Other
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992icar...95..211p&link_type=abstract
Icarus, Vol. 95, No. 2, p. 211 - 221
Other
Scientific paper
Comet Wilson (1986l) was observed with the MPAE/Hoher List focal reducer-based CCD camera and grism spectrometer having spectral resolution of 4.9 Å per pixel, coupled to the ESO 1-m reflector. The data base consists of six long slit spectra, one of them is taken on the nucleus and the others at 1.5×105km in the tail, and images with filters centered at 6600 and 4250 Å. A "ray" structured tail longer than 400,000 km is detected in the emissions of CO+. The continuum profile extracted from the spectrum centered on the nucleus shows a distinct sunward asymmetry. From the imaging data it is seen that most of the dust ejection occurs in a "beam" on the sunward side, producing a "fan" like structure. The fan is about 70° wide and originates at about 12° east of the subsolar point. The dust column density derived from the spectrum centered on the nucleus is found to be asymmetric in the sun-antisun direction.
Geyer Edward H.
Jockers Klaus
Prasad Debi C.
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