Zobrazeno 1 - 10
of 16 597
pro vyhledávání: '"Stellar atmosphere"'
Autor:
Eitner, Philipp, Bergemann, Maria, Hoppe, Richard, Nordlund, Åke, Plez, Bertrand, Klevas, Jonas
Large-scale stellar surveys, such as SDSS-V, 4MOST, WEAVE, and PLATO, require accurate atmospheric models and synthetic spectra of stars for accurate analyses of fundamental stellar parameters and chemical abundances. The primary goal of our work is
Externí odkaz:
http://arxiv.org/abs/2405.06338
Akademický článek
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Autor:
Hindman, Bradley W., Jain, Rekha
Publikováno v:
ApJ, 943, 127 (2023)
Within the convection zone of a rotating star, the presence of the Coriolis force stabilizes long-wavelength convective modes. These modes, which would have been unstable if the star lacked rotation, are called overstable convective modes or thermal
Externí odkaz:
http://arxiv.org/abs/2305.07064
Autor:
Claret, A., Southworth, J.
Multiple parametric limb-darkening laws have been presented, and there are many available sources of theoretical limb-darkening coefficients (LDCs) calculated using stellar model atmospheres. The power-2 limb-darkening law allows a very good represen
Externí odkaz:
http://arxiv.org/abs/2305.01704
Autor:
Díaz, Luisa Fernanda Rodríguez, Bigot, Lionel, Børsen-Koch, Víctor Aguirre, Lund, Mikkel N., Rørsted, Jakob Lysgaard, Kallinger, Thomas, Sulis, Sophia, Mary, David
High-precision photometric data from space missions have improved our understanding of stellar granulation. These observations have shown with precision the stochastic brightness fluctuations of stars across the HR diagram, allowing us to better unde
Externí odkaz:
http://arxiv.org/abs/2205.11447
Population III stars were the first stars to form after the Big Bang, and are believed to have made the earliest contribution to the metal content of the universe beyond the products of the Big Bang Nucleosynthesis. These stars are theorized to have
Externí odkaz:
http://arxiv.org/abs/2210.09185
Autor:
Gerasimov, Roman, Burgasser, Adam J., Homeier, Derek, Bedin, Luigi R., Rees, Jon M., Scalco, Michele, Anderson, Jay, Salaris, Maurizio
Brown dwarfs can serve as both clocks and chemical tracers of the evolutionary history of the Milky Way due to their continuous cooling and high sensitivity of spectra to composition. We focus on brown dwarfs in globular clusters that host some of th
Externí odkaz:
http://arxiv.org/abs/2111.10063
Akademický článek
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Autor:
Zhou, Yixiao, Nordlander, Thomas, Casagrande, Luca, Joyce, Meridith, Li, Yaguang, Amarsi, Anish M., Reggiani, Henrique, Asplund, Martin
We establish a quantitative relationship between photometric and spectroscopic detections of solar-like oscillations using ab initio, three-dimensional (3D), hydrodynamical numerical simulations of stellar atmospheres. We present a theoretical deriva
Externí odkaz:
http://arxiv.org/abs/2102.02135
We present an analysis of the potential follow-up polarimetry microlensing observation to study the stellar atmospheres of the distant stars. First, we produce synthetic microlensing events using the Galactic model, stellar population, and interstell
Externí odkaz:
http://arxiv.org/abs/2011.03642