Solar-like oscillations on Alpha Centauri A

Details Solar-like oscillations on Alpha Centauri A Solar-like oscillations on Alpha Centauri A

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aspc...40..717p&link_type=abstract

In: Inside the stars; Proceedings of the 137th IAU Colloquium, Univ. of Vienna, Austria, Apr. 13-18, 1992 (A93-53126 23-90), p.

Physics

1

G Stars, Stellar Oscillations, P Waves, Power Spectra

Scientific paper

Detection of individual modes of oscillation near a 5-min period is proposed, based on the comblike signature which is similar to that found in the sun. The mean peak amplitudes of the strongest individual modes are 75-120 cm/s, and the mean separation between alternate modes is 55.3 +/- 3.6 micro-Hz. Apparent modal lifetimes are on the order of 2 d, but we suggest this may be caused by the interference of adjacent modes.

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