Results 51 to 60 of about 43,339 (292)
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
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
Molecular Oncology, Volume 20, Issue 6, Page 1535-1555, June 2026.Single circulating tumor cells (sCTCs) from high‐grade serous ovarian cancer patients were enriched, imaged, and genomically profiled using WGA and NGS at different time points during treatment. sCTCs revealed enrichment of alterations in Chromosomes 2, 7, and 12 as well as persistent or emerging oncogenic CNAs, supporting sCTC identity.
Carolin Salmon +9 more
wiley +1 more source
Study of Compton Broadening Due to Electron-Photon Scattering [PDF]
Serbian 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
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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Living with a Red Dwarf: X-Ray, UV, and Ca ii Activity–Age Relationships of M Dwarfs
The Astrophysical Journal, 2023 The vast majority of stars in the nearby stellar neighborhood are M dwarfs. Their low masses and luminosities result in slow rates of nuclear evolution and minimal changes to the stars’ observable properties, even along astronomical timescales.
Scott G. Engle
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Constraining Stellar Winds of Young Sun-like Stars
, 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
How does the shape of the stellar spectrum affect the Raman scattering features in the albedo of exoplanets? [PDF]
, 2017 Diagnostic potential of the spectral signatures of Raman scattering imprinted in planetary albedo spectra at short optical wavelengths has been demonstrated in research on Solar System planets and has recently been proposed as a probe of exoplanet ...
Heng, Kevin +2 more
core +2 more sources
The Application of Mesoturbulence to Stellar Atmospheres [PDF]
International Astronomical Union Colloquium, 1980 AbstractFor realistic stellar atmospheres the equations describing mesoturbulent line formation are solved numerically. The general dependence of theoretical line profiles and equivalent widths on the correlation length 1 and the mean square turbulent velocity a is demonstrated.
openaire +1 more source
Molecular Oncology, Volume 20, Issue 6, Page 1591-1611, June 2026.Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee +8 more
wiley +1 more source