Detection of Multiplets of Degree ℓ=3 and ℓ=4 in the Subdwarf-B Pulsator KIC 10139564

• Autorzy: Baran A. S. , Østensen R. H.
• Języki publikacji: EN

Abstrakty

EN

We present up-to-date results on the short-period sdB pulsator in the Kepler field, KIC 10139564, including 27 months of near continuous photometric data. With this extended dataset we significantly lower the detection threshold, which allows us to detect multiplet components that were missing in our previous analysis based on 15 months of data. We conclude that two regions in the amplitude spectrum of KIC 10139564 contain modes of degree ℓ=3 and ℓ=4, respectively. We also identify many combination frequencies, in both the sub- and super-Nyquist regions, as well as several pulsation modes which show strong frequency or amplitude variability.

Słowa kluczowe

EN

subdwarfs; stars: oscillations: including pulsations; asteroseismology

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2013
• Tom: Vol. 63, No. 1
• Strony: 79--90
• Opis fizyczny: Bibliogr. 11 poz., rys., tab., wykr.

Twórcy

autor

Baran A. S.

• Mt. Suhora Observatory of the Pedagogical University, ul. Podchorążych 2, 30-084 Cracow, Poland
• Missouri State University, Department of Physics, Astronomy and Materials Science 901 S. National Av., Springfield, MO 65897, USA

autor

Østensen R. H.

• Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium

Bibliografia

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