Open AccessOn chromospheric variations modeling for main-sequence stars of G and K spectral classes
Author(s) -
Е. А. Бруевич
Publication year - 2011
Publication title -
natural science
Language(s) - English
Resource type - Journals
eISSN - 2150-4105
pISSN - 2150-4091
DOI - 10.4236/ns.2011.38087
Subject(s) - stars , physics , flux (metallurgy) , astrophysics , observatory , main sequence , stellar classification , spectral line , astronomy , materials science , metallurgy
We present a method of 13 late-type main-sequence stars chromospheric flux observation data calculations. These Sun-like stars have well-determined cyclic flux variations similar to the 11-year solar activity cycle. Our flux prediction is based on chromospheric HK emission time series measurements from the Mount Wilson Observatory and comparable solar data. We show that solar three - component modeling explains well the stellar observations. We find that the 10 - 20% of K - stars disc’s surfaces are occupied by bright active regions