It takes two to tango, but in the case of brown dwarfs that were once paired as binary systems, that relationship doesn’t last for very long, according to a recent […]
imaging
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report
Characterization of Starspots on a Young M-dwarf K2-25: Multi-band Observations of Stellar Photometric Variability and Planetary Transits
Detailed atmospheric characterization of exoplanets by transmission spectroscopy requires careful consideration of stellar surface inhomogeneities induced by starspots.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Twin Stars Reveal Planet Eating Habits
At least one in a dozen stars show evidence of planetary ingestion according to a paper published in Nature today.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
TOI-4438 b: A Transiting Mini-Neptune Amenable To Atmospheric Characterization
We report the confirmation and mass determination of a mini-Neptune transiting the M3.5 V star TOI-4438 (G 182-34) every 7.44 days. A transit signal was detected with NASA’s TESS space […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Main-sequence Exoplanet Systems: Tidal Evolution
The easiest exoplanets to detect are those that orbit very close to their hoststars. As a result, even though these planets are quite rare, they represent a major fraction of […]
Posted inAstrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
MINDS: JWST/NIRCam Imaging Of The Protoplanetary Disk PDS 70
Context. Two protoplanets have recently been discovered within the PDS 70 protoplanetary disk. JWST/NIRCam offers a unique opportunity to characterize them and their birth environment at wavelengths difficult to access […]
Posted inAtmospheres, Climate, Weather, Brown Dwarfs, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Atmospheric Waves Driving Variability and Cloud Modulation on a Planetary-Mass Object
Planetary-mass objects and brown dwarfs at the transition from relatively red L dwarfs to bluer mid-T dwarfs (Teff∼1300 K) show enhanced spectrophotometric variability.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Single Transit Detection In Kepler With Machine Learning And Onboard Spacecraft Diagnostics
Exoplanet discovery at long orbital periods requires reliably detecting individual transits without additional information about the system. Techniques like phase-folding of light curves and periodogram analysis of radial velocity data […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Status Report
Thermal Structure Of Circumbinary Discs: Circumbinary Planets Should Be Icy Not Rocky
The process of forming a circumbinary planet is thought to be intimately related to the structure of the nascent circumbinary disc. It has been shown that the structure of a […]
Posted inAstronomy & Telescopes, Brown Dwarfs, Citizen Science / Open Science, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
89 New Ultracool Dwarf Co-Moving Companions Identified With The Backyard Worlds: Planet 9 Citizen Science Project
We report the identification of 89 new systems containing ultracool dwarf companions to main sequence stars and white dwarfs, using the citizen science project Backyard Worlds: Planet 9 and cross-reference […]