Spatially resolved spectrophotometry of Comet P/Stephan-Oterma

Details Spatially resolved spectrophotometry of Comet P/Stephan-Oterma Spatially resolved spectrophotometry of Comet P/Stephan-Oterma

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...62...72c&link_type=abstract

Icarus (ISSN 0019-1035), vol. 62, April 1985, p. 72-81.

Physics

10

Cometary Atmospheres, Spatial Resolution, Spectrophotometry, Brightness, Comet Heads, Comet Nuclei, Comet Tails, Data Reduction, Spectrographs, Comets, Stephan-Oterma, Spectrophotometry, Telescope Methods, Spectra, Procedure, Distribution, Gases, Comae, Density, Emissions, Distance, Calculations, Symmetry, Mapping, Observations

Scientific paper

Observations of Comet P/Stephan-Oterma were made with an Intensified Dissector Scanner spectrograph on the McDonald Observatory 2.7-m telescope during the period from July 1980 to February 1981. These spectra cover a range of heliocentric distances from 2.3 AU preperihelion to 1.8 AU postperihelion. A small aperture was used to map the spatial distributions of the gases in the coma. Column densities of the observed cometary emissions (CN, C3, CH, and C2) were calculated, and it is shown that Stephan-Oterma appeared nearly spherically symmetric. These date are used by Cochran (1985) to constrain chemical models of Stephan-Oterma.

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