Planets orbiting close to the most abundant and longest-lasting stars in our Milky Way may be less hospitable to life than previously thought.
Barnard’s Star
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release
Directly Imaged Exoplanets In Reflected Starlight. The Importance Of Knowing The Planet Radius
We have investigated the information content in reflected-starlight spectra of exoplanets. We specify our analysis to Barnard’s Star b candidate super-Earth, for which we assume a radius 0.6 times that […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Habitable Zones, Press Release
Habitable Zone Planet Finder Enables Discoveries Around Cool Stars
A new astronomical spectrograph built by a Penn State-led team of scientists provides the highest precision measurements to date of infrared signals from nearby stars, allowing astronomers to detect planets […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release
Breezing Through The Space Environment of Barnard's Star b
A physically realistic stellar wind model based on Alfvén wave dissipation has been used to simulate the wind from Barnard’s Star and to calculate the conditions at the location of […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release, Space Weather & Heliophysics
Stellar Activity Analysis of Barnard's Star
The search for Earth-like planets around late-type stars using ultra-stable spectrographs requires a very precise characterization of the stellar activity and the magnetic cycle of the star, since these phenomena […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release
Prospects For Detecting The Astrometric Signature of Barnard's Star b
A low-amplitude periodic signal in the radial-velocity (RV) time-series of Barnard’s Star was recently attributed to a planetary companion with a minimum mass of ∼3.2 M⊕ at an orbital period […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release
A Super-Earth Planet Candidate Orbiting at the Snow-line of Barnard's Star
At a distance of 1.8 parsecs, Barnard’s star (Gl 699) is a red dwarf with the largest apparent motion of any known stellar object. It is the closest single star […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release
A Super-Earth Has Been Discovered Orbiting Barnard's Star
The nearest single star to the Sun hosts an exoplanet at least 3.2 times as massive as Earth — a so-called super-Earth. One of the largest observing campaigns to date […]
Posted inAstronomy & Telescopes, Barnard's Star, Exoplanets, -moons, -comets, Press Release
A New Search for Extrasolar Planets Around Barnard's Star
The National Science Foundation’s Arecibo Observatory and the Planetary Habitability Laboratory of the University of Puerto Rico at Arecibo joined the Red Dots project in the search for new planets […]