Updated study of the quintuple system V994 Herculis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10332009" target="_blank" >RIV/00216208:11320/16:10332009 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201628153" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201628153</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201628153" target="_blank" >10.1051/0004-6361/201628153</a>
Alternative languages
Result language
angličtina
Original language name
Updated study of the quintuple system V994 Herculis
Original language description
Aims. We present a new updated study of the unique quintuple system of two eclipsing binaries, V994 Her. Methods. Based on new obtained photometric observations, we analysed the period variations of the two eclipsing pairs of V994 Her. Results. We found that the orbital period of the two eclipsing binaries around a common barycenter is about 2.9 yrs instead of the original period, which was reported as 6.3 yrs. Moreover, the system now seems to be close to coplanar (i approximate to 84 degrees), and we also revised the individual masses of all four eclipsing components. The two eclipsing pairs show slow apsidal motion with periods of about 116 and 111 yrs, respectively. Pairs A and B are distant by about 17 mas on the sky, which is encouraging for observers because an interferometric detection may be possible in the next years. Conclusions. All of these results are based on the photometric observations of V994 Her and its detailed analysis of the period changes of the two eclipsing binaries.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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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
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy and Astrophysics [online]
ISSN
1432-0746
e-ISSN
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Volume of the periodical
588
Issue of the periodical within the volume
duben
Country of publishing house
PL - POLAND
Number of pages
4
Pages from-to
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UT code for WoS article
000373207800133
EID of the result in the Scopus database
2-s2.0-84964316539