Results 61 to 70 of about 6,001 (306)
Central flashes during stellar occultations
Astronomy & AstrophysicsContext. Central flashes may occur during stellar occultations by objects in the Solar System. Aims. Catalog diffraction effects on the flash with point-like stars, monochromatic waves, and different cases of spherical transparent atmosphere; describe ...
Sicardy B., Dettwiller L.
doaj +1 more source
The Astrophysical Journal Letters, 2023 JWST secondary eclipse observations of Trappist-1b seemingly disfavor atmospheres >∼1 bar since heat redistribution is expected to yield dayside emission temperature below the ∼500 K observed.
Joshua Krissansen-Totton
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Diagnostics for regions of formation of atomic lines in stellar atmospheres [PDF]
, 2011 We present a procedure to make direct diagnostics of the physical conditions of the regions of formation of the atomic spectral lines in stellar atmospheres using the atomic line widths at half maximum and the number of lines visible of a given atomic ...
Lino Héctor Rodríguez Merino +1 more
core
The Influences of Stellar Activity on Planetary Atmospheres [PDF]
, 2016 On evolutionary timescales, the atmospheres of planets evolve due to interactions with the planet's surface and with the planet's host star. Stellar X-ray and EUV (=’XUV’) radiation is absorbed high in the atmosphere, driving photochemistry, heating the ...
Colin P. Johnstone
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Molecular Oncology, EarlyView.Ixazomib inhibits proteasome‐mediated degradation of topoisomerase I induced by irinotecan, thereby restoring drug sensitivity and promoting tumor cell death in colorectal cancer. Irinotecan, a topoisomerase I (topoI) inhibitor, is widely used for colorectal cancer, but resistance remains a major clinical challenge.
Yuho Ebata +10 more
wiley +1 more source
Microlensing and the physics of stellar atmospheres [PDF]
, 2001 The simple physics of microlensing provides a well understood tool with which to probe the atmospheres of distant stars in the Galaxy and Local Group with high magnification and resolution.
Sackett, PD
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An Empirical Sample of Spectra of M-type Stars with Homogeneous Atmospheric-parameter Labels
The Astrophysical Journal Supplement SeriesThe discrepancies between theoretical and observed spectra, and the systematic differences between various spectroscopic parameter estimates, complicate the determination of atmospheric parameters of M-type stars.
Bing Du +8 more
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Stark broadening parameter tables for neutral calcium spectral lines. I [PDF]
Serbian Astronomical Journal, 1999 Using a semiclassical approach, we have calculated electron−, proton−, He II−, Mg II-, Si II- and Fe II-impact line widths and shifts for 189 Ca I multiplets as a function of temperature.
Dimitrijević M.S., Sahal−Bréchot S.
doaj +1 more source
A study of U Aquarii and the nucleosynthesis of neutrons and S-process elements in evolved stars of low mass [PDF]
, 2014 The origin of the extreme hydrogen deficiency observed in the R Coronae Borealis (RCrB) stars remains poorly understood. A likely mechanism for producing this deficiency is one whereby the original hydrogen envelope of the star is engulfed and ...
Malaney, Robert A.
core
The future of stellar model atmospheres: macroscopic nightmares? [PDF]
, 2004 Stellar atmospheres represent unique windows for understanding stellar, galactic and cosmic evolution by being responsible for the emission of stellar spectra.
M. Asplund
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