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Solar-Like Oscillations on α Centauri A

Published online by Cambridge University Press:  12 April 2016

Edward M. Pottasch ,
Harvey R. Butcher  and
Frans H.J. Van Hoesel
Edward M. Pottasch
Affiliation:
Kapteyn Observatory, Mensingheweg 20, 9301 KA RodenThe Netherlands.
Harvey R. Butcher
Affiliation:
Kapteyn Observatory, Mensingheweg 20, 9301 KA RodenThe Netherlands.
Frans H.J. Van Hoesel
Affiliation:
Kapteyn Observatory, Mensingheweg 20, 9301 KA RodenThe Netherlands.

Abstract

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Detection of individual modes of oscillation near 5 minutes period is proposed, based on the comb-like signature which is similar to that found in the sun. The mean peak amplitudes (ap) of the strongest individual modes are 75 ≤ ap ≤ 120 cm/s, and the mean separation between alternate modes is 55.3 ± 3.6 μHz. Apparent modal lifetimes are on the order of 2 days, but we suggest this may be caused by interference of adjacent modes.

Type
VIII. Asteroseismology: observation
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 717 - 720
Copyright
Copyright © Astronomical Society of the Pacific 1993

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