Eight new 2+2 doubly eclipsing quadruple systems detected
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00587836" target="_blank" >RIV/67985815:_____/24:00587836 - isvavai.cz</a>
Alternative codes found
RIV/47813059:19630/24:A0000392 RIV/00216208:11320/24:10492998
Result on the web
<a href="https://hdl.handle.net/11104/0354953" target="_blank" >https://hdl.handle.net/11104/0354953</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202450400" target="_blank" >10.1051/0004-6361/202450400</a>
Alternative languages
Result language
angličtina
Original language name
Eight new 2+2 doubly eclipsing quadruple systems detected
Original language description
We studied eight new doubly eclipsing stellar systems. We found that they are all rare examples of quadruple systems of 2 + 2 architecture, where both inner pairs are eclipsing binaries. Until now, such a configuration had only been proven for dozens of systems on the whole sky. We enlarged this rare group of systems with four stars in the Small Magellanic Cloud (SMC) galaxy and four brighter stars on the northern sky. These analysed systems are the following: OGLE SMC-ECL-2339 (both eclipsing periods of 0.72884 days and 3.39576 days, mutual orbital period of 5.95 years), OGLE SMC-ECL-3075 (1.35890 d, 2.41587 d, 9.75 yr), OGLE SMC-ECL-4756 (0.91773 d, 2.06047 d, 4.34 yr, OGLE SMC-ECL-6093 (0.90193 d, 2.03033 d, 31.2 yr), GSC 01949-01700 (0.24058 d, 0.75834 d, 21.7 yr), ZTF J171602.61+273606.5 (0.36001 d, 4.51545 d, 19.5 yr), WISE J210935.8+390501 (0.33228 d, 3.51575 d, 1.9 yr), and V597 And (0.46770 d, 0.35250, 20.4 yr). These systems constitute a rare selection of W UMa stars among the doubly eclipsing quadruples. For all of the systems, new dedicated observations were obtained as well. V597 And is definitely the most interesting system for several reasons: (1) the system is the brightest in our sample, (2) it is a rare quintuple (2 + 2) + 1 system, and (3) it is also closest to the Sun. It yielded the predicted angular separation of the two components of 57 mas, which is probably within the detection limits for modern, high-angular-resolution techniques.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
687
Issue of the periodical within the volume
July
Country of publishing house
FR - FRANCE
Number of pages
6
Pages from-to
A6
UT code for WoS article
001262731800005
EID of the result in the Scopus database
2-s2.0-85196960532