[astro-ph.EP] Planet formation requires growth over 12 orders of magnitude in size, from micron-sized dust grains to fully formed planets.
binary star
Posted inExoplanets, -moons, -comets
Large Planets Ruled Out After 70 Ophiuchi AB Binary System Search
[University of Michigan] New research led by the University of Michigan is helping set the stage for future observatories to characterize rocky planets outside our solar system, planets that could […]
Posted inHabitable Zones
Planetary Stability and Long-Term Habitability in Nearby Stellar Binaries: 70 Oph, 36 Oph, γ Leo
[astro-ph.EP] Binary stars are common and have the potential to host habitable planets, which may reside in more complex habitable zones as compared to planets orbiting single stars.
![CH Ind timing and inference. Top: the six differential nodes 𝐷 from equation (1); subtracting primary and secondary O–C values removes their common ephemeris or LTTE trend and isolates the first-order apsidal signal. Bottom: Monte Carlo posteriors for the displayed 0.08-dex common log 𝑘2 systematic; horizontal segments show central 68 per cent intervals.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Stellar-Tidal.png?resize=1200%2C718&ssl=1)
Posted inStellar Cartography
Stellar Tidal Systematics In Apsidal-motion Searches For Circumbinary Planets: CH Ind And SW CMa
[astro-ph.EP] Thornton et al. (2026) reported 27 non-transiting circumbinary-planet candidates from excess apsidal motion in TESS eclipsing-binary timings. The classical stellar contribution is sensitive to target-specific radii, apsidal constants k2, […]
Posted inUncategorized
NASA’s Backyard Worlds: Binaries Project
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 […]
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 […]