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Article: Submillimetre observations of comets with Odin: 2001-2005

TitleSubmillimetre observations of comets with Odin: 2001-2005
Authors
KeywordsComets
Odin
Submillimeter Lines
Water
Issue Date2007
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/pss
Citation
Planetary And Space Science, 2007, v. 55 n. 9, p. 1058-1068 How to Cite?
AbstractThe Odin satellite, launched in February 2001, is equipped with a 1.1-m submillimetre telescope. Odin was used to observe the 557 GHz line of water with high spectral resolution in 12 comets between 2001 and 2005. Line shapes and spatial mapping provide information on the anisotropy of the outgassing and constraints on water excitation, enabling accurate measurements of the water production rate. Five comets were regularly observed over periods of more than one month to monitor the variation of their water outgassing rate with heliocentric distance. Observing campaigns have been generally coordinated with ground-based observations of molecular lines at Nançay, CSO or IRAM 30-m telescopes to obtain molecular abundances relative to water. Thanks to Odin's frequency coverage, it was also possible to detect the H 2 18O 548 GHz line, first in comet 153P/Ikeya-Zhang in April 2002 [Lecacheux, A., Biver, N., Crovisier, J. et al., 2003, Observations of water in comets with Odin. Astron. Astrophys. 402, L55-L58.] and then in comets C/2002 T7 (LINEAR), C/2001 Q4 (NEAT) and C/2004 Q2 (Machholz). The 16O/ 18O isotopic ratio (≈ 450) is consistent with the terrestrial value. Ammonia has been searched for in three comets through its J K = 1 0 - 0 0 line at 572 GHz and was tentatively detected in C/2001 Q4 and C/2002 T7. The derived abundances of NH 3 relative to water are 0.5% and 0.3%, respectively, similar to values obtained in other comets with different techniques. © 2006 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/179705
ISSN
2015 Impact Factor: 1.942
2015 SCImago Journal Rankings: 1.072
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBiver, Nen_US
dc.contributor.authorBockeléeMorvan, Den_US
dc.contributor.authorCrovisier, Jen_US
dc.contributor.authorLecacheux, Aen_US
dc.contributor.authorFrisk, Uen_US
dc.contributor.authorHjalmarson, Aen_US
dc.contributor.authorOlberg, Men_US
dc.contributor.authorFlorén, HGen_US
dc.contributor.authorSandqvist, Aen_US
dc.contributor.authorKwok, Sen_US
dc.date.accessioned2012-12-19T10:03:03Z-
dc.date.available2012-12-19T10:03:03Z-
dc.date.issued2007en_US
dc.identifier.citationPlanetary And Space Science, 2007, v. 55 n. 9, p. 1058-1068en_US
dc.identifier.issn0032-0633en_US
dc.identifier.urihttp://hdl.handle.net/10722/179705-
dc.description.abstractThe Odin satellite, launched in February 2001, is equipped with a 1.1-m submillimetre telescope. Odin was used to observe the 557 GHz line of water with high spectral resolution in 12 comets between 2001 and 2005. Line shapes and spatial mapping provide information on the anisotropy of the outgassing and constraints on water excitation, enabling accurate measurements of the water production rate. Five comets were regularly observed over periods of more than one month to monitor the variation of their water outgassing rate with heliocentric distance. Observing campaigns have been generally coordinated with ground-based observations of molecular lines at Nançay, CSO or IRAM 30-m telescopes to obtain molecular abundances relative to water. Thanks to Odin's frequency coverage, it was also possible to detect the H 2 18O 548 GHz line, first in comet 153P/Ikeya-Zhang in April 2002 [Lecacheux, A., Biver, N., Crovisier, J. et al., 2003, Observations of water in comets with Odin. Astron. Astrophys. 402, L55-L58.] and then in comets C/2002 T7 (LINEAR), C/2001 Q4 (NEAT) and C/2004 Q2 (Machholz). The 16O/ 18O isotopic ratio (≈ 450) is consistent with the terrestrial value. Ammonia has been searched for in three comets through its J K = 1 0 - 0 0 line at 572 GHz and was tentatively detected in C/2001 Q4 and C/2002 T7. The derived abundances of NH 3 relative to water are 0.5% and 0.3%, respectively, similar to values obtained in other comets with different techniques. © 2006 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/pssen_US
dc.relation.ispartofPlanetary and Space Scienceen_US
dc.subjectCometsen_US
dc.subjectOdinen_US
dc.subjectSubmillimeter Linesen_US
dc.subjectWateren_US
dc.titleSubmillimetre observations of comets with Odin: 2001-2005en_US
dc.typeArticleen_US
dc.identifier.emailKwok, S: deannote@hku.hken_US
dc.identifier.authorityKwok, S=rp00716en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.pss.2006.11.010en_US
dc.identifier.scopuseid_2-s2.0-34249717800en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34249717800&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume55en_US
dc.identifier.issue9en_US
dc.identifier.spage1058en_US
dc.identifier.epage1068en_US
dc.identifier.isiWOS:000248018800008-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridBiver, N=6603734959en_US
dc.identifier.scopusauthoridBockeléeMorvan, D=7003530700en_US
dc.identifier.scopusauthoridCrovisier, J=35448565400en_US
dc.identifier.scopusauthoridLecacheux, A=7003423533en_US
dc.identifier.scopusauthoridFrisk, U=8966521600en_US
dc.identifier.scopusauthoridHjalmarson, A=15744175200en_US
dc.identifier.scopusauthoridOlberg, M=16201342800en_US
dc.identifier.scopusauthoridFlorén, HG=6602447564en_US
dc.identifier.scopusauthoridSandqvist, A=55411179800en_US
dc.identifier.scopusauthoridKwok, S=22980498300en_US
dc.identifier.citeulike6567032-

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