Detail publikace

Possible substellar companions in low-mass eclipsing binaries: GU Boo and YY Gem

WOLF, M. KUČÁKOVÁ, H. ZASCHE, P. VRAŠTIL, J. HOŇKOVÁ, K. HORNOCH, K. LEHKÝ, M. MAŠEK, M. ŠMELCER, L. TYLŠAR, M. NOVÁK, R. ČERVINKA, L. BĚLÍK, M.

Originální název

Possible substellar companions in low-mass eclipsing binaries: GU Boo and YY Gem

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

We present the next results of our long-term observational project to analyze the variations in the orbital periods of low-mass eclipsing binaries. About 70 new precise mid-eclipse times recorded with a CCD were obtained for two eclipsing binaries with short orbital periods. 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 or improved the short orbital periods of possible third bodies of 11 and 54 years for these low-mass binaries, respectively. We calculated that the minimum masses of the third components are close to 50 MJup, which corresponds to the mass of brown dwarfs. The multiplicity of these systems also plays an important role in the precise determination of their physical parameters.

Klíčová slova

binaries; eclipsing – stars; late-type – stars; individual; (GU Boo, YY Gem) – stars; fundamental parameters

Autoři

WOLF, M.; KUČÁKOVÁ, H.; ZASCHE, P.; VRAŠTIL, J.; HOŇKOVÁ, K.; HORNOCH, K.; LEHKÝ, M.; MAŠEK, M.; ŠMELCER, L.; TYLŠAR, M.; NOVÁK, R.; ČERVINKA, L.; BĚLÍK, M.

Vydáno

30. 11. 2018

Nakladatel

European Southern Observatory, EDP Sciences

ISSN

0004-6361

Periodikum

ASTRONOMY & ASTROPHYSICS

Ročník

619

Číslo

2018

Stát

Francouzská republika

Strany od

1

Strany do

7

Strany počet

7

URL

https://doi.org/10.1051/0004-6361/201833708

BibTex

@article{BUT150345,
  author="Marek {Wolf} and Hana {Kučáková} and Petr {Zasche} and Jan {Vraštil} and Kateřina {Hoňková} and Kamil {Hornoch} and Martin {Lehký} and Martin {Mašek} and Ladislav {Šmelcer} and Martin {Tylšar} and Rudolf {Novák} and Ladislav {Červinka} and Marcel {Bělík}",
  title="Possible substellar companions in low-mass eclipsing binaries: GU Boo and YY Gem",
  journal="ASTRONOMY & ASTROPHYSICS",
  year="2018",
  volume="619",
  number="2018",
  pages="1--7",
  doi="10.1051/0004-6361/201833708",
  issn="0004-6361",
  url="https://doi.org/10.1051/0004-6361/201833708"
}