Observations of helium and hydrogen emission in quiescent prominences

Details Observations of helium and hydrogen emission in quiescent prominences Observations of helium and hydrogen emission in quiescent prominences

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...45..339i&link_type=abstract

Solar Physics, vol. 45, Dec. 1975, p. 339-349.

Physics

17

Emission Spectra, H Lines, Helium, Solar Prominences, Solar Spectra, Fine Structure, Solar Corona, Solar Flux Density, Spectroheliographs

Scientific paper

Observations of a number of helium triplet (10830, 4713, 4471, 3889, 4026 A) and hydrogen (H-gamma, delta, eta, and theta) emission-line intensities in six quiescent prominences are presented. The regions of prominence and neighboring corona were raster-scanned by the telescope, and all lines were measured concurrently at each point. The results are compared with previous observations and theory. In particular, the intensity of the 10830-A emission relative to the other triplets is found to differ strongly from the predictions of the recent detailed calculations of Heasley et al. (1974) for model quiescent prominences.

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