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A fluorescence model of the C3 radical in comets

Rousselot, P. and Arpigny, C. and Rauer, H. and Cochran, A.L. and Gredel, R. and Cochran, W.D. and Manfroid, J. and Fitzsimmons, A. (2001) A fluorescence model of the C3 radical in comets. Astronomy and Astrophysics, 368, pp. 689-699.

Full text not available from this repository.

Abstract

Theoretical resonance fluorescence calculations are presented of the triatomic C3 radical and are compared with observations of the C3 emission in comets Hale-Bopp and de Vico. A theoretical model of the C3 vibration-rotational structure in the A1Piu - X1Sigmag + electronic system is introduced. The model takes into account the detailed structure of the bending mode nu2 which is responsible for the emission of the 4050 Å group. A total of 1959 levels are considered, with 515 levels in the ground state. The main effort is to model high-resolution spectra of the 4050 Å emission in comets C/1995 O1 Hale-Bopp and 122P/1995 S1 de Vico. The agreement between observed and theoretical spectra is good for a value of the dipole moment derivative of dmu/dr ~ 2.5 Debye Å-1. The modeled C3 emission exhibits a pronounced Swings effect. Based on observations made with William Herschel Telescope operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias, and on observations made at the McDonald Observatory, which is operated by the University of Texas at Austin, USA.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:A fluorescence model of the C3 radical in comets
Authors:
AuthorsInstitution or Email of Authors
Rousselot, P.Observatoire de Besançon,Besançon, France
Arpigny, C.Université de Liège, Institut d'Astrophysique, Liège, Belgium
Rauer, H.UNSPECIFIED
Cochran, A.L.Univ. of Texas, Astronomy Dept., Austin, TX, USA
Gredel, R.Max-Planck Institut für Astronomie, Heidelberg, Germany
Cochran, W.D.Univ. of Texas, Astronomy Dept., Austin, TX, USA
Manfroid, J.Université de Liège, Institut d'Astrophysique, Liège, Belgium
Fitzsimmons, A.Queen's University, Physics Dept., Belfast, UK
Date:2001
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:368
Page Range:pp. 689-699
Status:Published
Keywords:MOLECULAR DATA, COMETS: GENERAL, COMETS: INDIVIDUAL: C/1995 O1 HALE-BOPP, COMETS: INDIVIDUAL: 122 P/1995 S1 DE VICO
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institut für Weltraumsensorik und Planetenerkundung
Deposited By: Susanne Pieth
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 19:26

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