SPECTRA OF COMET HALE–BOPP (C/1995 O1) OBTAINED WITH 6-M BTA REFLECTOR AT MOUNT PASTUKHOV


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Abstract

Between July 1996 and April 1997, 92 spectra of comet Hale–Bopp were obtained with the 6-meter BTA telescope of the SAO of the RAS at Mount Pastukhov. The spectra are two-dimensional, which allows one to determine the energy distribution for each emission along the slit and the energy distribution in wavelength for each individual position in the slit. From the 92 two-dimensional spectra covering the inner coma, detailed spectral maps of the total near-nuclear region of the comet are available for July 10, 11 and 12, 1996 and April 15, 1997. We propose an hypothesis about an unknown cometary species near λ = 620 nm in the spectrum obtained July 10, 1996. We also find an effect which may be caused by fluorescence of cometary dust.

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