Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422470" target="_blank" >RIV/00216208:11320/20:10422470 - isvavai.cz</a>
Alternative codes found
RIV/00098639:_____/20:N0000001 RIV/47813059:19630/20:A0000092
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=GGynN-2itr" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=GGynN-2itr</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.31577/caosp.2020.50.2.637" target="_blank" >10.31577/caosp.2020.50.2.637</a>
Alternative languages
Result language
angličtina
Original language name
Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir
Original language description
We present the new results of our long-term observational project to analyze the orbital period variations of low-mass eclipsing binaries. More then 200 new precise mid-eclipse times recorded with a CCD were obtained for three eclipsing binaries with short orbital periods: V380 Dra (P = 0(d).49), BX Tri (0(d).19), and V642 Vir (0(d). 52). Observed-minus-calculated diagrams of the stars were analyzed using all reliable timings, and new parameters of the light-time effect were obtained. We derived for the first time the short orbital periods of possible third bodies of 10-20 years for these objects. We calculated that the minimum masses of the third component are close to 0.2 M-circle dot, which corresponds to the mass of M4 - M5 red dwarfs. The multiplicity of these systems also plays an important role in the precise determination of their physical parameters.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Contributions of the Astronomical Observatory Skalnate Pleso
ISSN
1335-1842
e-ISSN
—
Volume of the periodical
50
Issue of the periodical within the volume
2
Country of publishing house
SK - SLOVAKIA
Number of pages
5
Pages from-to
637-641
UT code for WoS article
000523574300058
EID of the result in the Scopus database
2-s2.0-85087059629