Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.2591n&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 90, Dec. 1985, p. 2591-2608. Research supported by the University of California.
Astronomy and Astrophysics
Astronomy
77
Astronomical Spectroscopy, Comet Nuclei, Cometary Atmospheres, Comets, Cosmic Dust, Spectrophotometry, Albedo, Perihelions, Signal To Noise Ratios, Comets, Spectrophotometry, Dust, Production Rates, Color, Distance, Gunn, Theoretical Studies, Mass, Encke, Observations, Data Reduction, Catalog, Calculations, Data, Parameters, Size, Distribution, Tuttle, Kohoutek, Stephen-Oterma, Bradfield, Grigg-Skjellerup, Swift-Gehrels, Kearns-Kwee, Geherals 2, Meier, Panther, Borrelly, Wild 3, Forbes, Brooks
Scientific paper
One hundred twenty IDS scans of the continua in 17 comets are analyzed to determine dust production rates and color as a function of heliocentric distance. Improved theory indicates that the dust loading of gas typically varies between 0.05 and 0.3 by mass (assuming a geometric albedo of 0.05 and oxygen expansion at 1 km s-1) except during outbursts, when it rises much higher. P/Encke near perihelion falls much lower yet, to 0.004 or less. Dust loading is not always constant as a function of time in a given comet. Dust color is typically reddish, as has often been noted before.
Newburn Ray L.
Spinrad Hyron
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