Results 11 to 20 of about 151,165 (141)

STEllAR-GROUP/octotiger: Kokkos kernels

open access: yes, 2021
What's Changed Branch by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/341 Add Zenodo DOI by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/342 Docu by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/347 Add ...
Biddiscombe, John   +10 more
core   +1 more source

The relative emission from chromospheres and coronae: dependence on spectral type and age [PDF]

open access: yes, 2020
Extreme-ultraviolet and X-ray emission from stellar coronae drives mass loss from exoplanet atmospheres, and ultraviolet emission from stellar chromospheres drives photochemistry in exoplanet atmospheres.
Buccino, Andrea P.   +38 more
core   +1 more source

DETECTION AND CHARACTERIZATION OF EXOPLANETS AROUND M DWARFS IN THE PRESENCE OF STELLAR ACTIVITY [PDF]

open access: yes, 2022
M dwarfs are the most numerous type of stars in the Universe. Their low masses and their large planet-to-star size ratios offer big advantages to study orbiting exoplanets around these stars.
Bluhm Ceballos, Paz Victoria
core   +1 more source

Modeling the Chromosphere and Transition Region of Planet-hosting Star GJ 436

open access: yesThe Astrophysical Journal, 2023
Ahead of upcoming space missions intending to conduct observations of low-mass stars in the ultraviolet (UV) spectral region it becomes imperative to simultaneously conduct atmospheric modeling from the UV to the visible (VIS) and near-infrared (NIR ...
Dominik Hintz   +14 more
doaj   +1 more source

Multiwavelength optical observations of chromospherically active binary systems [PDF]

open access: yes, 2007
Context.This is the fifth paper in a series aimed at studying the chromospheres of active binary systems using several optical spectroscopic indicators to obtain or improve orbital solution and fundamental stellar parameters.
Gálvez, M. C.   +9 more
core   +1 more source

New and Improved Lyα Reconstructions for M and K Dwarfs

open access: yesThe Astrophysical Journal, 2023
The Ly α emission line is the brightest UV emission line in M and K dwarf spectra and serves as an important tool for studies of stellar chromospheres, the interstellar medium, and exoplanet atmospheres.
Angeli Sandoval   +3 more
doaj   +1 more source

Propagation Dynamics of Fast Electron Beam and Its Electron Cyclotron Maser Emission

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Fast electron beams (FEBs) and coherent radio bursts both are very common plasma activity phenomena in the cosmos. The electron cyclotron maser (ECM) instability driven by FEBs trapped in magnetic fields can directly amplify radio wave radiations.
Ling Chen   +3 more
wiley   +1 more source

Summary of the Stellar Chromospheres Conference [PDF]

open access: yes, 1973
Studies on solar-type stellar chromospheres include diagnostic techniques, observations on different kinds of apparently existing chromospheres, enhancement dynamics of chromospheric activity, and interpretation of stellar spectroscopy with theoretical ...
Wilson, O. C.
core  

Physical Parameters and Chromospheric Activity of Eclipsing Binaries Observed by the LAMOST DR10 Survey

open access: yesThe Astrophysical Journal Supplement Series
In this study, we present a comprehensive study of more than 50,000 spectra of 32,257 eclipsing binaries from the LAMOST DR10 survey, including 5200 systems with spectroscopy.
Ansong Shi   +9 more
doaj   +1 more source

An Operational Daily‐Filtered Dominion Radio Astrophysical Observatory F10.7 cm Solar Radio Flux Product

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract The F10.7 solar radio flux density, or F10.7, is a disk‐integrated measure of the Sun's total emission at 10.7 cm (2.8 GHz) and is a widely‐used proxy of solar activity. F10.7 emissions primarily originate from the Sun's upper chromosphere and lower corona. High‐frequency, transient “radio bursts” can dramatically increase the magnitude of F10.
C. Kuester   +3 more
wiley   +1 more source

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