Výsledky vyhledávání - "STELLAR ATMOSPHERES"

Influence of Collisions with Hydrogen Atoms on Non-LTE Effects for K I and Ca II in Stellar Atmospheres Autor Neretina, M. D., Mashonkina, L. I., Sitnova, T. M., Yakovleva, S. A., Belyaev, A. K.

“… In agreement with the non-LTE studies available in the literature, K I is subject to overrecombination, which leads to a strengthening…”
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How Hospitable Are Space Weather Affected Habitable Zones? The Role of Ion Escape Autor Airapetian, Vladimir S., Glocer, Alex, Khazanov, George V., Loyd, R. O. P., France, Kevin, Sojka, Jan, Danchi, William C., Liemohn, Michael W.

“…Atmospheres of exoplanets in the habitable zones around active young G-K-M stars are subject to extreme X-ray and EUV (XUV…”
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Measuring and Replicating the 1–20 μm Energy Distributions of the Coldest Brown Dwarfs: Rotating, Turbulent, and Nonadiabatic Atmospheres Autor Leggett, S. K., Tremblin, Pascal, Phillips, Mark W., Dupuy, Trent J., Marley, Mark, Morley, Caroline, Schneider, Adam, Caselden, Dan, Guillaume, Colin, Logsdon, Sarah E.

“…Cold, low-mass, field brown dwarfs are important for constraining the terminus of the stellar mass function, and also for optimizing atmospheric studies of…”
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TRANSMISSION SPECTROSCOPY OF THE HOT JUPITER WASP-12b FROM 0.7 TO 5 μm Autor Stevenson, Kevin B., Bean, Jacob L., Seifahrt, Andreas, Désert, Jean-Michel, Madhusudhan, Nikku, Bergmann, Marcel, Kreidberg, Laura, Homeier, Derek

“…Since the first report of a potentially non-solar carbon-to-oxygen ratio (C/O) in its dayside atmosphere, the highly irradiated exoplanet WASP-12b has been under intense scrutiny and the subject of many follow-up observations…”
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XUV-driven mass loss from extrasolar giant planets orbiting active stars Autor Chadney, J.M., Galand, M., Unruh, Y.C., Koskinen, T.T., Sanz-Forcada, J.

“…•EGPs around more active stars have stability limit at larger orbital distances. Upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape…”
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Investigating Non-LTE Abundances of Neodymium in Metal-poor FGK Stars Autor Dixon, John D., Ezzeddine, Rana, Li, Yangyang, Merle, Thibault, Bautista, Manuel, Guo, Yanjun

“…The dominant site(s) of the r-process are a subject of current debate. Ejecta from r-process-enrichment events like kilonovae are difficult to directly measure…”
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FORMATION OF SOLAR FILAMENTS BY STEADY AND NONSTEADY CHROMOSPHERIC HEATING Autor Xia, C

“…It has been established that cold plasma condensations can form in a magnetic loop subject to localized heating of its footpoints…”
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Deconstructing Photospheric Spectral Lines in Solar and Stellar Flares Autor Monson, Aaron J., Mathioudakis, Mihalis, Kowalski, Adam F.

“…/stellar atmosphere to electron beam heating and synthesize spectral lines of Fe i to investigate the line…”
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Photoionization of Atoms

“…Photoionization is a process of ionization by photons. It is one of the most important processes for studying astronomical objects. This Special Issue will…”
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THE EFFECTS OF THE IONOSPHERE ON GROUND-BASED DETECTION OF THE GLOBAL 21 cm SIGNAL FROM THE COSMIC DAWN AND THE DARK AGES Autor Datta, Abhirup, Bradley, Richard, Burns, Jack O., Harker, Geraint, Komjathy, Attila, Lazio, T. Joseph W.

“…ABSTRACT Detection of the global H i 21 cm signal from the Cosmic Dawn and the Epoch of Reionization is the key science driver for several ongoing ground-based…”
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Direct Observation of the Radial Magnetic Field Gradient in HD 58260 from Spectropolarimetry of NLTE Lines in Emission Autor Giarrusso, Marina

“…Because of the unquestionable presence of magnetic fields in stars, their role in the structure of stellar atmospheres has for a long time been a subject of speculation…”
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On the formation of super-Jupiters: core accretion or gravitational instability? Autor Nguyen, Max, Adibekyan, Vardan

“… However, the formation of super-massive planets remains a subject of debate, as their formation via the Core Accretion model requires super-solar metallicities…”
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COMMISSION 36: THEORY OF STELLAR ATMOSPHERES Autor Landstreet, John D., Asplund, Martin, Spite, Monique, Balachandran, Suchitra B., Berdyugina, Svetlana V., Hauschildt, Peter H., Ludwig, Hans G., Mashonkina, Lyudmila I., Nagendra, K. N., Puls, Joachim, Randich, M. Sofia, Tautvaisiene, Grazina

“…Commission 36 covers the whole field of the physics of stellar atmospheres. The scientific activity in this large subject has been very intense during the last…”
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Numerical Modeling of Footpoint-driven Magneto-acoustic Wave Propagation in a Localized Solar Flux Tube Autor Fedun, V, Shelyag, S, Erdélyi, R

“…In this paper, we present and discuss results of two-dimensional simulations of linear and nonlinear magneto-acoustic wave propagation through an open magnetic…”
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A Reconnecting Current Sheet Imaged in a Solar Flare Autor Liu, Rui, Lee, Jeongwoo, Wang, Tongjiang, Stenborg, Guillermo, Liu, Chang, Wang, Haimin

“… For flares and coronal mass ejections (CMEs) in the solar atmosphere, the standard model predicts the presence of a reconnecting current sheet, which has been the subject of considerable theoretical and numerical modeling over the last 50 years…”
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VERTICAL STRUCTURE OF MAGNETIZED ACCRETION DISKS AROUND YOUNG STARS Autor Lizano, S., Tapia, C., Boehler, Y., D'Alessio, P.

“…ABSTRACT We model the vertical structure of the magnetized accretion disks that are subject to viscous and resistive heating and irradiation by the central star…”
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SPECTROSCOPIC METALLICITY DETERMINATIONS FOR W UMa-TYPE BINARY STARS Autor Rucinski, Slavek M., Pribulla, Theodor, Budaj, Ján

“… relatively low quality of the data, all spectra were subject to the same broadening function (BF) processing to determine the combined line strength in the spectral window centered on the Mg I triplet between 5080 A and 5285…”
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The Role Of Torsional Alfvén Waves in Coronal Heating Autor Antolin, P, Shibata, K

“…In the context of coronal heating, among the zoo of magnetohydrodynamic (MHD) waves that exist in the solar atmosphere, Alfven waves receive special attention…”
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NON-AXISYMMETRIC FLOWS ON HOT JUPITERS WITH OBLIQUE MAGNETIC FIELDS Autor Batygin, Konstantin, Stanley, Sabine

“…Giant planets that reside in close proximity to their host stars are subject to extreme irradiation, which gives rise to thermal ionization of trace alkali metals in their atmospheres…”
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NUMERICAL EXPERIMENTS ON THE TWO-STEP EMERGENCE OF TWISTED MAGNETIC FLUX TUBES IN THE SUN Autor Toriumi, S., Yokoyama, T.

“… We find that the evolution is illustrated by the following two-step process. The initial tube rises due to its buoyancy, subject to aerodynamic drag due to the external flow…”
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