Acoustic Spectrum of Alpha Centauri A

This chart represents the spectrum of acoustic modes, as observed in Alpha Cen A with the CORALIE spectrograph on the 1.2-m Swiss telescope at the ESO La Silla observatory. Several "eigenmodes" appear as high peaks in the frequency interval between 1.7 and 3 mHz; they correspond to oscillation periods in the range from 5 to 10 min. A very similar pattern is observed in the Sun.

Credit:

ESO

About the Image

Id:eso0125b
Type:Chart
Release date:28 June 2001
Related releases:eso0125
Size:738 x 717 px

About the Object

Name:Alpha Centauri, Asteroseismology
Type:• Milky Way : Star : Grouping : Binary
• X - Stars
Distance:4 light years

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