We aim to constrain the internal structure and composition of HD 15337 b and c, two short-period planets situated on opposite sides of the radius valley, using new transit photometry […]
TESS
Posted inAstrobiology (general), Missions & Hardware
Corrected And Updated Version Of NASA’s Astrobiology Fleet Chart (update)
Editor’s note: This Astrobiology Fleet chart was shown by David Grinspoon and Shawn Domagal-Goldman on 22 Mar 2024 at an AAS Goddard Memorial Science Meeting. It is rather incomplete and […]
Posted inAstronomy & Telescopes, Citizen Science / Open Science, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
High School Students Contribute To Exoplanet Discovery
In a project aimed at democratizing science and fostering educational enrichment, a group of high school students from the Galaxy Explorer program at the Chabot Space & Science Center in […]
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 inAstrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
The Occurrence Of Small, Short-period Planets Younger Than 200 Myr With TESS
Within the first few hundreds of millions of years, many physical processes sculpt the eventual properties of young planets. NASA’s TESS mission has surveyed young stellar associations across the entire […]
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Status Report
Validation Of A Third Planet In The LHS 1678 System
The nearby LHS 1678 (TOI-696) system contains two confirmed planets and a wide-orbit, likely-brown-dwarf companion, which orbit an M2 dwarf with a unique evolutionary history. The host star occupies a […]
Posted inAstronomy & Telescopes, Comets and Asteroids, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Hunting For Exocomet Transits In The TESS Database Using The Random Forest Method
This study introduces an approach to detecting exocomet transits in the dataset of the Transiting Exoplanet Survey Satellite (TESS), specifically within its Sector 1. Given the limited number of exocomet […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Press Release
Young Earth-like Planet With Lava Oceans
Astronomers have discovered an extreme Earth-like planet that likely hosts lava oceans as it roasts next to its sun-like star near the Big Dipper constellation.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy
The Solar Neighborhood LI: A Variability Survey of Nearby M Dwarfs with Planets from Months to Decades with TESS and the CTIO/SMARTS 0.9 m
We present the optical photometric variability of 32 planet-hosting M dwarfs within 25 parsecs over timescales of months to decades. The primary goal of this project, ATLAS — A Trail […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
Metallicities and Refined Stellar Parameters for 52 Cool Dwarfs with Transiting Planets and Planet Candidates
We collected near-infrared spectra of 65 cool stars with the NASA InfraRed Telescope Facility (IRTF) and analyze them to calculate accurate metallicities and stellar parameters. The sample of 55 M […]