The James Webb Space Telescope (JWST) has revolutionized the characterization of exoplanetary atmospheres, offering unprecedented sensitivity to probe their chemical and physical properties.
astronomy
Posted inAstrochemistry, Astronomy & Telescopes, Imaging & Spectroscopy, Status Report, Stellar Cartography
Stellar Population Astrophysics (SPA) With The TNG. CNO Abundances In 28 Open Clusters
Aims. Our main aim with this work was to enlarge the pool of open clusters with determined carbon, nitrogen, and oxygen abundances in evolved giants to further advance chemical clocks […]
Posted inAstrochemistry, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gas Giants, Ice Giant, Imaging & Spectroscopy, Press Release
NASA’s Roman Mission Preps to Unveil New Populations of Faraway Worlds
NASA’s Nancy Grace Roman Space Telescope is poised to make a major leap in the hunt for worlds outside our solar system, known as exoplanets. Scientists expect the mission to […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
Survival Of Very Small Carbonaceous Dust Grains In The Inner-CGM Of NGC 891 From JWST/MIRI MRS
We present new spectroscopic observations of the inner circumgalactic medium (CGM) of NGC 891 taken with the Mid-Infrared Imager/Medium Resolution Spectroscopy instrument onboard JWST, in four positions: two near the […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Status Report, Stellar Cartography
Dynamical Stability and Habitability in the HD 20794 System
The Keplerian orbit of a terrestrial planet can be a significant driver in the evolution of surface conditions, as well as influencing the overall dynamics of the system.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
From Hubble to HWO: Bridging the Frontier of White Dwarf Exoplanet Science
White dwarf stars, the endpoint of stellar evolution for 97% of stars in our Milky Way, offer a unique and powerful window into the bulk elemental composition of rocky exoplanetary […]
Posted inAlpha Centauri, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report, Stellar Cartography
Near UV Stellar Activity and Brightness Fluctuations of the Alpha Centauri AB Star System from Weeks to Decades — Inputs for Reflected Light Spectroscopy with HWO
We present the most comprehensive near-ultraviolet (NUV: 2550-3255 Angstrom) activity record to date for the Alpha Centauri AB system, combining archival IUE and HST observations spanning nearly five decades with […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Ice Giant, Neptune, Status Report
Latitudinal Variations In Neptune’s Temperature Profile Observed With ALMA
Despite the low solar irradiation it receives, Neptune shows a very active atmosphere with some of the most intense dynamics observed in Solar System atmospheres. Characterizing the atmospheric temperature profiles […]
Posted inAstrochemistry, Habitable Zones, Status Report
The Habitability Trade-off: Chemical Decoupling And Quenching In Massive Galaxies
Massive galaxies experience complex evolutionary processes, including mergers and gas accretion, which can disrupt the chemical equilibrium between their stellar and gaseous components.
Posted inAlpha Centauri, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Proxima Centauri, Radiation, Space Weather & Heliophysics, Status Report
Star-planet Interaction In The Proxima System
(Abridged) We search for evidence of star-planet magnetic interactions in the nearby Proxima Centauri planetary system using high-quality, high-spectral-resolution optical observations.