Speaker
Description
There are currently rather few catalogues of rotational velocity of FGK type stars, based on high-resolution spectra. This paper aims to present a method for determining the rotational velocities of cool stars, for the AMBRE Project. The AMBRE main goal is to parametrize European Southern Observatory (ESO) archived high-resolution spectra, make their parameters publicly available and help in the development of the analysis pipeline of the Gaia spectra. Our analysis focuses on establishing the coupling constant between the width of the spectral lines and the stellar rotation, which is essential for accurate velocity determinations. For that purpose,we developed a specific calibration method based on the cross correlation function between stellar spectra and specific masks. It is first applied to data collected with the ESO Fiber-fed Extended Range Optical Spectrograph (FEROS).
| Abstract Category | Astrophysics & Cosmology |
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