The detection of exoplanets with the radial velocity method consists in detecting variations of the stellar velocity caused by an unseen sub-stellar companion.
astro-ph.EP
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Neptune, Status Report
A Super-Earth And A Mini-Neptune Near The 2:1 MMR Straddling The Radius Valley Around The Nearby Mid-M Dwarf TOI-2096
Several planetary formation models have been proposed to explain the observed abundance and variety of compositions of super-Earths and mini-Neptunes.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Status Report
Free-Floating Planet Mass Function from MOA-II 9-year Survey Towards The Galactic Bulge
We present the first measurement of the mass function of free-floating planets (FFP) or very wide orbit planets down to an Earth mass, based on microlensing data from the MOA-II […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Status Report
Spatially Resolving PAHs in Herbig Ae Disks with VISIR-NEAR at the VLT
We use the long-slit spectroscopy mode of the VISIR-NEAR experiment to perform diffraction-limited observations of eight nearby Herbig Ae protoplanetary disks.
Posted inAstrochemistry, Astronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Status Report
Classifying Protoplanetary Disk Infrared Spectra For Possible Templates For Biological Molecules
Protoplanetary disk around a just born young star contains a lot of cosmic dust. especially polycyclic-aromatic-hydrocarbon (PAH), which would become basic component to create biological organics.
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Meteorites & Asteroids, Status Report
Origin Of Isotopic Diversity Among Carbonaceous Chondrites
Carbonaceous chondrites are some of the most primitive meteorites and derive from planetesimals that formed a few million years after the beginning of the solar system.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report
Impact of Changing Stellar and Planetary Magnetic Fields on (Exo)planetary Environments and Atmospheric Mass Loss
The magnetic activity of a star — which modulates the stellar wind outflow — shapes the immediate environments of orbiting planets and induces atmospheric loss thereby impacting their habitability.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release, Venus
Large Interferometer For Exoplanets (LIFE): X. Assessing the Impact of Clouds on Atmospheric Retrievals at Mid-Infrared Wavelengths with a Venus-Twin Exoplanet
The Large Interferometer For Exoplanets (LIFE) initiative aims to develop a space based mid-infrared (MIR) nulling interferometer to measure the thermal emission spectra of temperate terrestrial exoplanets.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report
Multiverse Predictions For Habitability: Stellar And Atmospheric Habitability
Stellar activity and planetary atmospheric properties have the potential to strongly influence habitability. To date, neither have been adequately studied in the multiverse context, so there has been no assessment […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Status Report
The Influence Of Tidal Heating On The Habitability Of Planets Orbiting White Dwarfs
In recent years, there have been a growing number of observations indicating the presence of rocky material in short-period orbits around white dwarfs. In this Letter, we revisit the prospects […]