A lambda 10830 VS X-ray correlation among late-type stars

Details A lambda 10830 VS X-ray correlation among late-type stars A lambda 10830 VS X-ray correlation among late-type stars

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88.1031s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, July 1983, p. 1031-1033.

Astronomy and Astrophysics

Astronomy

13

Dwarf Stars, Giant Stars, Infrared Absorption, Stellar Atmospheres, Stellar Spectra, X Ray Sources, Atomic Excitations, Chromosphere, Extreme Ultraviolet Radiation, F Stars, G Stars, Helium, K Stars, Late Stars, Particle Collisions, Solar Spectra, Stellar Coronas, Stellar Luminosity

Scientific paper

Plots of fractional X-ray luminosity versus He I λ10830 absorption show different behaviors among F - K dwarfs and G - K giants. There is no correlation between these chromospheric parameters for dwarfs, but a rather good one exists for giants. It is inferred that coronal EUV photons are dominant in the formation of λ10830 absorption lines in giant atmopheres and are roughly comparable with electronic collisions in forming λ10830 in dwarfs.

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