Photometric Investigation of Contact Binary DY Cet Based on TESS Data
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Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Natl Astronomical Observatories, Chin Acad Sciences
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
We present a photometric analysis of the Transiting Exoplanet Survey Satellite (TESS) light curve of contact binary system DY Cet and the behavior of its orbital period variation. The light curve and published radial velocity data analysis was performed using the Wilson-Devinney code. As a result of simultaneous analysis of the light curve with radial velocity data, the masses and radii of the system's components were determined as M (1) = 1.55 +/- 0.02 M (circle dot), M (2) = 0.55 +/- 0.01 M (circle dot) and R (1) = 1.51 +/- 0.02 R (circle dot), R (2) = 0.95 +/- 0.02 R (circle dot), respectively. The degree of contact (f) and mass ratio (q) of the system were determined as 23% and 0.355 +/- 0.012, respectively. Orbital period analysis of DY Cet was conducted for the first time in this study. It was observed that the orbital period has a sinusoidal change with decreasing parabola. To explain the orbital period change, mass transfer between components is proposed with the assumption of conservative mass, and the transfer rate was calculated to be dM/dt = 1.1 x 10(-7) M (circle dot) yr(-1). A possible third component is suggested for explaining the sinusoidal change, and the mass of the unseen component was determined as 0.13 M (circle dot). The age of the DY Cet system was estimated as 3.77 Gyr.
Açıklama
Anahtar Kelimeler
stars, eclipsing binary stars, stars, fundamental parameters of stars, stars, individual (DY Cet)
Kaynak
Research in Astronomy and Astrophysics
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
22
Sayı
5
