High-resolution telescope and spectrograph observations of the quiet solar chromosphere and transition zone

Details High-resolution telescope and spectrograph observations of the quiet solar chromosphere and transition zone High-resolution telescope and spectrograph observations of the quiet solar chromosphere and transition zone

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..870d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 15, 1984, p. 870-883.

Astronomy and Astrophysics

Astrophysics

130

Chromosphere, Solar Spectra, Spectroheliographs, Autocorrelation, Doppler Effect, High Resolution, Solar Atmosphere, Spectral Line Width, Ultraviolet Spectra

Scientific paper

A systematic program to observe the two-dimensional structure of the solar atmosphere and its temporal variation was conducted in connection with the third rocket flight of the High Resolution Telescope and Spectrograph (HRTS). A description is presented of the manner in which line intensities, Doppler shifts (velocities), and line widths are obtained from HRTS spectra. These quantities are derived for a single stigmatic slit spectra of the quiet sun. It is pointed out that an accurate wavelength scale can be derived from narrow Si I lines in the spectra. The intensity of chromospheric lines such as C I lambda 1560 is found to be largely the result of the structures forming the chromospheric network. A number of conclusions are drawn about quiet transition zone Doppler shifts (flows).

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