Fourier Coefficients of OGLE Variables. III. δ Scuti Stars

• Autorzy: Morgan S. M. , Simet M. , Bargenquast S.
• Języki publikacji: EN

Abstrakty

EN

Fourier coefficients for δ Scuti from the OGLE dark matter survey of the Galactic bulge are compared to the coefficients of similar stars, mainly High Amplitude δ Scuti and SX Phe stars. While in previous studies there appears to be a division amongst the δ Scuti stars based upon the R₂₁ parameter, such a division is not apparent in the OGLE stars. There does though appear to be a separation of the δ Scuti stars based upon the φ₃₁ variable. This separation is not likely due to a metal variation and its cause is not known. Values for the extinction towards the Galactic bulge can be used to estimate a distance of approximately 7.6 kpc for the δ Scuti stars. One variable does appear to be located beyond the Galactic bulge at a distance of approximately 21 kpc.

Słowa kluczowe

EN

δ Scu

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 1998
• Tom: Vol. 48, No. 3
• Strony: 509--518
• Opis fizyczny: Bibliogr. 20 poz., tab., wykr.

Twórcy

autor

Morgan S. M.

• Department of Earth Science, University of Northern Iowa, Cedar Falls, IA 50614-0335, USA

autor

Simet M.

• Department of Earth Science, University of Northern Iowa, Cedar Falls, IA 50614-0335, USA

autor

Bargenquast S.

• Department of Earth Science, University of Northern Iowa, Cedar Falls, IA 50614-0335, USA

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