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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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Stellar activity and coronal heating: an overview of recent results. [PDF]
Philos Trans A Math Phys Eng Sci, 2015 Observations of the coronae of the Sun and of solar-like stars provide complementary information to advance our understanding of stellar magnetic activity, and of the processes leading to the heating of their outer atmospheres.
Testa P, Saar SH, Drake JJ.
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The stellar activity‐rotation relationship [PDF]
Astronomische Nachrichten, 2013 AbstractUsing a new catalog of 824 solar and late‐type stars with measured X‐ray luminosities and rotation periods we have studied the relationship between rotation and stellar activity that is believed to be a probe of the underlying stellar dynamo. Using an unbiased subset of the sample we calculate the power law slope of the unsaturated regime of ...
Wright, Nicholas J. +3 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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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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Inferences on Stellar Activity and Stellar Cycles from Asteroseismology
Space Science Reviews, 2014 The solar activity cycle can be studied using many different types of observations, such as counting sunspots, measuring emission in the Ca II H&K lines, magnetograms, radio emissions, etc. One of the more recent ways of studying solar activity is to use the changing properties of solar oscillations.
William J. Chaplin, Sarbani Basu
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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 magnetic activity – Star-Planet Interactions
EPJ Web of Conferences, 2015 Stellar magnetic activity is an important factor in the formation and evolution of exoplanets. Magnetic phenomena like stellar flares, coronal mass ejections, and high-energy emission affect the exoplanetary atmosphere and its mass loss over time.
Poppenhaeger, K.
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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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