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astro-ph2007
Signatures of Granulation in the Spectra of K-Dwarfs
I. Ramirez, C. Allende Prieto, D. L. Lambert +1
Very high resolution (R>150,000) spectra of a small sample of nearby K-dwarfs have been acquired to measure the line asymmetries and central wavelength shifts caused by convective…
astro-ph2007
Beyond 1D: spectral line formation with 3D hydrodynamical model atmospheres of red giants
R. Collet, M. Asplund, R. Trampedach
We present the results of realistic, 3D, hydrodynamical, simulations of surface convection in red giant stars with varying effective temperatures and metallicities. We use the conv…