Prominence hydrogen lines at 10-20 microns

Details Prominence hydrogen lines at 10-20 microns Prominence hydrogen lines at 10-20 microns

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph..102...33z&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 102, no. 1-2, Dec. 1985, p. 33-40.

Astronomy and Astrophysics

Astronomy

11

H Lines, Infrared Spectra, Line Spectra, Solar Prominences, Solar Spectra, Helium, Infrared Astronomy, Spectral Line Width

Scientific paper

An analysis is presented of the prominent hydrogen lines in the spectral band 10-20 microns which were observed by Brault and Noyes (1983) with a Fourier transform spectrometer. A large quiescent limb prominence was observed at a position angle of 209 deg and a spectral resolution of Delta nu = 0.0306/cm was obtained. An analysis is presented of line shifts, line widths and line ratios, and an upper limit for (Ne)(N sub p) is established. The widths of the H and He lines imply that T = 10,000 K and that vT = 8 km/s; the upper limit on (Ne)(N sub p) is of the order of 10 to the 20th. A mixture of symmetric and asymmetric profiles was observed.

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