Results 11 to 20 of about 92,482 (301)
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 MOST, \emph{Kepler}, and various ground-based surveys has enabled the characterization of extrasolar planets to unprecedented precision.
Ignace, Richard +3 more
core +3 more sources
The Astrophysical Journal, 2023 We present the first isotopic abundances of both ^13 CO and C ^18 O in solar twin stars and test the results against several galactic chemical evolution (GCE) models with different nucleosynthesis prescriptions.
David R. Coria +5 more
doaj +1 more source
Odessa Astronomical Publications, 2013 Spectroscopic binaries remain a laboratory for testing the stellar atmosphere and the stellar evolution theories. It’s considering problems determination of parameters of components and their errous for example two spectroscopic binaries with the main ...
L. V. Glazunova
doaj +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 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
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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
Influence of stellar variability on the determination of the radius during a transit of an exoplanet
EPJ Web of Conferences, 2011 Stellar variability can affect the estimate of an exoplanet radius measured during a transit. We developed a transit light curve model which includes stellar spots.
Désert J.-M. +3 more
doaj +1 more source
The donor star of the X-ray pulsar X1908+075 [PDF]
, 2015 High-mass X-ray binaries (HMXBs) consist of a massive donor star and a compact object. While several of those systems have been well studied in X-rays, little is known for most of the donor stars as they are often heavily obscured in the optical and ...
Gímenez-García, Ángel +6 more
core +3 more sources