Detailed Information on Publication Record
2023
A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity
SMELCER, L., M. WOLF, P. ZASCHE, J. KARA, K. HORNOCH et. al.Basic information
Original name
A photometric study of NSVS 7453183: a probable quadruple system with long-term surface activity
Authors
SMELCER, L., M. WOLF, P. ZASCHE, J. KARA, K. HORNOCH, M. ZEJDA, R. F. AUER and Hana KUČÁKOVÁ (203 Czech Republic, belonging to the institution)
Edition
Monthly Notices of the Royal Astronomical Society, 2023, 0035-8711
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
RIV identification code
RIV/47813059:19630/23:A0000318
Organization unit
Institute of physics in Opava
UT WoS
000928268000005
Keywords in English
stars: activity;binaries: close;binaries: eclipsing;stars: fundamental parameters;stars: individual: NSVS 7453183;stars: low-mass
Tags
International impact, Reviewed
Změněno: 31/1/2024 12:38, Mgr. Pavlína Jalůvková
Abstract
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 T-1 = 4300K according to the SED approximation. It gives us T-2 = 4080 +/- 100K 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 0.33M(circle dot) 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 50M(Jup). 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 degrees per month was found during years 2020-2022.