Context. Understanding the optical properties of astrophysical ices is crucial for modeling dust continuum emission and radiative transfer in cold, dense interstellar environments. Molecular nitrogen (N2), a major nitrogen reservoir […]
Protoplanetary Disk
Posted inAstrogeology, Exoplanets, -moons, -comets, Status Report
Formation Of Multi-planetary Systems Via Pebble Accretion In Externally Photoevaporating Discs In Stellar Clusters
In this paper, we investigate how external photo-evaporation influences the formation, dynamical evolution and the resultant planetary architecture of multi-planet systems born in stellar clusters.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Interstellar, Status Report
Protoplanetary Disk Cavities With JWST-MIRI: A Dichotomy In Molecular Emission
The evolution of planet-forming regions in protoplanetary disks is of fundamental importance to understanding planet formation. Disks with a central deficit in dust emission, a “cavity”, have long attracted interest […]
Posted inAstrogeology, Exoplanets, -moons, -comets, Habitable Zones, Press Release
Two-source Terrestrial Planet Formation With A Sweeping Secular Resonance
The models that most successfully reproduce the orbital architecture of the Solar System terrestrial planets start from a narrow annulus of material that grows into embryos and then planets.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Interstellar, Press Release
Hubble Reveals The Largest Chaotic Birthplace of Planets Yet Discovered
Astronomers using NASA’s Hubble Space Telescope have imaged the largest protoplanetary disk ever observed circling a young star. For the first time in visible light, Hubble has revealed the disk […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Observational Evidence For A Possible Link Between PAH Emission And Dust Trap Locations In Protoplanetary Disks
Polycyclic Aromatic Hydrocarbons (PAHs) are commonly detected in protoplanetary disks, but it is unclear what causes the wide range of intensities across the samples.
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Comets and Asteroids, Imaging & Spectroscopy, Meteorites & Asteroids, Missions & Hardware, Sample Return, Status Report
The Variety And Origin Of Materials Accreted By Bennu’s Parent Asteroid
The first bodies to form in the Solar System acquired their materials from stars, the presolar molecular cloud and the protoplanetary disk.
Posted inAstrogeology, Imaging & Spectroscopy, Press Release, Stellar Cartography
Bridging Stellar Evolution And Planet Formation: From Birth, To Survivors Of The Fittest, To The Second Generation Of Planets
Stars and planets form, live, and evolve in unison. Throughout the life of a star, dusty circumstellar discs and stellar outflows influence the further evolution of both the star(s) and […]
Posted inAstrogeology, Astronomy & Telescopes, Comets and Asteroids, Exoplanets, -moons, -comets, Fomalhaut, Imaging & Spectroscopy, Press Release, Stellar Cartography
Hubble Sees Asteroids Colliding at Nearby Star for First Time
Like a game of cosmic bumper cars, scientists think the early days of our solar system were a time of violent turmoil, with planetesimals, asteroids, and comets smashing together and […]
Posted inAstrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Gaia Mission, Imaging & Spectroscopy, Press Release
Gaia Finds Hints Of Planets In Baby Star Systems
Ever wondered how planetary systems like our own Solar System form? Thanks to the European Space Agency’s Gaia space telescope, we’re getting a unique peek behind the cosmic curtain into […]