New light curve analysis and period changes of the HW Vir-type binary system V1828 Aql
Yükleniyor...
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier B.V.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The new BVRI photometric observations of the HW Vir-type eclipsing binary system V1828 Aql (P = 0.11037399 days) were presented. From these measurements, 16 new eclipse times have been obtained. The light curves in BVRI colors and the radial curves were simultaneously analyzed by using the Wilson–Devinney method for the system parameters. The system consists of a very hot primary component (T1 = 42000 K) and a cold secondary component (T2 = 3077 ± 250 K). The absolute dimensions were found as follows: (M1 = 0.351 ± 4 0.040 M⊙, M2 = 0.095 ± 0.011 M⊙, R1 = 0.176 ± 0.007 R⊙, R2 = 0.140 ± 0.007 R⊙, L1 =86.91 ± 6.76 L⊙ and L2 = 0.002 ± 0.001 L⊙). The orbital period variation of V1828 Aql was made using all available light minimum times. From the (O - C) diagram, the orbital period shows a variation possibly attributable to the light travel time effect by the presence of the third body. The third body orbital period is P3 = 3317.7−17.2+18.9 days, its minimal mass is M3 = 13.24−0.14+0.13 Mj. The mass value calculated for the third body shows, that this object is right at the border between the planets and the brown dwarfs.
Açıklama
Anahtar Kelimeler
Stars: Binaries: Eclipsing, Stars: Fundamental parameters, Stars: Individual: V1828 Aql, Stars: Orbital period
Kaynak
New Astronomy
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
92
Sayı
Künye
Nehir, Ç., & Bulut, İ. (2022). New light curve analysis and period changes of the HW vir-type binary system V1828 aql. New Astronomy, 92 doi:10.1016/j.newast.2021.101703
