Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1310m&link_type=abstract
Astronomical Journal, vol. 87, Sept. 1982, p. 1310-1317.
Astronomy and Astrophysics
Astronomy
62
Astronomical Photometry, Bandpass Filters, Comets, Cosmic Dust, Scattering Coefficients, Spectral Line Width, Backscattering, Carbon, Cyanogen, Emission Spectra, Granular Materials, Hydroxyl Radicals, Radiant Flux Density
Scientific paper
The results of narrowband filter photometry of Comet P/Stephan-Oterma are presented. For heliocentric distances between 1.95 and 1.58 AU prior to perihelion, OH, CN, and C2 production rates varied approximately as r to the -5th power. Following perihelion, an even steeper dependence of production rate on heliocentric distance was observed for these species. A pronounced brightening of the comet's continuum near opposition is interpreted in terms of preferential backscattering by the cometary dust. While Comet P/Stephan-Oterma is one of the dustier comets observed, it shows no indication of compositional anomalies in either the gas or the dust.
Ahearn Michael F.
Millis Robert L.
Thompson Don T.
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