Unveiling the small rocky planets with HARPS-N

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• Ati Motalebi (Geneva)
• Wednesday 04 May 2016, 16:15-17:00
• Martin Ryle Seminar Room, Kavli Institute.

If you have a question about this talk, please contact Dr B.-O. Demory.

For understanding the frequency of potentially habitable worlds and to constrain planet formation theories, it is critical to discover a sample of planetary systems that populate different regimes.

The NASA Kepler Mission has demonstrated that planets with 1 – 4 Earth radii are common around Sun-like stars. A chief objective of the HARPS -N Consortium is to measure accurately the masses and infer compositions for a sample of these small worlds. To study and characterise the planetary systems, we have at our disposal a sample of non-active and nearby G and K dwarfs through precise radial velocity measurements using HARPS -N.

HARPS -N is an ultra-stable fiber-fed high-resolution spectrograph installed on the TNG telescope at La Palma in the Canary Islands. I report on its performance during its first three years, and in particular the discovery of HD 219134 : the closest exoplanet system to the Sun containing a rocky planet.

This talk is part of the Exoplanet Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology, Astrophysics and General Relativity
• Exoplanet Seminars
• Institute of Astronomy Talk Lists
• LCLU Departmental Talks
• Martin Ryle Seminar Room, Kavli Institute

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