Stellar Chromospheric Variability

Stellar Chromospheric Variability - MDPI

Cool stars with convective envelopes of spectral types F and later tend to exhibit magnetic activity throughout their atmospheres.

Stellar Chromospheric Variability - NASA/ADS

Cool stars with convective envelopes of spectral types F and later tend to exhibit magnetic activity throughout their atmospheres.

Stellar Chromospheric Variability | Encyclopedia MDPI

Chromospheric (magnetic) activity is evidence of the presence of strong and variable magnetic fields. Magnetically active chromospheres are ...

Stellar Chromospheric Activity | Living Reviews in Solar Physics

Understanding chromospheric activity and variability is therefore essential to a complete understanding of the physics and evolution of a star and, by virtue of ...

Stellar chromospheres - NASA/ADS

... chromospheric variability, the energy balance in stellar chromospheres, and the physics of chromospheric activity are described.

Gaia Data Release 3 - Stellar chromospheric activity and mass ...

A stellar chromosphere is the manifestation of non-radiative heating due to (magneto)acoustic wave dissipation and magnetic-field recombination in late-type ...

Variation in the Stellar Initial Mass Function from the Chromospheric ...

Variation in the Stellar Initial Mass Function from the Chromospheric Activity of M Dwarfs in Early-type Galaxies, Pieter van Dokkum, ...

Stellar chromospheric variability - Macquarie University

We review the drivers of stellar chromospheric activity and the resulting physical parameters implied by the observational diagnostics.

A brief survey of chromospheric and photometric variability among ...

While it has been known for decades that other sunlike stars can harbor activity cycles reminiscent of the 11-yr solar cycle, it is only recently that precision ...

STELLAR CHROMOSPHERES - NASA Technical Reports Server

Variation of Chromospheric Properties with. Stellar Mass and Age. 263. "Chromospheric Activity and Stellar Evolution,". Rudolf Rippenhahn. 265. Discussion ...

Stellar chromospheric activity of 1674 FGK stars from the ... - arXiv

Title:Stellar chromospheric activity of 1,674 FGK stars from the AMBRE-HARPS sample I. A catalogue of homogeneous chromospheric activity.

Chromospheric activity of nearby Sun-like stars - R′HK index ...

A major contributor to stellar activity is the evolution and variability of magnetic fields via heating by Alfvén waves or transport of mechanical energy ...

Chromospheric variability mechanisms affecting pre-main sequence ...

The mechanisms already identified include variations in active region surface coverage, changes in circumstellar extinction, heating due to infalling material, ...

Magnetic field and chromospheric activity evolution of HD 75332

The S-index is the most commonly used index for stellar chromospheric activity, and decades-worth of historical data are available for the analysis of long-term ...

Long-term variability and possible stellar cycles in hybrid ...

Results from an investigation of the variability seen in the Mg II emission line fluxes and wind absorption components of a number of hybrid-chromosphere ...

Stellar Chromospheric Variability - OUCI

We review the drivers of stellar chromospheric activity and the resulting physical parameters implied by the observational diagnostics. At a basic level, we ...

(PDF) Wavelet Analysis of Stellar Chromospheric Activity Variations

Observations of chromospheric activity variations for some lower main-sequence stars from the Mount Wilson Observatory's HK project reveal a ...

Stellar Chromospheric Activity Database of Solar-like Stars Based ...

Statistics reveal that the solar-like stars with a high level of chromospheric activity (Srec > 0.6) tend to appear in the parameter range of Teff (effective ...

Characterization of chromospheric activity based on Sun‐as‐a‐star ...

The strong chromospheric absorption lines Ca ii H & K are tightly connected to stellar surface magnetic fields. Only for the Sun, spectral ...

Linking chromospheric activity and magnetic field properties for late ...

Chromospheric Ca ii H&K spectral line emissions provide an important, indirect diagnostic of stellar magnetic activity. Magnetic heating in the chromosphere ...