Possible companions in low-mass eclipsing binaries: V380 Dra,
BX Tri, and V642 Vir

J 2020

Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir

WOLF, M., Hana KUČÁKOVÁ, P. ZASCHE, L. SMELCER, K. HORNOCH et. al.

Basic information

Original name

Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir

Authors

WOLF, M., Hana KUČÁKOVÁ (203 Czech Republic, belonging to the institution), P. ZASCHE, L. SMELCER, K. HORNOCH, K. HONKOVA, Jakub JURYŠEK (203 Czech Republic), M. MASEK and M. LEHKY

Edition

Contributions of the Astronomical Observatory Skalnaté pleso, 2020, 1335-1842

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Slovakia

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

RIV identification code

RIV/47813059:19630/20:A0000092

Organization unit

Institute of physics in Opava

DOI

http://dx.doi.org/10.31577/caosp.2020.50.2.637

UT WoS

000523574300058

Keywords in English

binaries: eclipsing; stars: late-type; stars: fundamental parameters; stars: individual (V380 Dra; BX Tri; V642 Vir)

Abstract

V originále

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.

Citovat

WOLF, M., Hana KUČÁKOVÁ, P. ZASCHE, L. SMELCER, K. HORNOCH, K. HONKOVA, Jakub JURYŠEK, M. MASEK and M. LEHKY. Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir. Contributions of the Astronomical Observatory Skalnaté pleso. 2020, vol. 50, No 2, p. 637-641. ISSN 1335-1842. Available from: https://dx.doi.org/10.31577/caosp.2020.50.2.637.

@article{49460,
   author = {Wolf, M. and Kučáková, Hana and Zasche, P. and Smelcer, L. and Hornoch, K. and Honkova, K. and Juryšek, Jakub and Masek, M. and Lehky, M.},
   article_number = {2},
   doi = {http://dx.doi.org/10.31577/caosp.2020.50.2.637},
   keywords = {binaries: eclipsing; stars: late-type; stars: fundamental parameters; stars: individual (V380 Dra; BX Tri; V642 Vir)},
   language = {eng},
   issn = {1335-1842},
   journal = {Contributions of the Astronomical Observatory Skalnaté pleso},
   title = {Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir},
   url = {http://www.astro.sk/caosp/Eedition/Abstracts/2020/Vol_50/No_2/pp637-641_abstract.html},
   volume = {50},
   year = {2020}
}

TY  - JOUR
ID  - 49460
AU  - Wolf, M. - Kučáková, Hana - Zasche, P. - Smelcer, L. - Hornoch, K. - Honkova, K. - Juryšek, Jakub - Masek, M. - Lehky, M.
PY  - 2020
TI  - Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir
JF  - Contributions of the Astronomical Observatory Skalnaté pleso
VL  - 50
IS  - 2
SP  - 637-641
EP  - 637-641
SN  - 13351842
KW  - binaries: eclipsing
KW  - stars: late-type
KW  - stars: fundamental parameters
KW  - stars: individual (V380 Dra
KW  - BX Tri
KW  - V642 Vir)
UR  - http://www.astro.sk/caosp/Eedition/Abstracts/2020/Vol_50/No_2/pp637-641_abstract.html
N2  - 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.
ER  -

WOLF, M., Hana KUČÁKOVÁ, P. ZASCHE, L. SMELCER, K. HORNOCH, K. HONKOVA, Jakub JURYŠEK, M. MASEK and M. LEHKY. Possible companions in low-mass eclipsing binaries: V380 Dra, BX Tri, and V642 Vir. \textit{Contributions of the Astronomical Observatory Skalnaté pleso}. 2020, vol.~50, No~2, p.~637-641. ISSN~1335-1842. Available from: https://dx.doi.org/10.31577/caosp.2020.50.2.637.

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