Chromospheric variability mechanisms affecting pre-main sequence stars

  • Alexander Brown
Activity in Pre-Main Sequence Stars
Part of the Lecture Notes in Physics book series (LNP, volume 291)


Variability studies of pre-main sequence (PMS) stars, which combine simultaneous data from different spectral regions, provide a powerful tool for investigating both the inhomogeneous outer atmospheric structure of these stars and the mechanisms causing their observed variability. The mechanisms already identified include variations in active region surface coverage, changes in circumstellar extinction, heating due to infalling material, stellar wind variability and flaring.


Tauri Star Optical Brightness Stellar Flare Emission Line Profile Circumstellar Extinction 


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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Alexander Brown
    • 1
  1. 1.Joint Institute for Laboratory AstrophysicsUniversity of Colorado and National Bureau of StandardsBoulderUSA

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