GJ 877 is a bright M dwarf in the solar neighborhood with two currently reported nontransiting exoplanets with periods of 9 d and 21 d, along with an additional unconfirmed […]
astro-ph.EP
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Hidden Gems In TESS: Sherlock Finds Two New Rocky Planets Around Nearby M Dwarfs
The Hidden Gems project searches the TESS data for additional planets transiting low-mass stars in confirmed systems. Our goal is to identify planet candidates that are below the detection threshold […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Status Report
Sulfur Enrichment In Close-in Exoplanet Atmospheres Induced By Pebble Drift Across The Salt Line
Observations of JWST have revealed that several close-in exoplanets have sulfur-rich atmospheres through SO2 detections. Atmospheric sulfur is often thought to originate from solid accretion during planet formation, whereas recent […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
A New Strategy For Using Spectroscopic Phase Curves to Characterize Non-Transiting Planets
We introduce a new time-series analysis strategy for combined-light exoplanet spectroscopic phase curves called the Variable Planetary Infrared Excess (VPIE) method. VPIE can be used to extract information about the […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, TRAPPIST-1
The Third Option: Color Phase Curves to Characterize the Atmospheres of Temperate Rocky Exoplanets
Detecting and characterizing the atmospheres of rocky exoplanets has proven to be challenging for JWST. Transit spectroscopy of the TRAPPIST-1 planets has been impacted by the effects of spots and […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Status Report
The Effects Of Non-ideal Mixing In Planetary Magma Oceans And Atmospheres
Sub-Neptunes with hydrogen-rich envelopes are expected to sustain long-lived magma oceans that continuously exchange volatiles with their overlying atmospheres. Capturing these interactions is key to understanding the chemical evolution and […]
Posted inAstronomy & Telescopes, Beta Pictoris, Comets and Asteroids, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Status Report
Visual Inspection Of Potential Exocomet Transits Identified Through Machine Learning And Statistical Methods
In this work, we explore several ways to detect possible exocomet transits in the TESS (The Transiting Exoplanet Survey Satellite) light curves. The first one has been presented in our […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Status Report, Water/Hycean Worlds & Oceanography
Habitability Of Tidally Heated H2-Dominated Exomoons Around Free-Floating Planets
Exomoons around free-floating planets (FFPs) can survive their host planet’s ejection. Such ejections can increase their orbital eccentricity, providing significant tidal heating in the absence of any stellar energy source.
Posted inAI - Data - Apps - Cybernetics, Astronomy & Telescopes, Exoplanets, -moons, -comets, Status Report, Stellar Cartography
ExoDNN: Boosting Exoplanet Detection With Artificial Intelligence. Application to Gaia Data Release 3
We combine Gaia Data Release 3 and artificial intelligence to enhance the current statistics of substellar companions, particularly within regions of the orbital period vs. mass parameter space that remain […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Imaging Venus-like Worlds: Spectral, Polarimetric, And UV Diagnostics For The Habitable Worlds Observatory
Understanding planetary habitability requires a comparative approach that explores the divergent evolutionary outcomes of Earth and Venus.