Results 71 to 80 of about 882,024 (358)

Limb darkening and exoplanets: testing stellar model atmospheres and identifying biases in transit parameters [PDF]

open access: yes, 2015
Limb-darkening is fundamental in determining transit lightcurve shapes, and is typically modeled by a variety of laws that parametrize the intensity profile of the star that is being transited.
N. Espinoza, A. Jord'an
semanticscholar   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Study of Compton Broadening Due to Electron-Photon Scattering [PDF]

open access: yesSerbian Astronomical Journal, 2010
We have investigated the effects of Compton broadening due to electron-photon scattering in hot stellar atmospheres. A purely electron-photon scattering media is assumed to have plane parallel geometry with an input radiation field localized on one ...
Srinivasa Rao, M.
doaj   +3 more sources

A New High-Precision Correction Method of Temperature Distribution in Model Stellar Atmospheres

open access: yesOpen Astronomy, 2013
The main features of the temperature correction methods, suggested and used in modeling of plane-parallel stellar atmospheres, are discussed. The main features of the new method are described.
Sapar A., Poolamäe R., Sapar L.
doaj   +1 more source

Energy Conservation and Gravity Waves in Sound-proof Treatments of Stellar Interiors: Part I Anelastic Approximations

open access: yes, 2012
Typical flows in stellar interiors are much slower than the speed of sound. To follow the slow evolution of subsonic motions, various sound-proof equations are in wide use, particularly in stellar astrophysical fluid dynamics.
Almgren   +28 more
core   +1 more source

Comparison of Theoretical Starburst Photoionisation Models for Optical Diagnostics [PDF]

open access: yes, 2019
We study and compare different examples of stellar evolutionary synthesis input parameters used to produce photoionisation model grids using the MAPPINGS V modelling code.
Byler, Nell   +7 more
core   +2 more sources

Stellar flares [PDF]

open access: yesLiving Reviews in Solar Physics
Magnetic storms on stars manifest as remarkable, randomly occurring changes of the luminosity over durations that are tiny in comparison to the normal evolution of stars.
A. Kowalski
semanticscholar   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Coronal Loops with Different Metallicities and Generalized RTV Scaling Laws

open access: yesThe Astrophysical Journal, 2023
Stellar metallicity is a critical factor to characterize the stellar coronae because it directly affects the radiative energy loss from the atmosphere.
Haruka Washinoue, Takeru K. Suzuki
doaj   +1 more source

Constraining Stellar Winds of Young Sun-like Stars

open access: yes, 2013
As part of the project Pathways to Habitability (http://path.univie.ac.at/), we study the properties of the stellar winds of low-mass and Sun-like stars, and their influences on the atmospheres of potentially habitable planets.
Fichtinger, Bibiana   +3 more
core   +1 more source

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