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

Over de afbeelding

Id:eso0125b
Type:Kaart
Publicatiedatum:28 juni 2001
Gerelateerde berichten:eso0125
Grootte:738 x 717 px

Over het object

Naam:Alpha Centauri, Asteroseismology
Type:Milky Way : Star : Grouping : Binary
Afstand:4 lichtjaren
Categorie:Stars

Afbeeldingstypen

Grote JPEG
59,8 KB

Kleuren & filters

BandTelescoop
OptischSwiss 1.2-metre Leonhard Euler Telescope
CORALIE