Limb Darkening and Planetary Transits: Testing Center-to-limb Intensity Variations and Limb-darkening Directly from Model Stellar Atmospheres [PDF]
, 2017 The transit method, employed by Microvariability and Oscillation of Stars (MOST), Kepler, and various ground-based surveys has enabled the characterization of extrasolar planets to unprecedented precision.
H. Neilson +3 more
semanticscholar +1 more source
Atoms, 2023 Stellar atmospheres separate the hot and dense stellar interiors from the emptiness of space. Radiation escapes from the outermost layers of a star, carrying direct physical information.
Carlos Allende Prieto
doaj +1 more source
The Interaction Between Accretion from the Interstellar Medium and Accretion from the Evolved Binary Component in Barium Stars [PDF]
Journal of Astronomy and Space Sciences, 2018 The reanalysis of the previously published abundance pattern of mild barium star HD202109 (ζ Cyg) and the chemical compositions of 129 thin disk barium stars facilitated the search for possible correlations of different stellar parameters with second ...
Yeuncheol Jeong +2 more
doaj +1 more source
Study of atmospheres in the solar system, from stellar occultation or planetary transit
Comptes Rendus. Physique, 2022 Stellar occultations and transits occur when a planetary body passes in front of a star (including our Sun). For objects with an atmosphere, refraction plays an essential role to explain the drops of flux and the aureoles observed during these events ...
Sicardy, Bruno
doaj +1 more source
Dust cloud evolution in sub-stellar atmospheres via plasma deposition and plasma sputtering [PDF]
, 2017 Context. In contemporary sub-stellar model atmospheres, dust growth occurs through neutral gas-phase surface chemistry. Recently, there has been a growing body of theoretical and observational evidence suggesting that ionisation processes can also occur.
Diver, D. A., Stark, C. R.
core +4 more sources
Effect of stellar flares on the upper atmospheres of HD 189733b and HD 209458b [PDF]
, 2017 Stellar flares are a frequent occurrence on young low-mass stars around which many detected exoplanets orbit. Flares are energetic, impulsive events, and their impact on exoplanetary atmospheres needs to be taken into account when interpreting transit ...
J. Chadney +5 more
semanticscholar +1 more source
The Stellar Activity of TRAPPIST-1 and Consequences for the Planetary Atmospheres [PDF]
, 2017 The signatures of planets hosted by M dwarfs are more readily detected with transit photometry and radial velocity methods than those of planets around larger stars.
R. Roettenbacher, S. Kane
semanticscholar +1 more source
New Methods in Modeling of Hot Stellar Atmospheres
Open Astronomy, 2013 In the present study we had three main aims. First to study the possibility of reducing the initial model atmosphere data to short analytical polynomials.
Sapar A., Poolamäe R., Sapar L.
doaj +1 more source
A Reduced-order NLTE Kinetic Model for Radiating Plasmas of Outer Envelopes of Stellar Atmospheres [PDF]
, 2016 The present work proposes a self-consistent reduced-order NLTE kinetic model for radiating plasmas found in the outer layers of stellar atmospheres. A detailed collisional-radiative kinetic mechanism is constructed by leveraging the most up-to-date set ...
A. Munafò, N. Mansour, M. Panesi
semanticscholar +1 more source
Simulation of the small-scale magnetism in main-sequence stellar atmospheres
Astronomy & Astrophysics, 2018 Context. Observations of the Sun tell us that its granular and subgranular small-scale magnetism has significant consequences for global quantities such as the total solar irradiance or convective blueshift of spectral lines. Aims.
R. Salhab +5 more
semanticscholar +1 more source