RESEARCH
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Towards precise and accurate exoplanet mass determinations: HARPS-N observes the Sun

RaphaŽlle D. Haywood
Harvard-Smithsonian Center for Astrophysics

Abstract
The HARPS-N spectrograph is now operating with a new solar telescope feed since July 2015. I will present early results from the first 11 months of HARPS-N observations of the Sun as a star, with a particular focus on our investigations aimed at understanding radial-velocity variations induced by the Sun’s surface activity (sunspots, faculae/plage, granulation).
This solar dataset is also key to improving our wavelength calibration and data reduction techniques, and to designing more efficient observing strategies for the stars targeted by HARPS-N at nighttime.

2016 May 25, 13:30

IA/U.Porto
Centro de AstrofŪsica da Universidade do Porto (Auditorium)
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Instituto de Astrof√≠sica e Ci√™ncias do Espa√ßo Universidade do Porto Faculdade de Ciências da Universidade de Lisboa Funda√ß√£o para a Ci√™ncia e a Tecnologia
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