The Stagger-grid: A Grid of 3D Stellar Atmosphere Models V. Fe line shapes, shifts and asymmetries ⋆ [PDF]
, 2013 Aims. We present a theoretical study of the effects and signatures of realistic velocity field and atmosphe ric inhomogeneities associated with convective motions at the surface of cool late-type stars on the emergent profiles of iron spectral lines for ...
Z. Magic, R. Collet, M. Asplund
semanticscholar +1 more source
NASA Global Daily Downscaled Projections, CMIP6
Scientific Data, 2022 Measurement(s) temperature of air • volume of hydrological precipitation • humidity • stellar radiation • atmospheric wind speed Technology Type(s) statistical downscaling Sample Characteristic - Environment ...
Bridget Thrasher +5 more
doaj +1 more source
Stratospheric temperature measurements from nanosatellite stellar occultation observations of refractive bending [PDF]
Atmospheric Measurement Techniques, 2023 Stellar occultation observations from space can probe the stratosphere and mesosphere at a fine vertical scale around the globe. Unlike other measurement techniques like radiosondes and aircraft, stellar occultation has the potential to observe the ...
D. L. McGuffin +8 more
doaj +1 more source
The Stagger-grid: A grid of 3D stellar atmosphere models - II. Horizontal and temporal averaging and spectral line formation [PDF]
, 2013 Aims. We study the implications of averaging methods with different reference depth scales for 3D hydrodynamical model atmo- spheres computed with the Stagger-code.
Z. Magic +3 more
semanticscholar +1 more source
The spectroscopic study of M8.5-M9.5 stars and brown dwarfs
EPJ Web of Conferences, 2013 We present high-resolution spectra analysis of the three late-M dwarfs LP944-20, SIPS J2045-6332 and DENIS-P J0021.0-4244. The stellar spectra were observed with Very Large Telescope/Ultraviolet–Visual Echelle Spectrograph (VLT/UVES) in optical and near ...
Pavlenko Y.V. +2 more
doaj +1 more source
PLUTO’s ATMOSPHERE FROM STELLAR OCCULTATIONS IN 2012 AND 2013 [PDF]
, 2015 We analyze two multi-chord stellar occultations by Pluto that were observed on 2012 July 18th and 2013 May 4th, and respectively monitored from five and six sites. They provide a total of fifteen light curves, 12 of which were used for a simultaneous fit
A. Dias-Oliveira +44 more
semanticscholar +1 more source
MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA) [PDF]
, 2010 Stellar physics and evolution calculations enable a broad range of research in astrophysics. Modules for Experiments in Stellar Astrophysics (MESA) is a suite of open source, robust, efficient, thread-safe libraries for a wide range of applications in ...
B. Paxton +5 more
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
The Space Environment and Atmospheric Joule Heating of the Habitable Zone Exoplanet TOI700-d
, 2020 We investigate the space environment conditions near the Earth-size planet TOI~700~d using a set of numerical models for the stellar corona and wind, the planetary magnetosphere, and the planetary ionosphere.
Alvarado-Gomez, J. +6 more
core +1 more source
A NEW GENERATION OF PARSEC-COLIBRI STELLAR ISOCHRONES INCLUDING THE TP-AGB PHASE [PDF]
, 2017 We introduce a new generation of PARSEC–COLIBRI stellar isochrones that includes a detailed treatment of the thermally pulsing asymptotic giant branch (TP-AGB) phase, covering a wide range of initial metallicities (0.0001 < Zi < 0.06).
P. Marigo +15 more
semanticscholar +1 more source