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Stellar Chromospheric Activity [PDF]
Living Reviews in Solar Physics, 2008 The Sun, stars similar to it, and many rather dissimilar to it, have chromospheres, regions classically viewed as lying above the brilliant photosphere and characterized by a positive temperature gradient and a marked departure from radiative equilibrium.
Hall Jeffrey C.
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The evolution of the solar–stellar activity [PDF]
Journal of Atmospheric and Solar-Terrestrial Physics, 2020 We present a brief review of observational results contributing to modern ideas on the evolution of stellar activity. Basic laws, derived for both rotation-age and activity-rotation relationships, allow us to trace how the activity of low-mass stars changes with age during their stay on the main sequence.
Cv Radhakrishnan
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THE STELLAR-ACTIVITY-ROTATION RELATIONSHIP AND THE EVOLUTION OF STELLAR DYNAMOS [PDF]
Astrophysical Journal, 2011 We present a sample of 824 solar and late-type stars with X-ray luminosities and rotation periods. This is used to study the relationship between rotation and stellar activity and derive a new estimate of the convective turnover time. From an unbiased subset of this sample the power law slope of the unsaturated regime, L_X / L_bol = Ro^β, is fit as β= -
Nicholas Wright +2 more
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Seismic Signatures of Stellar Magnetic Activity—What Can We Expect From TESS?
Frontiers in Astronomy and Space Sciences, 2019 Asteroseismic methods offer a means to investigate stellar activity and activity cycles as well as to identify those properties of stars which are crucial for the operation of stellar dynamos.
René Kiefer +3 more
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The California-Kepler Survey. XI. A Survey of Chromospheric Activity through the Lens of Precise Stellar Properties [PDF]
The Astrophysical JournalSurveys of exoplanet host stars are valuable tools for assessing population level trends in exoplanets, and their outputs can include stellar ages, activity, and rotation periods.
Howard Isaacson +6 more
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35 pages, 10 figures, 1 table, to be published as a chapter in 'Space Environments and their Impact on Exoplanets', editor O ...
Bellotti, S., Morin, J.
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Stellar activity and coronal heating: an overview of recent results [PDF]
Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2015 Steven Saar, Paola Testa
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Stellar magnetic activity and exoplanets [PDF]
EPJ Web of Conferences, 2017 It has been proposed that magnetic activity could be enhanced due to interactions between close-in massive planets and their host stars. In this article, I present a brief overview of the connection between stellar magnetic activity and exoplanets ...
Vidotto A.A.
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No Transits of Proxima Centauri Planets in High-Cadence TESS Data
Frontiers in Astronomy and Space Sciences, 2021 Proxima Centauri is our nearest stellar neighbor and one of the most well-studied stars in the sky. In 2016, a planetary companion was detected through radial velocity measurements.
Emily A. Gilbert +9 more
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Physical Properties of Radio Stars Based on LAMOST Spectral Survey
Universe, 2022 Radio emission has been detected for all types of stars in the Hertzsprung Russell diagram. Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) low and medium-resolution spectroscopic surveys provide a good opportunity to obtain the ...
Liyun Zhang +6 more
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