Symmetric Atom–Atom and Ion–Atom Processes in Stellar Atmospheres
Atoms, 2017 We present the results of the influence of two groups of collisional processes (atom–atom and ion–atom) on the optical and kinetic properties of weakly ionized stellar atmospheres layers.
Vladimir A. Srećković +2 more
doaj +2 more sources
Spherically symmetric model stellar atmospheres and limb darkening II: limb-darkening laws, gravity-darkening coefficients and angular diameter corrections for FGK dwarf stars [PDF]
, 2013 Limb darkening is a fundamental ingredient for interpreting observations of planetary transits, eclipsing binaries, optical/infrared interferometry and microlensing events.
Lester, John B., Neilson, Hilding R.
core +3 more sources
High Tide or Riptide on the Cosmic Shoreline? A Water-rich Atmosphere or Stellar Contamination for the Warm Super-Earth GJ 486b from JWST Observations [PDF]
The Astrophysical Journal Letters, 2023 Planets orbiting M-dwarf stars are prime targets in the search for rocky exoplanet atmospheres. The small size of M dwarfs renders their planets exceptional targets for transmission spectroscopy, facilitating atmospheric characterization.
Sarah E. Moran +23 more
doaj +2 more sources
Model atmospheres of sub-stellar mass objects [PDF]
, 2017 We present an outline of basic assumptions and governing structural equations describing atmospheres of substellar mass objects, in particular the extrasolar giant planets and brown dwarfs.
Hubeny, Ivan
core +2 more sources
Model atmospheres of irradiated exoplanets: The influence of stellar parameters, metallicity, and the C/O ratio [PDF]
, 2015 Many parameters constraining the spectral appearance of exoplanets are still poorly understood. We therefore study the properties of irradiated exoplanet atmospheres over a wide parameter range including metallicity, C/O ratio and host spectral type.
Dullemond, Cornelis Petrus +4 more
core +2 more sources
MPS-ATLAS Library of Stellar Model Atmospheres and Spectra [PDF]
Research Notes of the AAS, 2023 Stellar spectra contain a large amount of information about the conditions in stellar atmospheres. However, extracting this information is challenging and demands comprehensive numerical modeling.
N. Kostogryz +7 more
semanticscholar +1 more source
Effects of UV Stellar Spectral Uncertainty on the Chemistry of Terrestrial Atmospheres [PDF]
Astrophysical Journal, 2022 The upcoming deployment of the James Webb Space Telescope will dramatically advance our ability to characterize exoplanet atmospheres, both in terms of precision and sensitivity to smaller and cooler planets.
D. Teal +4 more
semanticscholar +1 more source
Stellar Wind Confinement of Evaporating Exoplanet Atmospheres and Its Signatures in 1083 nm Observations [PDF]
Astrophysical Journal, 2021 Atmospheric escape from close-in exoplanets is thought to be crucial in shaping observed planetary populations. Recently, significant progress has been made in observing this process in action through excess absorption in-transit spectra and narrowband ...
M. MacLeod, A. Oklopčić
semanticscholar +1 more source
Stellar wind effects on the atmospheres of close-in giants: a possible reduction in escape instead of increased erosion [PDF]
Monthly notices of the Royal Astronomical Society, 2020 The atmospheres of highly irradiated exoplanets are observed to undergo hydrodynamic escape. However, due to strong pressures, stellar winds can confine planetary atmospheres, reducing their escape.
A. Vidotto, A. Cleary
semanticscholar +1 more source
Helium Absorption at 1083 nm from Extended Exoplanet Atmospheres: Dependence on Stellar Radiation [PDF]
Astrophysical Journal, 2019 Strong absorption signatures in the helium line at 1083 nm have recently been detected in transmission spectra of several close-in exoplanets. This absorption line originates from neutral helium atoms in an excited, metastable 23S state.
A. Oklopčić
semanticscholar +1 more source