BU Canis Minoris - the most compact known flat doubly eclipsing quadruple system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00580640" target="_blank" >RIV/68378271:_____/23:00580640 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/23:10475674
Result on the web
<a href="https://doi.org/10.1093/mnras/stad2015" target="_blank" >https://doi.org/10.1093/mnras/stad2015</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stad2015" target="_blank" >10.1093/mnras/stad2015</a>
Alternative languages
Result language
angličtina
Original language name
BU Canis Minoris - the most compact known flat doubly eclipsing quadruple system
Original language description
We have found that the 2+2 quadruple star system BU CMi is currently the most compact quadruple system known, with an extremely short outer period of only 121 d. The previous record holder was TIC 219006972 (Kostov et al.), with a period of 168 d. The quadruple nature of BU CMi was established by Volkov, Kravtsova & Chochol, but they misidentified the outer period as 6.6 yr. BU CMi contains two eclipsing binaries (EBs), each with a period near 3 d, and a substantial eccentricity of ≃0.22. All four stars are within ~0.1 M⊙ of 2.4 M⊙. Both binaries exhibit dynamically driven apsidal motion with fairly short apsidal periods of ≃30 yr, due to the short outer orbital period. The outer period of 121 d is found both from the dynamical perturbations, with this period imprinted on the eclipse timing variations curve of each EB by the other binary, and by modelling the complex line profiles in a collection of spectra.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
524
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
19
Pages from-to
4220-4238
UT code for WoS article
001050347200024
EID of the result in the Scopus database
2-s2.0-85168139324