Neptune-sized exoplanets are key targets for atmospheric studies, yet their formation and evolution remain poorly understood due to their diverse characteristics and limited sample size.
HARPS-N
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
HADES RV Programme With HARPS-N At TNG. XVI. A super-Earth In The Habitable Zone Of The GJ 3998 Multi-planet System
The low masses of M dwarfs create attractive opportunities for exoplanet radial-velocity (RV) detections. These stars, however, exhibit strong stellar activity that may attenuate or mimic planetary signals.
Posted inExoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
A Super-Earth Discovered In The Habitable Zone Of Nearby Red Dwarf GJ 3998
An international team, led by a student from Instituto de Astrofísica de Canarias (IAC), has detected a super-Earth orbiting in the habitable zone of GJ 3998, a nearby red dwarf […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
A Joint Effort To Discover And Characterize Two Resonant Mini Neptunes Around TOI-1803 With TESS, HARPS-N And CHEOPS
We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest some possible […]
Posted inExoplanets, -moons, -comets, Press Release
Ultra-dense Super-Earth With An Outer Companion Offers Clues About Its Formation
An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a Sun-like star, including an ultra-short period planet with one of the highest […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Precise Density Measurement of TOI-1430 b, A Young Planet With An Evaporating Atmosphere
Small-sized exoplanets in tight orbits around young stars (10-1000 Myr) give us the opportunity to investigate the mechanisms that led to their formation, the evolution of their physical and orbital […]
Posted inAlpha Centauri, Astronomy & Telescopes, Barnard's Star, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
A Sub-Earth-mass Planet Orbiting Barnard’s Star
Barnard’s star is a primary target within the ESPRESSO guaranteed time observations (GTO) as it is the second closest neighbour to our Sun after the α Centauri stellar system.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
The GAPS Programme at TNG. LXI. Atmospheric Parameters and Elemental Abundances of TESS Young Exoplanet Host Stars
The study of exoplanets at different evolutionary stages can shed light on their formation, migration, and evolution. The determination of exoplanet properties depends on the properties of their host stars. […]
Posted inExoplanets, -moons, -comets, Press Release
Three Potential Super-Earths Discovered Around Nearby Star HD 48 948
Astronomers have discovered three potential “super-Earth” exoplanets orbiting a relatively nearby orange dwarf star. This groundbreaking find was made by an international team of researchers led by Dr Shweta Dalal […]
Posted inAlpha Centauri, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, tau Ceti
Improving Earth-like Planet Detection in Radial Velocity Using Deep Learning
Many novel methods have been proposed to mitigate stellar activity for exoplanet detection as the presence of stellar activity in radial velocity (RV) measurements is the current major limitation.