Modeling Dust Jets And Shells From Comet Hale-Bopp |
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Authors: | Vasundhara R Chakraborty Pavan Hänel Andreas Heiser Erwin |
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Institution: | 1.Indian Institute of Astrophysics, 560034, Bangalore, India ;2.Museum am Sch?lerberg, Am Sch?lerberg 8, D-49082, Osnabrück ;3.Rossengasse 9, D-49082, Osnabrück ; |
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Abstract: | Persistent jet and shell structures from comet Hale-Bopp showing gradual changes in the shapes and orientations with aspect
angle and solar illumination geometry indicate long lived active sources. A model to simulate the dust features has been applied
to the series of observations from September 1996 to May 1997. Most of the structures can be explained as arising due to ejections
from persistent active regions at comet-o-centric latitudes near +65°, +55°, −5° to −15°, −35° and −65°. The best fitting
pole positions vary between 255° ±10° and 275° ± 10° in right ascension and −45° ± 10° to −75° ± 10° in declination. Lower
limits on the dust and gas production rates at various epochs are presented.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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