Spatially resolved spectroscopy across stellar surfaces
@article{Dravins2018SpatiallyRS, title={Spatially resolved spectroscopy across stellar surfaces}, author={Dainis Dravins and Hans-G. Ludwig and Bernd Freytag}, journal={Astronomy \& Astrophysics}, year={2018}, volume={649}, pages={A16} }
Context. High-precision stellar analyses require hydrodynamic 3D modeling. Such models predict changes across stellar disks of spectral line shapes, asymmetries, and wavelength shifts. For testing models in stars other than the Sun, spatially resolved observations are feasible from differential spectroscopy during exoplanet transits, retrieving spectra of those stellar surface segments that successively become hidden behind the transiting planet, as demonstrated in Papers I, II, and III.
Aims…
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