Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...195..331h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 195, no. 1-2, April 1988, p. 331-337.
Astronomy and Astrophysics
Astrophysics
25
Cyanogen, Halley'S Comet, Periodic Variations, Rotation, Astronomical Photography, Chemical Composition, Comet Tails, Image Processing, Light Curve, Comets, Halley, Periodicity, Morphology, Cn Radical, Cyanogen, Jets, Jetting, Geometry, Period, Rotation, Cdd Methods, Imagery, Analysis, Earth-Based Observations, Lightcurves, Comet Nuclei
Scientific paper
The authors have analyzed a set of CCD images of comet Halley which were taken in the light of the CN radical to search for evidence of a 2.25-day and/or a 7.37-day periodicity in the evolution of the CN jets. The results of this analysis support the earlier conclusion of Samarasinha et al. (1986): it is found that for a phase sorted set of CCD images, the geometry of the CN jets is more easily understood when a 7.37-day periodicity is assumed. A correlation between the CN jets and the photometric lightcurve of Millis and Schleicher (1986) is also found. In addition, the extent of the CN jets suggests a dominant periodicity greater than 2.25 days.
A'Hearn F. A. M.
Hoban Susan
Klinglesmith Daniel A.
Samarasinha Nalin H.
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