SIMBAD references

2007ApJ...656..474B - Astrophys. J., 656, 474-482 (2007/February-2)

Photospheric and chromospheric active regions in four young solar-type stars.

BIAZZO K., FRASCA A., HENRY G.W., CATALANO S. and MARILLI E.

Abstract (from CDS):

We present a photometric and spectroscopic study of four G-K dwarfs, namely HD 166, ε Eri, χ1 Ori, and κ1 Cet. In three cases, we find a clear spatial association between photospheric and chromospheric active regions. For χ1 Ori we do not find appreciable variations of photospheric temperature or chromospheric Hα emission. We applied a spot/plage model to the observed rotational modulation of temperature and flux to derive spot/plage parameters and to reconstruct a rough ``three-dimensional'' map of the outer atmosphere of κ1 Cet, HD 166, and ε Eri.

Abstract Copyright:

Journal keyword(s): Stars: Activity - Stars: Late-Type - Techniques: Photometric - Techniques: Spectroscopic

Simbad objects: 16

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2019.10.23-08:30:58

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