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Time-resolved high-resolution spectroscopy of the pulsating sdB star QQ Vir (PG1325+101) John Telting et al., Shanghai, July 2009 |
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Problem 1: subdwarfs have low rotational
line-broadening ⇒ no Doppler imaging
Solution 1: fit a model of the 3D
pulsational surface velocity field to the observed line-profile variability.
However, only L≤4 modes give detectable LPV.
| L=0 |M|=0 | L=1 |M|=1 | L=2 |M|=0 | L=2 |M|=1 | L=2 |M|=2 |
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