Over the past 30 years, thousands of exoplanets have been discovered, revealing detailed demographics of planets outside the Solar System.
astro-ph.EP
Posted inAnalog Studies, Astronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, Stellar Cartography
The JWST Search For Earth-Luna Analogs: Upper Limits On Exomoons And Refined Ephemerides For TOI 700 d And e
While no conclusive detections of exomoons have been reported to date, planet formation theories predict that satellites should be a common outcome of the collisional dynamics in early extrasolar systems.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Status Report
Study Of The Migration Of Earth-like Planets In Planetesimal Disks And The Formation Of Debris Disks
The aim of this study is to investigate the interaction of Earth-mass planets with a planetesimal disk.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Comets and Asteroids, Extinction events, Fossils & Paleontology, Gaia - Planetary Perspectives, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Origin & Evolution of Life, Status Report
The Zhamanshin Impact Event: Potential Implications for Environmental Responses and Biological Linkages on Earth and Beyond
At least one large-body (diameter > 1.1 km) hypervelocity cratering event occurred during ~ 0.8-0.90 Ma (Zhamanshin, Kazakhstan) in the Middle Pleistocene Transition period.
Posted inExoplanets, -moons, -comets, Gas Giants, Icy Worlds, Status Report
POSEIDON II: The Anti-Aligned Orbit of the Warm Neptune TOI-1710 A b
We present an observation of the Rossiter-McLaughlin effect for the warm-Neptune system TOI-1710 obtained with the NEID spectrograph on the WIYN 3.5 m telescope.
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Influence Of CO Versus CH4 On Organic Haze Formation In Atmospheres Of Diverse Terrestrial Exoplanets
Context. Terrestrial exoplanets are expected to host secondary, high-metallicity atmospheres derived from outgassing of volatiles such as N2, CO2, H2O, CH4, and CO. Photochemical organic hazes are likely to form […]
Posted inAnalog Studies, Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Status Report
CO and N2 Produced from H2O, CO2, and NH3 Cometary Ice Analogs
Hypervolatile species such as carbon monoxide (CO) and molecular nitrogen (N2) have been detected in comets, and could be used to constrain comet formation temperature conditions if their presence is […]
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 inAstrogeology, Exoplanets, -moons, -comets, Status Report, Stellar Cartography
The Role Of Inner Disk Edges In Shaping Ultra-short-period Planet Systems Around Late M Dwarfs
Close-in rocky planets are the most common type of exoplanets around late M dwarfs, ranging from more temperate worlds to highly irradiated lava planets with molten surfaces, and many theoretical […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Status Report, Water/Hycean Worlds & Oceanography
Unusually Hot Interiors Could Reconcile the Missing Methane Problem for Warm-to-Hot Exoplanets with Hydrogen Atmospheres
JWST is revolutionizing the field of exoplanet atmospheres by delivering unprecedented spectroscopic constraints on their chemical compositions. It has provided tight constraints on the abundances of dominant carbon- and oxygen-bearing […]