Results 11 to 20 of about 86,516 (190)
Understanding the Duration of Solar and Stellar Flares at Various Wavelengths [PDF]
Astrophysical Journal, 2023 Recent irradiance measurements from numerous heliophysics and astrophysics missions including Solar Dynamics Observatory (SDO), GOES, Kepler, TESS, Chandra, the X-ray Multi-Mirror Mission, and NICER have provided critical input into understanding the ...
J. Reep, V. Airapetian
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Application of a Magnetic-field-induced Transition in Fe x to Solar and Stellar Coronal Magnetic Field Measurements [PDF]
Research in Astronomy and Astrophysics, 2022 Magnetic fields play a key role in driving a broad range of dynamic phenomena in the atmospheres of the Sun and other stars. Routine and accurate measurements of the magnetic fields at all the atmospheric layers are of critical importance to understand ...
Yajie Chen +5 more
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Atomic diffusion in solar-like stars with MESA. Comparison with the Montreal/Montpellier and CESTAM stellar evolution codes [PDF]
Astronomy & Astrophysics, 2022 Context. The stellar evolution code Modules for Experiments in Stellar Astrophysics (MESA) is public and is widely used by the community. It includes the possibility of taking several non-standard processes such as atomic di ff usion into account. Even if
Bernardo Campilho, M. Deal, D. Bossini
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Stellar population astrophysics (SPA) with the TNG. The chemical content of the red supergiant population in the Perseus complex [PDF]
Astronomy & Astrophysics, 2021 Context. The Perseus complex in the outer disk of the Galaxy hosts a number of clusters and associations of young stars. Gaia is providing a detailed characterization of their kinematic structure and evolutionary properties. Aims.
C. Fanelli +5 more
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Connecting measurements of solar and stellar brightness variations [PDF]
Astronomy & Astrophysics, 2020 Context. A comparison of solar and stellar brightness variations is hampered by the difference in spectral passbands that are used in observations, and also by the possible difference in the inclination of the solar and stellar rotation axes from the ...
N.-E. Nèmec +11 more
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Stromlo Stellar Tracks: Non-solar-scaled Abundances for Massive Stars [PDF]
, 2021 We present the Stromlo Stellar Tracks, a set of stellar evolutionary tracks, computed by modifying the Modules for Experiments in Stellar Astrophysics (MESA) 1D stellar evolution package, to fit the Galactic Concordance abundances for hot (T > 8000 K ...
K. Grasha +3 more
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Astronomy & Astrophysics, 2023 Binary systems constitute a valuable astrophysics tool for testing our understanding of stellar structure and evolution. Systems containing at least one oscillating component are interesting in this regard because asteroseismology offers independent ...
P. G. Beck +25 more
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Space Science Reviews, 2022 The overarching theme of the Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS), an Astrophysics MIDEX-class mission concept, is Following water from galaxies, through protostellar systems, to Earth’s oceans.
C. Anderson +8 more
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Stellar Population Astrophysics (SPA) with TNG [PDF]
Astronomy & Astrophysics, 2020 Context. Open clusters are excellent tracers of the chemical evolution of the Galactic disc. The spatial distribution of their elemental abundances, through the analysis of high-quality and high-resolution spectra, provides insight into the chemical ...
G. Casali +11 more
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Stellar population astrophysics (SPA) with the TNG [PDF]
Astronomy & Astrophysics, 2019 Context. Open clusters exquisitely track the Galactic disc chemical properties and its time evolution; a substantial number of studies and large spectroscopic surveys focus mostly on the chemical content of relatively old clusters (age ≳ 1 Gyr ...
V. d'orazi +10 more
semanticscholar +3 more sources