Spectropolarimetry of starspots
Abstract
We use the simulations of Stokes profiles for active late-type stars in order to assess the requirements to the observations and select the best observing strategy for these objects. The synthetic spectropolarimetry was computed using models of magnetic fields distribution for several rotational phases throughout the activity cycle. The simulations show that cyclic variations of the polarization profiles are more systematic and easier to observe and that averaging over single rotation periods may be used to increase the signal-to-noise ratio.
- Publication:
-
Astronomische Nachrichten
- Pub Date:
- July 2002
- DOI:
- 10.1002/1521-3994(200208)323:3/4<257::AID-ASNA257>3.0.CO;2-M
- Bibcode:
- 2002AN....323..257P
- Keywords:
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- stars: magnetic fields;
- techniques: spectropolarimetric;
- techniques: magnetic doppler imaging