Results 1 to 10 of about 1,093 (146)
Measuring the magnetic fields in the chromospheres of low-mass stars [PDF]
Nature CommunicationsMagnetic fields in the upper atmospheres of solar-like stars are believed to provide an enormous amount of energy to power the hot coronae and drive large-scale eruptions that could impact the habitability of planetary systems around these stars. However,
Tianqi Cang +13 more
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Stellar coronal mass ejections [PDF]
Serbian Astronomical Journal, 2022 Stellar coronal mass ejections (CMEs) are a growing research field, especially during the past decade. The large number of so far detected exoplanets raises the open question for the CME activity of stars, as CMEs may strongly affect ...
Leitzinger M., Odert P.
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Quantifying the Key Factors Affecting the Escape of Planetary Atmospheres
The Astrophysical Journal, 2023 The habitability of Earth-like planets is an increasingly important subject in astrophysics and in planetary sciences. Atmospheric escape plays a vital role in the evolution of the habitability of Earth-like planets.
J. Luo, H.-Q. He, G.-S. Tong, Jiao Li
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The Astrophysical Journal Letters, 2023 TRAPPIST-1 is a nearby system of seven Earth-sized, temperate, rocky exoplanets transiting a Jupiter-sized M8.5V star, ideally suited for in-depth atmospheric studies.
Olivia Lim +24 more
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Nonthermal Motions and Atmospheric Heating of Cool Stars
The Astrophysical Journal, 2023 The magnetic processes associated with the nonthermal broadening of optically thin emission lines appear to carry enough energy to heat the corona and accelerate the solar wind.
S. Boro Saikia +8 more
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Non-Thermal Nitric Oxide Formation in the Earth’s Polar Atmosphere
Atmosphere, 2023 Auroral events are the prominent manifestation of solar/stellar forcing on planetary atmospheres because they are closely related to the stellar energy deposition by and evolution of planetary atmospheres.
Valery Shematovich +2 more
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Intriguing Revelations from Lithium, Beryllium, and Boron
The Astrophysical Journal, 2023 This is a report on some highlights of research on the rare light elements, lithium (Li), beryllium (Be), and boron (B), that were presented at my Henry Norris Russell Lecture in 2020 January.
Ann Merchant Boesgaard
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Investigation of ρ Cas (HR 9045, HD 224014) stellar atmosphere [PDF]
Serbian Astronomical JournalThe atmosphere of hypergiant ρ Cas is investigated by the method of atmospheric model. Effective temperature and the surface of gravity are determined by comparing the observed and theoretical values of photometrical indices [c1];Q, and ...
Samedov Z.A., Hajieva G.M.
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Pulsating Stellar Atmospheres [PDF]
Symposium - International Astronomical Union, 1997 We review the basic concepts, present state of theoretical models, and the future prospects for theory and observations of pulsating stellar atmospheres. Our emphasis is on radially pulsating cool stars, which dynamic atmospheres provide a general example for the differences with standard static model atmospheres.
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Lithium in Turnoff Stars in the Globular Cluster M5: A Quest for Primordial Lithium
The Astrophysical Journal, 2023 The light element lithium is formed by nucleosynthesis during the Big Bang. Its abundance can help to define the parameters of the early Universe. To find this primordial value, it is necessary to determine Li abundances in the oldest stars because it is
Ann Merchant Boesgaard +1 more
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