Dust Activity of Comet Hale-Bopp (C/1995 O1) at Rh ~ 3 AU

Details Dust Activity of Comet Hale-Bopp (C/1995 O1) at Rh ~ 3 AU Dust Activity of Comet Hale-Bopp (C/1995 O1) at Rh ~ 3 AU

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997dps....29.3413t&link_type=abstract

American Astronomical Society, DPS meeting #29, #34.13; Bulletin of the American Astronomical Society, Vol. 29, p.1042

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations of comet Hale-Bopp (C/1995 O1) have been performed in the infrared (J, H, K bands) at the Nordic Optical Telescope (NOT), located on Canary islands, with the ARNICA (ARcetri Near Infrared CAmera). The comet was observed during two periods, at the beginning and the end of September 1996, when the comet was at heliocentric distances rh of ~ 3.3 and 2.9 AU, respectively. The data show a relatively large activity of the comet with production of some outbursts, the largest of which happened some time before the start of the second run (24.8 Sept.) and which may be the further evolution of the outburst detected by the HST (Weaver et al., 1997, Science 275, 1900). Here we present the analysis of the data with particular attention to the evolution of the outbursts and the photometric IR color index of the dust released.

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