Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002acasn..43...54y&link_type=abstract
Acta Astronomica Sinica, vol.43, no.1, p. 54-59
Astronomy and Astrophysics
Astronomy
1
Comet Hale-Bopp, Shells, Jet
Scientific paper
A film showing the shells of Comet Hale-Bopp, taken on March 4, 1997, is digitized and measured by means of PDS. The method of fitting leads to the following results: (1) the first shell (innermost one), derived from a jet formation, is seen as an Archimedes spiral and the velocity of the ejecta from the cometary nucleus is 1.6 km/sec; (2) all of the 2nd, 3rd and 4th shell are parabolas or catenaries.
Sun Chang-An
Wu Qin-Di
Yang Yan-Bin
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