There are several methods for indirectly detecting exoplanets, such as transit, radial velocity, astrometry, and the conventional gravitational microlensing approach. These methods rely on observing the effects of exoplanets on […]
Astrometry
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
The Radius Distribution Of M dwarf-hosted Planets And Its Evolution
M dwarf stars are not only the most promising hosts for detection and characterization of small and potentially habitable planets, they provide leverage relative to solar-type stars to test models […]
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report, Stellar Cartography
Near-infrared Spectroscopic Characterisation Of Gaia Ultra-cool Dwarf Candidates; Spectral Types And Peculiarities
Context: The local census of very low-mass stars and brown dwarfs is crucial to improving our understanding of the stellar-substellar transition and their formation history. These objects, known as ultra-cool […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Prospects From TESS And Gaia To Constrain The Flatness Of Planetary Systems
The mutual inclination between planets orbiting the same star provides key information to understand the formation and evolution of multi-planet systems.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, SETI & Technosignatures, Status Report
The Possibility Of Detecting Our Solar System Through Astrometry
Searching for exoplanets with different methods has always been the focus of astronomers over the past few years. Among multiple planet detection techniques, astrometry stands out for its capability to […]
Posted inCallisto, Europa, Ganymede, Icy Worlds, Io, Jupiter, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Status Report
Combining Astrometry and JUICE — Europa Clipper Radio Science To Improve The Ephemerides Of The Galilean Moons
The upcoming JUICE and Europa Clipper missions to Jupiter’s Galilean satellites will provide radio science tracking measurements of both spacecraft. Such data are expected to significantly help estimating the moons’ […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Detecting Solar System Analogs Through Joint Radial Velocity/Astrometric Surveys
Earth-mass exoplanets on year-long orbits and cool gas giants (CGG) on decade-long orbits lie at the edge of current detection limits.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Press Release
Combining Photometry and Astrometry to Improve Orbit Retrieval of Directly Imaged Exoplanets
Future missions like Roman, HabEx, and LUVOIR will directly image exoplanets in reflected light. While current near infrared direct imaging searches are only sensitive to young, self-luminous planets whose brightness […]
Posted inAstronomy & Telescopes
High Definition Astrometry
High Definition Astrometry (0.1 – 1.0 micro-arcseconds) will open a new window into neighboring planetary systems. For the first time, the realm of temperate terrestrial worlds will be explored. This […]