The triple eccentric systems V974 Cyg, RU Mon, and V456 Oph
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00510345" target="_blank" >RIV/68378271:_____/17:00510345 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/17:10367922
Result on the web
<a href="https://doi.org/10.32023/0001-5237/67.3.4" target="_blank" >https://doi.org/10.32023/0001-5237/67.3.4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.32023/0001-5237/67.3.4" target="_blank" >10.32023/0001-5237/67.3.4</a>
Alternative languages
Result language
angličtina
Original language name
The triple eccentric systems V974 Cyg, RU Mon, and V456 Oph
Original language description
We present results of a long-term program for timing the eclipses of eccentric eclipsing binaries. About 40 new precise mid-eclipse times were measured for the eclipsing binary V974 Cyg, RU Mon and V456 Oph. Based on current O-C diagrams, we found in all cases that times of minima besides the typical apsidal motion show additional cyclical changes caused very probably by the third bodies orbiting the eclipsing pair. The periods of apsidal motion are 1470 yr, 361 yr and 22.6 yr, respectively. The period of V456 Oph this is one of the shortest known apsidal-motion periods. The relativistic contributions to the total apsidal-motion rate are significant for V974 Cyg (about 30%) and negligible for RU Mon and V456 Oph (1-2.5%). The third-body orbital periods are relatively short: 30.6 yr, 59.8 yr and 7.4 yr, and their minimal masses are 0.40 M-circle dot, 1.6 M-circle dot, and 0.27 M-circle dot, respectively.
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta Astronomica
ISSN
0001-5237
e-ISSN
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Volume of the periodical
67
Issue of the periodical within the volume
3
Country of publishing house
PL - POLAND
Number of pages
15
Pages from-to
257-271
UT code for WoS article
000417556300004
EID of the result in the Scopus database
2-s2.0-85035337331