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astro-ph.SR2009★ 2 cited
Accounting for Convective Blue-Shifts in the Determination of Absolute Stellar Radial Velocities
C. Allende Prieto, L. Koesterke, I. Ramirez +2
For late-type non-active stars, gravitational redshifts and convective blueshifts are the main source of biases in the determination of radial velocities. If ignored, these effects…
astro-ph.SR2009
Granulation across the HR diagram
I. Ramirez, C. Allende Prieto, D. L. Lambert +2
We have obtained ultra-high quality spectra (R=180,000; S/N>300) with unprecedented wavelength coverage (4400 to 7400 A) for a number of stars covering most of the HR diagram in or…