| ŠMELCER, Ladislav, Marek WOLF, Hana KUČÁKOVÁ, Petr ZASCHE, Jan KÁRA, Kamil HORNOCH, Miloslav ZEJDA and Reinhold Friedrich AUER. A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity. Monthly Notices of the Royal Astronomical Society. Oxford University Press, 2023, vol. 520, No 1, p. 353-363. ISSN 0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stad053. |
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@article{2267157,
author = {Šmelcer, Ladislav and Wolf, Marek and Kučáková, Hana and Zasche, Petr and Kára, Jan and Hornoch, Kamil and Zejda, Miloslav and Auer, Reinhold Friedrich},
article_number = {1},
doi = {http://dx.doi.org/10.1093/mnras/stad053},
keywords = {stars: activity; binaries: close; binaries: eclipsing; stars: fundamental parameters; stars: individual: NSVS 7453183; stars: low-mass;},
language = {eng},
issn = {0035-8711},
journal = {Monthly Notices of the Royal Astronomical Society},
title = {A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity},
url = {https://doi.org/10.1093/mnras/stad053},
volume = {520},
year = {2023}
}
TY - JOUR
ID - 2267157
AU - Šmelcer, Ladislav - Wolf, Marek - Kučáková, Hana - Zasche, Petr - Kára, Jan - Hornoch, Kamil - Zejda, Miloslav - Auer, Reinhold Friedrich
PY - 2023
TI - A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity
JF - Monthly Notices of the Royal Astronomical Society
VL - 520
IS - 1
SP - 353-363
EP - 353-363
PB - Oxford University Press
SN - 00358711
KW - stars: activity
KW - binaries: close
KW - binaries: eclipsing
KW - stars: fundamental parameters
KW - stars: individual: NSVS 7453183
KW - stars: low-mass;
UR - https://doi.org/10.1093/mnras/stad053
N2 - The VRC light curves were regularly measured for the eclipsing binary NSVS 7453183 as a part of our long-term observational project for studying of low-mass eclipsing binaries with a short orbital period and surface activity. The TESS light curve solution in PHOEBE results to the detached configuration, where the temperature of primary component was adopted to T1 = 4300 K according to the SED approximation. It gives us T2 = 4080 ± 100 K for the secondary component. The spectral type of the primary component was estimated to be K6, and the photometric mass ratio was derived q = 0.86. We confirm presence of the third body in this system, a stellar companion with a minimal mass 0.33 M⊙ orbiting the eclipsing pair with a short period about 425 days, and propose the next, fourth body with a longer orbiting period of about 12 years, probably a brown dwarf with the minimal mass of 50 MJup. The hierarchical structure ((1+1)+1) + 1 of this quadruple system is assumed. Characteristics and temporal variations of the dark region on the surface of the primary component were estimated. The average migration speed of about 10° per month was found during years 2020-2022.
ER -
ŠMELCER, Ladislav, Marek WOLF, Hana KUČÁKOVÁ, Petr ZASCHE, Jan KÁRA, Kamil HORNOCH, Miloslav ZEJDA and Reinhold Friedrich AUER. A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford University Press, 2023, vol.~520, No~1, p.~353-363. ISSN~0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stad053.
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