Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.0903h&link_type=abstract
American Astronomical Society, DPS meeting #28, #09.03; Bulletin of the American Astronomical Society, Vol. 28, p.1088
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We present new results from images taken of Comet 1996B2 (Hyakutake) using the 3.5m WIYN telescope at the Kitt Peak Observatory from 25-31 March, 1996. We provide additional dynamical information about the rotational characteristics of the nucleus, including the major plane of rotation, an upper limit to the period, and a comparison of these characteristics over several hours on successive nights. In addition, a direct measurement of the jet outflow velocity near the nucleus is shown based on the movement of a detached sunward facing plume. We also present additional analysis of the structure and temporal evolution of the unique arc shaped emission feature observed to trail the nucleus in images isolating gas emissions of OH and CN. Continuum subtracted images are shown along with measurements of the tailward velocity and rate of spreading in the debris condensation that preliminary model calculations suggest may be the source of the arc.
Combi Michael R.
Harris Walter M.
Mueller Beatrice E. A.
Scherb Frank
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