Jupiter Family Comets (JFCs), having orbital period less than 20 years, provide us with an opportunity to observe their activity and analyse the homogeneity in their coma composition over multiple […]
Spectroscopy
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Imaging & Spectroscopy, Interstellar, Status Report
A Deep Search For Large Complex Organic Species Toward IRAS16293-2422 B At 3 mm With ALMA
Complex organic molecules (COMs) have been detected ubiquitously in protostellar systems. However, at shorter wavelengths (~0.8mm) it is more difficult to detect larger molecules than at longer wavelengths (~3mm) because […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Status Report, Water/Hycean Worlds & Oceanography
Distinguishing Oceans Of Water From Magma On Mini-Neptune K2-18b
Mildly rradiated mini-Neptunes have densities potentially consistent with them hosting substantial liquid water oceans (`Hycean’ planets).
Posted inAriel Mission, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
ARES VI: Viability Of One-dimensional Retrieval Models For Transmission Spectroscopy Characterization Of Exo-atmospheres In The Era Of JWST And Ariel
Observed exoplanet transit spectra are usually retrieved using 1D models to determine atmospheric composition while planetary atmospheres are 3D.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Interstellar, Status Report
Water Transport Through Mesoporous Amorphous-carbon Dust
The diffusion of water molecules through mesoporous dust of amorphous carbon (a-C) is a key process in the evolution of prestellar, protostellar, and protoplanetary dust, as well as in that […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Ice Giant, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Neptune, Press Release, Uranus
Calibrating Instruments For Exoplanets: What Neptune And Uranus Really Look Like
Neptune is fondly known for being a rich blue and Uranus green – but a new study has revealed that the two ice giants are actually far closer in colour […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Elusive Atmosphere Of WASP-12 b / High-resolution Transmission Spectroscopy With CARMENES
To date, the hot Jupiter WASP-12 b has been the only planet with confirmed orbital decay. The late F-type host star has been hypothesized to be surrounded by a large […]
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Status Report
Dust And Volatiles In The Disintegrating Comet C/2019 Y4 (ATLAS)
C/2019 Y4 (ATLAS) is an Oort cloud comet with an orbital period of ∼5895yr. Starting in March 2020, its nucleus underwent disintegration.
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Status Report
Detection And Characterisation Of Icy Cavities On The Nucleus Of Comet 67P/Churyumov-Gerasimenko
We report on the detection of three icy cavities on the nucleus of comet 67P/Churyumov-Gerasimenko. They were identified on high-resolution anaglyphs built from images acquired by the OSIRIS instrument aboard […]
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Status Report
Inferring the CO2 Abundance in Comet 45P/Honda-Mrkos-Pajdušáková from [O I] Observations: Implications for the Source of Icy Grains in Cometary Comae
The study of cometary composition is important for understanding our solar system’s early evolutionary processes. Carbon dioxide (CO2) is a common hypervolatile in comets that can drive activity but is […]