High resolution Lyman alpha observations of comet Kohoutek /1973f/ near perihelion

Details High resolution Lyman alpha observations of comet Kohoutek /1973f/ near perihelion High resolution Lyman alpha observations of comet Kohoutek /1973f/ near perihelion

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....38..413k&link_type=abstract

Astronomy and Astrophysics, vol. 38, no. 3, Feb. 1975, p. 413-416. NASA-supported research.

Astronomy and Astrophysics

Astronomy

6

Comet Nuclei, Kohoutek Comet, Lyman Alpha Radiation, Spaceborne Astronomy, Spectral Line Width, Hydrogen, Optical Thickness, Skylab Program

Scientific paper

The hydrogen Lyman-alpha emission line of comet Kohoutek (1973f) was observed and resolved by the high-dispersion Skylab/ATM S082B spectrograph shortly after the comet's perihelion passage (29-31 December 1973). The Lyman-alpha line width was determined from three different exposures of the comet nuclear region. A simplified analysis of the optical thickness effects showed that this line width is consistent with the established hydrogen outflow velocity of 8 to 10 km/sec.

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