ORBi: Crovisier J. - Observations of the rotational lines of OH in comets with the Herschel Space Observatory

Reference : Observations of the rotational lines of OH in comets with the Herschel Space Observatory


	Document type :	Scientific congresses and symposiums : Paper published in a journal
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/107050

Title :	Observations of the rotational lines of OH in comets with the Herschel Space Observatory
Language :	English
Author, co-author :	Crovisier, J. [LESIA, Observatoire de Paris, Meudon, France, (jacques.crovisier@obspm.fr)]
	Bockelée-Morvan, D. [LESIA, Observatoire de Paris, Meudon, France, (jacques.crovisier@obspm.fr)]
	Biver, N. [LESIA, Observatoire de Paris, Meudon, France, (jacques.crovisier@obspm.fr)]
	Hartogh, P. [Max-Planck-Institut für Sonnensystemforschung, Katlenburg-Lindau, Germany]
	Hutsemekers, Damien [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)]
	Jehin, Emmanuel [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
	Küppers, M. [Rosetta Science Operations Centre, ESA, Madrid, Spain]
	Lis, D. C. [California Institute of Technology, Pasadena, USA]
	Manfroid, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)]
	Rengel, M. [> >]
	Swinyard, B. [> >]
	Szutowicz, S. [> >]
	de Val-Borro, M. [> >]
	Vandenbussche, B. [> >]
Publication date :	2011
Journal title :	EPSC Abstracts 2011
Pages :	436, pp. 1-2
Audience :	International
Event name :	EPSC-DPS Joint Meeting 2011
Event date :	2-7 October 2011
Event place (city) :	Nantes
Event country :	France
Abstract :	[en] We present here a search for the OH rotational lines in these spectral scans. In comet 103P/Hartley 2, the 2 3/2(5/2)-2 3/2(3/2) lines at 119 μm and 2 1/2(5/2)-2 1/2(3/2) lines at 99 μm are detected. Other lines may be marginally present. Two mechanisms concur to the emission of the OH rotational lines: fluorescence due to solar excitation of the electronic states of OH [8] and prompt emission following the photodissociation of water, which produces the OH radical in electronic, vibrational and rotational excited states [9, 10]. We will compare the observed line intensities with those expected from these mechanisms, using the comet water productions determined from Herschel [6, 7], in order to better constrain the excitation of cometary OH.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/107050
Other URL :	http://adsabs.harvard.edu/abs/2011epsc.conf..436C

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