Reference : Isotopic abundance of nitrogen and carbon in distant comets
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/33286
Isotopic abundance of nitrogen and carbon in distant comets
English
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 >]
Hutsemekers, Damien mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Cochran, A. [Department of Astronomy and McDonald Observatory, University of Texas at Austin, C-1400 Austin, USA]
Zucconi, J.-M. [Observatoire de Besançon, 25010 Besançon Cedex, France]
Arpigny, Claude mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Schulz, R. [ESA/RSSD, ESTEC, PO Box 299, 2200 AG Noordwijk, The Netherlands]
Stüwe, J. A. [Leiden Observatory, 2300 RA Leiden, The Netherlands]
1-Mar-2005
Astronomy and Astrophysics
EDP Sciences
432
Letters
5-8
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] comets: abundances ; comets: individual: C/1995 O1 (Hale-Bopp) ; C/2001 Q4 (NEAT) ; C/2003 K4 (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 have been determined in comets C/1995 O1 (Hale-Bopp), C/2001 Q4 (NEAT) and C/2003 K4 (LINEAR) at heliocentric distances of, respectively, 2.7, 3.7 and 2.6 AU. These ratios have also been measured at rË 1 AU. No significant differences were found between all determinations, nor with the value obtained for other comets. If confirmed, the discrepancy between the nitrogen isotopic ratios from optical and millimeter measurements on CN and HCN would rule out HCN as a major parent of the cometary CN radicals. Based on observations collected at the European Southern Observatory, Paranal, Chile (ESO Programmes 270.C-5043, 073.C-0525 and 274.C-5015).
Researchers
http://hdl.handle.net/2268/33286
10.1051/0004-6361:200500009
http://adsabs.harvard.edu/abs/2005A%26A...432L...5M
http://de.arxiv.org/abs/astro-ph/0501553

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