The infrared spectrum of comet C/1995 O1 (Hale-Bopp) at 4.6 AU from the Sun.

Details The infrared spectrum of comet C/1995 O1 (Hale-Bopp) at 4.6 AU from the Sun. The infrared spectrum of comet C/1995 O1 (Hale-Bopp) at 4.6 AU from the Sun.

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...315l.385c&link_type=abstract

Astronomy and Astrophysics, v.315, p.L385-L388

Astronomy and Astrophysics

Astrophysics

56

Comets: General, Comet: Individual: C/1995 O1 (Hale-Bopp), Infrared: Solar System

Scientific paper

Comet C/1995 O1 (Hale-Bopp) was observed on 27 April 1996 with the ISOPHOT instrument of ISO when it was at 4.6 AU from the Sun. The 2.5-12μm spectrum was recorded at low resolution. We present here the preliminary results of this observation. The 2.5-5μm spectrum shows emission in the CO_2_ ν_3_ band. The CO_2_ production rate is about 1.3x10^28^ s^-1^. The 6-12μm spectrum shows thermal emission at a colour temperature of 162K (6-8μm range) and a strong silicate band around 10μm, with a narrow feature at 11.2μm indicative of crystalline silicates.

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