Parameters of the coronal emission line 530.3 NM during the solar eclipse of July 31, 1981

Details Parameters of the coronal emission line 530.3 NM during the solar eclipse of July 31, 1981 Parameters of the coronal emission line 530.3 NM during the solar eclipse of July 31, 1981

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986baicz..37..253r&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 37, Sept. 1986, p. 253-260.

Astronomy and Astrophysics

Astronomy

5

Emission Spectra, Line Spectra, Radial Velocity, Solar Corona, Solar Eclipses, Coronagraphs, Doppler Effect, Normal Density Functions

Scientific paper

The solar eclipse of July 31, 1981 is characterized on the basis of 2990 spectra from 144 photographs obtained at 2.5-deg position-angle intervals in 7-s exposures using the coronograph and 580-pm/mm-dispersion spectrograph at Lomnicky Stit. The data are presented in extensive tables and graphs and briefly characterized. Parameters determined include coronal-emission-line wavelength 530.2765 nm; minimum, mean, and maximum radial velocities in the corona -6.6, 2.3, and 12.2 km/s; and mean Doppler half width of the line 47.4 + or 7.0 pm, corresponding to temperature (2.43 + or - 0.6) x 10 to the 6th K in a thermal-broadening scenario.

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