The Spatial Distribution of Dust Jets Seen during the VEGA-2 Flyby

Details The Spatial Distribution of Dust Jets Seen during the VEGA-2 Flyby The Spatial Distribution of Dust Jets Seen during the VEGA-2 Flyby

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..835s&link_type=abstract

Astronomy and Astrophysics, Vol.187, NO. 1+2/NOV, P. 835, 1987

Astronomy and Astrophysics

Astrophysics

12

Scientific paper

One important physical characteristic of comet P/Halley is dust jet activity, seen from Earth as changing coma patterns. At spacecraft resolution it becomes possible to precisly locate the sources of active jets on an irregularly shaped nucleus. The data set employed in this analysis consists of 11 full-format (512 x 512 px) Vega-2 images taken over a 15 min interval starting approximately 370s before closest approach. The distance to the nucleus was always less then 45,000 km and became as close as 8030 km. Most of the active zones formed at least one quasi-linear structure on the surface. We found evidence of the activity on the dark hemisphere, at least one of the faint but active jet sources is there.

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