A photometric study of NSVS 7453183: a probable quadruple
system with long-term surface activity

J 2023

A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity

ŠMELCER, Ladislav, Marek WOLF, Hana KUČÁKOVÁ, Petr ZASCHE, Jan KÁRA et. al.

Základní údaje

Originální název

A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity

Autoři

ŠMELCER, Ladislav (203 Česká republika), Marek WOLF (203 Česká republika, garant), Hana KUČÁKOVÁ (203 Česká republika), Petr ZASCHE (203 Česká republika), Jan KÁRA (203 Česká republika), Kamil HORNOCH (203 Česká republika), Miloslav ZEJDA (203 Česká republika, domácí) a Reinhold Friedrich AUER (276 Německo)

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford University Press, 2023, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.800 v roce 2022

Kód RIV

RIV/00216224:14310/23:00130441

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1093/mnras/stad053

UT WoS

000928268000005

Klíčová slova anglicky

stars: activity; binaries: close; binaries: eclipsing; stars: fundamental parameters; stars: individual: NSVS 7453183; stars: low-mass;

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 3. 2024 10:41, Mgr. Marie Šípková, DiS.

Anotace

V originále

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.

Citovat

ŠMELCER, Ladislav, Marek WOLF, Hana KUČÁKOVÁ, Petr ZASCHE, Jan KÁRA, Kamil HORNOCH, Miloslav ZEJDA a 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, roč. 520, č. 1, s. 353-363. ISSN 0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stad053.

@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 a 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, roč.~520, č.~1, s.~353-363. ISSN~0035-8711. Dostupné z: https://dx.doi.org/10.1093/mnras/stad053.

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