Reference : Isotopic abundances of carbon and nitrogen in Jupiter-family and Oort Cloud comets
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/30819
Isotopic abundances of carbon and nitrogen in Jupiter-family and Oort Cloud comets
English
Hutsemekers, Damien mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Manfroid, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Jehin, Emmanuel mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Arpigny, Claude mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Cochran, A. [Department of Astronomy and McDonald Observatory, University of Texas at Austin, C-1400, Austin, USA]
Schulz, R. [ESA/RSSD, ESTEC, PO Box 299, 2200 AG Noordwijk, The Netherlands]
Stüwe, J. A. [Leiden Observatory, 2300 RA Leiden, The Netherlands]
Zucconi, J.-M. [Observatoire de Besançon, 25010 Besançon Cedex, France]
1-Sep-2005
Astronomy and Astrophysics
EDP Sciences
440
Letters
21-24
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] comets: abundances ; comets: individual: 88P/Howell ; comets: individual: C/1999 S4 (LINEAR)
[en] The [SUP]12[/SUP]C[SUP]14[/SUP]N/[SUP]12[/SUP]C[SUP]15[/SUP]N and [SUP]12[/SUP]C[SUP]14[/SUP]N/[SUP]13[/SUP]C[SUP]14[/SUP]N isotopic ratios are determined for the first time in a Jupiter-family comet, 88P/1981 Q1 Howell, and in the chemically peculiar Oort Cloud comet C/1999 S4 (LINEAR). By comparing these measurements to previous ones derived for six other Oort Cloud comets (including one of Halley-type), we find that both the carbon and nitrogen isotopic ratios are constant within the uncertainties. The mean values are [SUP]12[/SUP]C/[SUP]13[/SUP]C ~= 90 and [SUP]14[/SUP]N/[SUP]15[/SUP]N ~=145 for the eight comets. These results strengthen the view that CN radicals originate from refractory organics formed in the protosolar molecular cloud and subsequently incorporated in comets.
Researchers ; Students
http://hdl.handle.net/2268/30819
10.1051/0004-6361:200500160
http://adsabs.harvard.edu/abs/2005A%26A...440L..21H
http://de.arxiv.org/abs/astro-ph/0508033

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