Some stars have planets. Others are orbited by brown dwarfs, balls of gas too massive to be planets, but too low-mass to be stars. Astronomers love these brown dwarf-star pairs […]
binary star
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Press Release, Stellar Cartography
Tatooine-Class Planet Discovered Orbiting Two Suns
There’s so little we know about circumbinary planets – planets that orbit two stars instead of one – that they can feel like the stuff of fantasy.
Posted inExoplanets, -moons, -comets, Status Report, Stellar Cartography
Planetary Architectures of Kepler Compact Multis with Binary Star Companions
Planets in binary-star systems exhibit demographic differences compared to planets in single-star systems.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
A Century of Radial Velocity and Astrometric Monitoring of 70 Oph AB: New PFS Data and Constraints on Planetary Companions
At a distance of 5.1 pc, the 70 Oph AB binary star system is one of the most favorable targets for future direct imaging and astrometry missions surveying mature, terrestrial […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gaia Mission, Habitable Zones, Imaging & Spectroscopy, Status Report
Predicting Gaia Astrometry’s Ability To Constrain The Populations Of Circumbinary Planets
The coming data releases of Gaia are expected to result in an upheaval of exoplanet science, in particular for long period giant planets (0.2MJ≤M≤25MJ). One class of exoplanets which Gaia […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Stellar And Orbital Characterization Of Three Low Mass M Dwarf Binary Stars With Dynamical Spectroscopy From The Habitable Zone Planet Finder
Contrast curves and reconstructed images from the NESSI speckle imager for a: LSPM 0515+5911, b: NLTT 45468, and c: NLTT 43564. Neither LSPM 0515+5911 nor NLTT 43564 show companions within […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
Two Warm Earth-sized Exoplanets And An Earth-sized Candidate In The M5V-M6V Binary System TOI-2267
We report the discovery of two “warm” exoplanets orbiting a very tight pair of small, cool stars called TOI-2267.
Posted inAstrogeology, Exoplanets, -moons, -comets, Mapping, Geodesy, Cartography, Bathymetry, Press Release, Water/Hycean Worlds & Oceanography
Tidally Driven Inertial Waves Enhance Eccentricity Damping And Spin Evolution In Planets And Stars
Tidal interactions influence the orbital motions of binary star systems and extrasolar planets alike.
Posted inExoplanets, -moons, -comets, Status Report
Secular Resonances in Planet-Hosting Binary Stars. II. Application to Terrestrial Planet Formation
Continuing our study of the effects of secular resonances on the formation of terrestrial planets in moderately close binary stars, we present here the results of an extensive numerical simulations […]
Posted inExoplanets, -moons, -comets, Status Report, Stellar Cartography
Secular Resonances in Planet-Hosting Binary Stars. I. General Theory
Motivated by the diversity of circumstellar planets in binary stars and the strong effects of the secular resonances of Jupiter and Saturn on the formation and architecture of the inner […]