We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well
as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous …

Doppler spectroscopy was the first technique used to reveal the existence of extrasolar
planetary systems hosted by solar-type stars. Radial-velocity surveys led to the detection of …

Context. The solar telescope connected to HARPS-N has been observing the Sun since the
summer of 2015. Such a high-cadence, long-baseline data set is crucial for understanding …

ABSTRACT This paper presents SOAP 2.0, a new version of the Spot Oscillation And Planet
(SOAP) code that estimates in a simple way the photometric and radial velocity (RV) …

Context. Stellar activity is the main limitation to the detection of an Earth-twin using the radial-
velocity (RV) technique. Despite many efforts in trying to mitigate the effect of stellar activity …

Measured spectral shifts due to intrinsic stellar variability (eg, pulsations, granulation) and
activity (eg, spots, plages) are the largest source of error for extreme-precision radial-velocity …

Context. Stellar activity and instrumental signals are the main limitations to the detection of
Earth-like planets using the radial-velocity (RV) technique. Recent studies show that the key …

Context. Radial-velocity (RV) signals arising from stellar photospheric phenomena are the
main limitation for precise RV measurements. Those signals induce RV variations an order …

Orbiting a bright, nearby star the 55 Cnc system offers a rare opportunity to study a
multiplanet system that has a wide range of planetary masses and orbital distances. Using …

Radial velocity (RV) perturbations induced by stellar surface inhomogeneities including
spots, plages and granules currently limit the detection of Earth-twins using Doppler …