H-alpha and H-beta emission in quiescent prominences

Details H-alpha and H-beta emission in quiescent prominences H-alpha and H-beta emission in quiescent prominences

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230..581l&link_type=abstract

Astrophysical Journal, Part 1, vol. 230, June 1, 1979, p. 581-589.

Astronomy and Astrophysics

Astrophysics

22

H Alpha Line, H Beta Line, Solar Prominences, Solar Spectra, Astronomical Spectroscopy, Emission Spectra, High Resolution

Scientific paper

High-resolution H-alpha and H-beta line profiles in a number of quiescent prominences were measured at positions of weak to moderate brightness (for H-alpha integrated intensity of not less than 1.35 x 10 to the 5th ergs/sq cm/s/sr). Those profiles that appear to originate primarily in a single physical element can be accurately fitted with a two-component model, each component being characterized by a temperature, a Gaussian microturbulence distribution, and a constant source function. The various values of integrated intensity, optical thickness, and Doppler width are compared with previous measurements and recent theoretical calculations; several discrepancies are noted and discussed.

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