Detection of a cyclic period change in the contact binary TU UMi
[ X ]
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Slovak Academy Sciences Astronomical Inst
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study aims at timing the eclipses of the binary star TU UMi. The times of minima are taken from the literature, from our observations in April 2004 and from TESS observations between 2019 and 2022. The orbital period analysis of the system indicates that there is a cyclic oscillation with an amplitude of 0.0081d and a period of 9.03 yr, accompanied by a continuous decrease at a rate of dP/dt = ???1.12 ?? 10???7 d yr???1. We study the secular evolution of the orbital period of the system and the possibility of the existence of a third companion or the magnetic activity cycle of the primary component in the system.
Açıklama
Anahtar Kelimeler
Stars, binaries, eclipsing, Stars, Individual TU UMi
Kaynak
Contributions of The Astronomical Observatory Skalnate Pleso
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
52
Sayı
2
