO:67985815
Keywords : Solar and Stellar Astrophysics * eclipsing binaries * stars
OECD category: Astronomy (including astrophysics,space science); Astronomy (including astrophysics,space science) (ASU-R)
Impact factor: 6.5, year: 2022
Method of publishing: Open access

In this work, we study a heterogeneous group of seven stellar systems for the first time. Despite their different distances or spectral types, all of them belong to a very rare group of quadruple systems of 2+2 architecture, where both of the inner pairs harbor eclipsing binaries. These systems are: ASASSN-V J102911.57−522413.6 (inner periods 0.57272, and 3.79027 days), V1037 Her (0.78758 and 5.80348 days), WISE J181904.2+241243 (0.36713 and 0.41942 days), V2894 Cyg (2.57434 and 1.30579 days), NSVS 5725040 (1.79368 and 0.76794 days), WISE J210230.8+610816 (1.84324 and 0.57159 days), and ZTF J220518.78+592642.1 (2.79572 and 3.34615 days). Their outer mutual periods are: 9.3, 25.4, 18.7, 27.5, 2.6, 2.2, and 14.0 yr, respectively. These outer periodicities were derived using longer time span of photometric observations of these systems and analysing their period changes of both inner pairs via ETVs (eclipse-timing variations).
Permanent Link: https://hdl.handle.net/11104/0349634