TESS light curves and period changes in low-mass eclipsing
binary BB Persei

J 2025

TESS light curves and period changes in low-mass eclipsing binary BB Persei

WOLF, Marek; Petr ZASCHE; Miloslav ZEJDA; Martin MASEK; Andrej MUDRAY et. al.

Základní údaje

Originální název

TESS light curves and period changes in low-mass eclipsing binary BB Persei

Autoři

WOLF, Marek; Petr ZASCHE; Miloslav ZEJDA; Martin MASEK; Andrej MUDRAY; Hana KUCAKOVA; Waldemar OGLOZA; Jaroslav MERC; Jan KARA a Vojtech DIENSTBIER

Vydání

New Astronomy, Elsevier, 2025, 1384-1076

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.100 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1016/j.newast.2025.102406

UT WoS

001454813900001

EID Scopus

2-s2.0-105000645397

Klíčová slova anglicky

Binaries; Eclipsing Binaries; Close Binaries; Low-mass Stars; Activity Stars; Fundamental parameters Stars; Individual; BB Per

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 1. 12. 2025 13:24, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

We present a detailed analysis of the low-mass detached eclipsing binary system BB Persei, which contains two K-type stars in a circular orbit with a short period of 0.4856 d. We used light curves from the Transiting Exoplanet Survey Satellite (Tess), which observed BB Per in five sectors, to determine its photometric properties and a precise orbital ephemeris. The solution of the Tess light curve in PHOEBE results in a detached configuration, where the temperature of the primary component was fixed to T1 = 5 300 K according to LAMOsT, which gives us T2 = 5050 +/- 50 K for the secondary. The spectral type of the primary component was derived as K0 and the photometric mass ratio was estimated q = 0.90. Slow period changes on the current O-C diagram spanning the past 25 years indicate the presence of a third body orbiting the eclipsing pair with an orbital period of about 22 years. The companion could be a red dwarf of spectral type M6-M7 with a minimal mass of about 0.1 M ae. The characteristics and temporal variation of the dark region on the surface of the secondary component were estimated.

Citovat

WOLF, Marek; Petr ZASCHE; Miloslav ZEJDA; Martin MASEK; Andrej MUDRAY; Hana KUCAKOVA; Waldemar OGLOZA; Jaroslav MERC; Jan KARA a Vojtech DIENSTBIER. TESS light curves and period changes in low-mass eclipsing binary BB Persei. New Astronomy. Elsevier, 2025, roč. 119, October, s. 102406-102412. ISSN 1384-1076. Dostupné z: https://doi.org/10.1016/j.newast.2025.102406.

@article{2536961,
   author = {Wolf, Marek and Zasche, Petr and Zejda, Miloslav and Masek, Martin and Mudray, Andrej and Kucakova, Hana and Ogloza, Waldemar and Merc, Jaroslav and Kara, Jan and Dienstbier, Vojtech},
   article_number = {October},
   doi = {https://doi.org/10.1016/j.newast.2025.102406},
   keywords = {Binaries; Eclipsing Binaries; Close Binaries; Low-mass Stars; Activity Stars; Fundamental parameters Stars; Individual; BB Per},
   language = {eng},
   issn = {1384-1076},
   journal = {New Astronomy},
   title = {TESS light curves and period changes in low-mass eclipsing binary BB Persei},
   url = {https://www.sciencedirect.com/science/article/pii/S1384107625000557},
   volume = {119},
   year = {2025}
}

TY  - JOUR
ID  - 2536961
AU  - Wolf, Marek - Zasche, Petr - Zejda, Miloslav - Masek, Martin - Mudray, Andrej - Kucakova, Hana - Ogloza, Waldemar - Merc, Jaroslav - Kara, Jan - Dienstbier, Vojtech
PY  - 2025
TI  - TESS light curves and period changes in low-mass eclipsing binary BB Persei
JF  - New Astronomy
VL  - 119
IS  - October
SP  - 102406
EP  - 102406
PB  - Elsevier
SN  - 13841076
KW  - Binaries
KW  - Eclipsing Binaries
KW  - Close Binaries
KW  - Low-mass Stars
KW  - Activity Stars
KW  - Fundamental parameters Stars
KW  - Individual
KW  - BB Per
UR  - https://www.sciencedirect.com/science/article/pii/S1384107625000557
N2  - We present a detailed analysis of the low-mass detached eclipsing binary system BB Persei, which contains two K-type stars in a circular orbit with a short period of 0.4856 d. We used light curves from the Transiting Exoplanet Survey Satellite (Tess), which observed BB Per in five sectors, to determine its photometric properties and a precise orbital ephemeris. The solution of the Tess light curve in PHOEBE results in a detached configuration, where the temperature of the primary component was fixed to T1 = 5 300 K according to LAMOsT, which gives us T2 = 5050 +/- 50 K for the secondary. The spectral type of the primary component was derived as K0 and the photometric mass ratio was estimated q = 0.90. Slow period changes on the current O-C diagram spanning the past 25 years indicate the presence of a third body orbiting the eclipsing pair with an orbital period of about 22 years. The companion could be a red dwarf of spectral type M6-M7 with a minimal mass of about 0.1 M ae. The characteristics and temporal variation of the dark region on the surface of the secondary component were estimated.
ER  -

WOLF, Marek; Petr ZASCHE; Miloslav ZEJDA; Martin MASEK; Andrej MUDRAY; Hana KUCAKOVA; Waldemar OGLOZA; Jaroslav MERC; Jan KARA a Vojtech DIENSTBIER. TESS light curves and period changes in low-mass eclipsing binary BB Persei. \textit{New Astronomy}. Elsevier, 2025, roč.~119, October, s.~102406-102412. ISSN~1384-1076. Dostupné z: https://doi.org/10.1016/j.newast.2025.102406.

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