Transcript Présentation PowerPoint - IAG-Usp

n=5 l=3 m=0
W = 0 n=0.378 mHz
W = 0.84 Wk n=0.260mHz
Mode amplitude is
concentrated
in equatorial plane
n=3 l=2 m=2
W = 0 n=0.0.254 mHz
W = 0.59 Wk n=0.164mHz
Mode amplitude is
concentrated
in equatorial plane
n=20 l=2 m=0
W = 0 n = 31.4 mHz
W = 0.46 Wk n=36.2 mHz
Mode amplitude is
concentrated at the poles
2. Introduction
“ Perhaps you are wondering what is the purpose of calculatin
modes and frequencies in rapidly rotating stars.
There are many unresolved questions concerning rotating star
what is their structure like, their rotation profile,
what sort of chemical transport takes place,
how does gravity darkening work etc.
One way to attempt to answer these questions
is through asteroseismology.”
Are there stars with rapid rotation and which pulsate?
Yes, for instance delta Scuti stars and gamma Doradus stars