ORBi: Manfroid Jean - Isotopic abundance of nitrogen and carbon in distant comets

Reference : Isotopic abundance of nitrogen and carbon in distant comets


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/33286

Title :	Isotopic abundance of nitrogen and carbon in distant comets
Language :	English
Author, co-author :	Manfroid, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Jehin, Emmanuel [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
	Hutsemekers, Damien [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 [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]
Publication date :	1-Mar-2005
Journal title :	Astronomy and Astrophysics
Publisher :	EDP Sciences
Volume :	432
Issue/season :	Letters
Pages :	5-8
Audience :	International
ISSN :	0004-6361
e-ISSN :	1432-0746
City :	Les Ulis
Country :	France
Keywords :	[en] comets: abundances ; comets: individual: C/1995 O1 (Hale-Bopp) ; C/2001 Q4 (NEAT) ; C/2003 K4 (LINEAR)
Abstract :	[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).
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/33286
DOI :	10.1051/0004-6361:200500009
Other URL :	http://adsabs.harvard.edu/abs/2005A%26A...432L...5M
	http://de.arxiv.org/abs/astro-ph/0501553

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