A binary star with a ? Scuti component
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Tarih
2003
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Univ Chicago Press
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
New photometric observations of the Algol-type binary system AB Cassiopeiae were obtained in B and V filters during the 2001-2002 observing season at Ege University Observatory. As expected, the new light curves of the system, which were analyzed using the Wilson-Devinney code, exhibit short-period oscillations due to pulsation of the primary component. A photometric q-value search was performed, and the mass ratio of the system was found to be 0.19. The residuals from the observed-minus-computed light curves of the system reveal the pulsation light curves of the primary component. From the clear cycles of the pulsations in the light curves, we determined 21 new times of maximum light. The frequency content was investigated by using the Period98 program. Although the amplitude variation may suggest multiple periodicity in the pulsations, the power spectrum shows that only one frequency is significant; the remaining frequencies are probably not statistically significant. A multisite campaign is needed in order to study the reliability of the other pulsation modes.
Açıklama
Anahtar Kelimeler
close, binaries : eclipsing, delta Scuti, stars : individual : (AB Cassiopeiae)
Kaynak
Astronomical Journal
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
126
Sayı
4
