Ref: ASTROimport-810

The oscillation modes of the beta Cephei star in HD 92024 in the open cluster NGC 3293 .

Freyhammer, L. M. ; Hensberge, H. ; Sterken, C. ; De Cat, P. ; Aerts, C.

published in Memorie della Societa Astronomica Italiana, 77, pp. 334 (2006)

Abstract: The primary star of the binary HD 92024 is a prominent beta Cephei variable; three oscillation frequencies are known, it is an eclipsing binary component and has cluster membership (NGC 3293). Towards asteroseismic inferences of the star's three known oscillation frequencies, we use photometry and spectroscopy to find that f_1=5.6400 ;c d-1, f_2=7.1624 ;c d-1 and f_3=6.6584 ;c d-1 are modes of degree l=2, 4 and 2 respectively, all with m≠0. We also find that by combining pulsational information from several spectral lines, we suppress the noise and improve the mode-identification process. In conclusion, HD 92024 is a key object to be subjected to a seismic analysis.

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The record appears in these collections:
Royal Observatory of Belgium > Astronomy & Astrophysics
Science Articles > Non-refereed Articles

 Record created 2016-07-01, last modified 2016-07-01