Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-29T18:35:05.041Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations of Gas and Dust in Comets with the Infrared Space Observatory

Published online by Cambridge University Press:  25 May 2016

J. Crovisier
J. Crovisier*
Affiliation:
Observatoire de Paris-Meudon, F-92195 Meudon, France

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The Infrared Space Observatory (ISO) offered us the opportunity to observe celestial bodies from 2.4 to 196 μm, which is of particular interest for comets. We present here spectroscopic observations with ISO of comets C/1995 O1 (Hale-Bopp) and 103P/Hartley 2. Fluorescence emissions of H2O, CO2 and (for comet Hale-Bopp only) CO and CH4 are observed, yielding the production rates of these species. High-resolution spectra of water permit the study of the rotational and spin temperatures of this molecule. In comet Hale-Bopp, the thermal infrared region of the spectra shows specifically, in addition to continuum-like emission, the signatures of crystalline, Mg-rich olivine (forsterite), and signs of crystalline pyroxenes, amorphous silicates and water ice. The presence of crystalline silicates is also suggested in the Jupiter-family comet P/Hartley 2.

Type
Part 8. Comets
Information
Symposium - International Astronomical Union , Volume 197: Astrochemistry: From Molecular Clouds to Planetary Systems , 2000 , pp. 461 - 470
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

Bergin, E.A., Neufeld, D.A., Stauffer, J.R., et al. 1999, IAU Circ. No 7183 Google Scholar
Bockelée-Morvan, D., Lis, D.C., Wink, D.E., et al. 2000, A&A, 353, 1101 Google Scholar
Brucato, J.R., Colangeli, L., Mennella, V., Palumbo, P., & Bussoletti, E. 1999, Planet. Space Scie., 47, 773 Google Scholar
Colangeli, L., Brucato, J.R., Ferrini, L., et al. 1999a, Adv. Space Res., 23, 1243 Google Scholar
Colangeli, L., Epifani, E., Brucato, J.R., et al. 1999b, A&A, 343, L87 Google Scholar
Crovisier, J. 1999, Earth Moon Planets, 79, 125 Google Scholar
Crovisier, J., Brooke, T.Y., Hanner, M.S., et al. 1996, A&A, 315, L385 Google Scholar
Crovisier, J., Brooke, T.Y., Leech, K., et al. 2000, in Thermal Emission Spectroscopy and Analysis of Dust, Disks, and Regoliths, eds. Sitko, M.L., Sprague, A.L., & Lynch, D.K., ASP Conf. Series, 196, in press Google Scholar
Crovisier, J., Encrenaz, T., Lellouch, E., et al. 1999b, ESA SP-427, 161 Google Scholar
Crovisier, J., Leech, K., Bockelée-Morvan, D., et al. 1997a, Science, 275, 1904 Google Scholar
Crovisier, J., Leech, K., Bockelée-Morvan, D., et al. 1997b, ESA SP-419, 137 Google Scholar
Crovisier, J., Leech, K., Bockelée-Morvan, D., et al. 1999a, ESA SP-427, 137 Google Scholar
Kessler, M.F., Steinz, J.A., Anderegg, M.E., et al. 1996, A&A, 315, L27 Google Scholar
Lellouch, E., Crovisier, J., Lim, T., et al. 1998, A&A, 339, L9 Google Scholar
Mumma, M.J., Weissman, P.R., & Stern, S.A. 1993, in Protostars and Planets III, eds. Levy, E.H. & Lunine, J.I., Univ. Arizona Press, 1177 Google Scholar
Wooden, D.H., Harker, D.E., Woodward, C.E., et al. 1999, ApJ, 517, 1034 Google Scholar