vai al contenuto della pagina vai al menu di navigazione

HARPS-N@TNG: Ushering in the New Frontier of Exoplanetary Science

by Alessandro Sozzetti (INAF-Osservatorio Astronomico di Torino)

May 14, 2014 from 03:00 PM to 04:30 PM

Where Sala riunioni IASF-Bo (II piano), via Gobetti 101

Contact Name

Add to your calendar


The HARPS-N echelle spectrograph on the Telescopio Nazionale Galileo is now well into its second year of science operations. It provides an extremely stable, high-resolution platform at visible wavelengths, enabling the measurement of radial velocities with the highest precision (1 m/s) currently available in the northern hemisphere.

There are presently two large observing programmes being executed with HARPS-N that are taking advantage of the unique capabilities of the instrument to undertake cutting-edge science in the realm of extrasolar planetary systems. The Guaranteed Time Observations (GTO) programme of the HARPS-N Consortium (responsible for the instrument’s fabrication and operations) is focused on a) the follow-up of small-size transiting planet candidates uncovered by the Kepler mission to establish their nature and to determine accurately their masses, and b) the search for terrestrial planets around a selected sample of bright, nearby solar-type dwarfs.

The scientific exploitation of the GTO programme is carried out within the framework of the FP7-SPACE collaborative project ETAEARTH, coordinated by INAF.

The Global Architecture of Planetary Systems (GAPS) programme, a large INAF-led effort of the italian scientific community involved in exoplanet science, is composed of three main elements, including 1) radial-velocity searches for low-mass planets around stars with and without known planets and with a broad range of properties (mass, metallicity) of the hosts, 2) characterization measurements of known transiting exoplanet systems, and 3) improved determinations of relevant physical parameters (masses, radii, ages) and of the degree of star-planet interactions for selected planet hosts.

I will present recent results from the ongoing GTO radial-velocity campaign with HARPS-N in the Kepler field, and provide an overview of the findings emerging from the pool of the various GAPS programme elements.

More information about this event…