Radial velocity follow-up of CoRoT transiting exoplanets

TL;DR

This paper presents radial velocity follow-up observations of CoRoT transiting exoplanet candidates, confirming planetary nature, measuring system inclinations, and discovering new low-mass planets.

Contribution

It provides high-precision RV data for CoRoT candidates, confirming planets, measuring the Rossiter-McLaughlin effect, and identifying new low-mass planet candidates.

Findings

Confirmed planetary systems including CoRoT-1b with high inclination.

Measured Rossiter-McLaughlin effect for multiple planets.

Discovered several low-mass planet candidates.

Abstract

We report on the results from the radial-velocity follow-up program performed to establish the planetary nature and to characterize the transiting candidates discovered by the space mission CoRoT. We use the SOPHIE at OHP, HARPS at ESO and the HIRES at Keck spectrographs to collect spectra and high- precision radial velocity (RV) measurements for several dozens dif- ferent candidates from CoRoT. We have measured the Rossiter- McLaughlin effect of several confirmed planets, especially CoRoT- 1b which revealed that it is another highly inclined system. Such high-precision RV data are necessary for the discovery of new tran- siting planets. Furthermore, several low mass planet candidates have emerged from our Keck and HARPS data.