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Asteroseismology of the β Cephei Star 12 (DD) Lacertae

Published online by Cambridge University Press:  08 February 2017

W.A. Dziembowski  and
M. Jerzykiewicz
W.A. Dziembowski
Affiliation:
Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland
M. Jerzykiewicz
Affiliation:
Wroclaw University Observatory, ul. Kopernika 11, 51-622 Wroclaw, Poland

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The frequency spectrum in Fig. 1 shows that at least five pulsation modes are excited in DD Lac. Three frequencies, f 1, f 4, and f 3, form an equidistant triplet. In addition to the value of the central frequency, f 4, the triplet can be characterized by the mean separation, S = (f 3 − f 1)/2, and the asymmetry, Δf = f 4 − (f 1 + f 3)/2. Taking the values of the frequencies from a recent analysis of all available data (Pigulski 1994), we get S = 0.15544 ± 0.00021 and Δf = −0.00014 ± 0.00029 d−1.

Information

Type
VI. Asteroseismology II
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 379 - 382
Copyright
Copyright © Kluwer 1998 

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