The discovery of only a handful of exoplanets required establishing a correlation between
giant planet occurrence and metallicity of their host stars. More than 20 years have already …

Ultrahot giant exoplanets receive thousands of times Earth's insolation 1, 2. Their high-
temperature atmospheres (greater than 2,000 kelvin) are ideal laboratories for studying …

Stars and planets both form by accreting material from a surrounding disk. Because they
grow from the same material, theory predicts that there should be a relationship between …

Aims. We report on ESPRESSO high-resolution transmission spectroscopic observations of
two primary transits of the highly irradiated, ultra-hot Jupiter-sized planet, WASP-76b. We …

ABSTRACT CHEOPS (CHaracterising ExOPlanet Satellite) is an ESA S-class mission that
observes bright stars at high cadence from low-Earth orbit. The main aim of the mission is to …

Aims. The catalog of Stars With ExoplanETs (SWEET-Cat) was originally introduced in 2013.
Since then many more exoplanets have been confirmed, increasing significantly the number …

Aims. The main objective of this project is to characterise chromospheric activity of FGK stars
from the HARPS archive. We start, in this first paper, by presenting a catalogue of …

Context. Ultra-short period planets undergo strong tidal interactions with their host star which
lead to planet deformation and orbital tidal decay. Aims. WASP-103b is the exoplanet with …

AU Mic is a young planetary system with a resolved debris disc showing signs of planet
formation and two transiting warm Neptunes near mean-motion resonances. Here we …

While cooler giant planets are often observed with nonzero eccentricities, the short-period
circular orbits of hot Jupiters suggest that they lose orbital energy and angular momentum …