On the mass motions and the atmospheric states of moustaches

Details On the mass motions and the atmospheric states of moustaches On the mass motions and the atmospheric states of moustaches

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...87..135k&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 87, Aug. 1983, p. 135-154.

Physics

39

Emission Spectra, Solar Atmosphere, Solar Spectra, Balmer Series, Doppler Effect, H Alpha Line, H Lines, K Lines, Opacity, Solar Limb, Spectral Line Width, Stellar Mass

Scientific paper

Analyses of broad moustache profiles of Balmer lines and Ca II H and K lines are performed based upon spectroscopic observation under good seeing conditions. H-alpha emission profiles are found to consist of three components, i.e., a central absorption, a Gaussian core and a power-law wing. Each of them has a different Doppler shift from others. From the data of Doppler shifts, mass motions with velocity of about 6 km/s are found to be present in chromospheric levels of moustache atmospheres. Computations of H-alpha emission profiles radiated from a variety of model atmospheres are made. Comparison of computed profiles with the observed ones leads to the conclusion that a broad H-alpha profile is due to a formation of heated (Delta T = 1500 K) and condensed (rho/rho0 = 5) chromospheric layers relative to the normal.

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