Solar-like oscillations on Alpha Centauri A

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

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...264..138p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 264, no. 1, p. 138-146.

Astronomy and Astrophysics

Astrophysics

25

Helioseismology, Stellar Cores, Stellar Evolution, Stellar Oscillations, Fabry-Perot Interferometers, Hertzsprung-Russell Diagram, P Waves, Power Spectra

Scientific paper

This paper reports the results of an attempt to measure solar-like p-modes of oscillation on Alpha Cen A, using a carefully stabilized Fabry-Perot velocity analyzer. Detection of individual modes of oscillation near 5 min period is proposed, based on the comb-like signature which is similar to that found in the sun. The mean peak amplitudes of the strongest individual modes are in the range of 75 to 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 days, but we suggest this may be caused by interference of adjacent modes. A preliminary discussion of the evolutionary state of Alpha Cen A is made based on these observations.

Affiliated with

Also associated with

No associations

Rating

Solar-like oscillations on Alpha Centauri A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Solar-like oscillations on Alpha Centauri A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar-like oscillations on Alpha Centauri A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1868113