Possible substellar companions in low-mass eclipsing binaries:
GU Bootis and YY Geminorum

J 2018

Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum

WOLF, M., Hana KUČÁKOVÁ, P. ZASCHE, J. VRAŠTIL, K. HOŇKOVÁ et. al.

Základní údaje

Originální název

Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum

Autoři

WOLF, M., Hana KUČÁKOVÁ (203 Česká republika, garant, domácí), P. ZASCHE, J. VRAŠTIL, K. HOŇKOVÁ, K. HORNOCH, M. LEHKÝ, M. MAŠEK, L. ŠMELCER, M. TYLŠAR, R. NOVÁK, L. ČERVINKA a M. BĚLÍK

Vydání

Astronomy & Astrophysics, 2018, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.378 v roce 2014

Kód RIV

RIV/47813059:19240/18:A0000356

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

DOI

http://dx.doi.org/10.1051/0004-6361/201833708

UT WoS

000452389400002

Klíčová slova anglicky

binaries: eclipsing; stars: late-type; stars: individual: GU Bootis; stars: individual: YY Geminorum; stars: fundamental parameters

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 5. 4. 2019 16:11, RNDr. Jan Hladík, Ph.D.

Anotace

V originále

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: GU Boo (P = 0.^{d}49) and YY Gem (0.^{d}81). 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 M_{Jup}, 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.

Citovat

WOLF, M., Hana KUČÁKOVÁ, P. ZASCHE, J. VRAŠTIL, K. HOŇKOVÁ, K. HORNOCH, M. LEHKÝ, M. MAŠEK, L. ŠMELCER, M. TYLŠAR, R. NOVÁK, L. ČERVINKA a M. BĚLÍK. Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum. Astronomy & Astrophysics. 2018, roč. 620, December, s. "A72-1"-"A72-7", 7 s. ISSN 0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201833708.

@article{30252,
   author = {Wolf, M. and Kučáková, Hana and Zasche, P. and Vraštil, J. and Hoňková, K. and Hornoch, K. and Lehký, M. and Mašek, M. and Šmelcer, L. and Tylšar, M. and Novák, R. and Červinka, L. and Bělík, M.},
   article_number = {December},
   doi = {http://dx.doi.org/10.1051/0004-6361/201833708},
   keywords = {binaries: eclipsing; stars: late-type; stars: individual: GU Bootis; stars: individual: YY Geminorum; stars: fundamental parameters},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy & Astrophysics},
   title = {Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum},
   url = {https://www.aanda.org/articles/aa/abs/2018/12/aa33708-18/aa33708-18.html},
   volume = {620},
   year = {2018}
}

TY  - JOUR
ID  - 30252
AU  - Wolf, M. - Kučáková, Hana - Zasche, P. - Vraštil, J. - Hoňková, K. - Hornoch, K. - Lehký, M. - Mašek, M. - Šmelcer, L. - Tylšar, M. - Novák, R. - Červinka, L. - Bělík, M.
PY  - 2018
TI  - Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum
JF  - Astronomy & Astrophysics
VL  - 620
IS  - December
SP  - "A72-1"-"A72-7"
EP  - "A72-1"-"A72-7"
SN  - 00046361
KW  - binaries: eclipsing
KW  - stars: late-type
KW  - stars: individual: GU Bootis
KW  - stars: individual: YY Geminorum
KW  - stars: fundamental parameters
UR  - https://www.aanda.org/articles/aa/abs/2018/12/aa33708-18/aa33708-18.html
L2  - https://www.aanda.org/articles/aa/abs/2018/12/aa33708-18/aa33708-18.html
N2  - 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: GU Boo (P = 0.^{d}49) and YY Gem (0.^{d}81). 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 M_{Jup}, 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.
ER  -

WOLF, M., Hana KUČÁKOVÁ, P. ZASCHE, J. VRAŠTIL, K. HOŇKOVÁ, K. HORNOCH, M. LEHKÝ, M. MAŠEK, L. ŠMELCER, M. TYLŠAR, R. NOVÁK, L. ČERVINKA a M. BĚLÍK. Possible substellar companions in low-mass eclipsing binaries: GU Bootis and YY Geminorum. \textit{Astronomy \&{} Astrophysics}. 2018, roč.~620, December, s.~''A72-1''-''A72-7'', 7 s. ISSN~0004-6361. Dostupné z: https://dx.doi.org/10.1051/0004-6361/201833708.

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