Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.240..647m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 240, Oct. 1, 1989, p. 647-655. Research supported by SE
Astronomy and Astrophysics
Astronomy
4
Astronomical Models, Carbon, Comets, Calibrating, Cosmic Dust, Cyanogen
Scientific paper
Comet Bradfield 1987s and Comet P/Borrelly 1987p were observed between December 14 and December 22, 1987. The large-scale and near-nucleus CN profiles for both comets were fit to a simple radial outflow model with decay. At 1 AU, parent scalelengths of (2.3 + or - 0.2) x 10 to the 4th for CN and (2.1 + or - 0.2) x 10 to the 4th km for C2 were found. It is suggested that these short parent scalelengths could correspond to the scale for release from CHON grains. Although a proportion of the C2 in P/Borrelly is expected to be a produced by the CHON grains, the results suggest a second source which is noncentral.
Meredith Nigel P.
Rees David
Wallis Max K.
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