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dc.creatorKobayashi, H.en_US
dc.creatorBockelee-Morvan, D.en_US
dc.creatorKawakita, H.en_US
dc.creatorDello Russo, N.en_US
dc.creatorJehin, E.en_US
dc.creatorManfroid, J.en_US
dc.creatorSmette, A.en_US
dc.creatorHutsemekers, D.en_US
dc.creatorStuwe, J.en_US
dc.creatorWeiler, M.en_US
dc.creatorArpigny, C.en_US
dc.creatorBiver, N.en_US
dc.creatorCochran, A.en_US
dc.creatorCrovisier, J.en_US
dc.creatorMagain, P.en_US
dc.creatorSana, H.en_US
dc.creatorSchulz, R.en_US
dc.creatorVervack, R. J.en_US
dc.creatorWeaver, H.en_US
dc.creatorZucconi, J. M.en_US
dc.date.accessioned2016-04-22T19:43:36Z
dc.date.available2016-04-22T19:43:36Z
dc.date.issued2010-01en
dc.identifierdoi:10.15781/T2DJ4T
dc.identifier.citationKobayashi, H., D. Bockelée-Morvan, H. Kawakita, N. Dello Russo, Emmanuel Jehin, Jean Manfroid, A. Smette et al. >High-dispersion infrared spectroscopic observations of comet 8P/Tuttle with VLT/CRIRES.> Astronomy & Astrophysics 509 (Jan., 2010): A80.en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/2152/34297
dc.description.abstractWe report on the composition of the Halley-family comet (HFC) 8P/Tuttle investigated with high-dispersion near-infrared spectroscopic observations. The observations were carried out at the ESO VLT (Very Large Telescope) with the CRIRES instrument as part of a multi-wavelength observation campaign of 8P/Tuttle performed in late January and early February 2008. Radar observations suggested that 8P/Tuttle is a contact binary, and it was proposed that these components might be heterogeneous in chemistry. We determined mixing ratios of organic volatiles with respect to H(2)O and found that mixing ratios were consistent with previous near infrared spectroscopic observations obtained in late December 2007 and in late January 2008. It has been suggested that because 8P/Tuttle is a contact binary, it might be chemically heterogeneous. However, we find no evidence for chemical heterogeneity within the nucleus of 8P/Tuttle. We also compared the mixing ratios of organic molecules in 8P/Tuttle with those of both other HFCs and long period comets (LPCs) and found that HCN, C(2)H(2), and C(2)H(6) are depleted whereas CH(4) and CH(3)OH have normal abundances. This may indicate that 8P/Tuttle was formed in a different region of the early solar nebula than other HFCs and LPCs. We estimated the conversion efficiency from C(2)H(2) to C(2)H(6) by hydrogen addition reactions on cold grains by employing the C(2)H(6)/(C(2)H(6)+C(2)H(2)) ratio. The C(2)H(6)/(C(2)H(6)+C(2)H(2)) ratio in 8P/Tuttle is consistent with the ratios found in other HFCs and LPCs within the error bars. We also discuss the source of C(2) and CN based on our observations and conclude that the abundances in the comet, so at least one additional parent is needed for each species, as pointed out in previous study.en_US
dc.language.isoEnglishen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectcomets: individual: 8p/tuttleen_US
dc.subjectplanets and satellites: formationen_US
dc.subjectkuiperen_US
dc.subjectbelt: generalen_US
dc.subjectc/1996 b2 hyakutakeen_US
dc.subjecto1 hale-boppen_US
dc.subjectorganic compositionen_US
dc.subjecthydrogen-cyanideen_US
dc.subjectchemical-compositionen_US
dc.subjectspin temperaturesen_US
dc.subjectwateren_US
dc.subjectproductionen_US
dc.subjecticy materialsen_US
dc.subjecth1 leeen_US
dc.subjectratesen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleHigh-Dispersion Infrared Spectroscopic Observations Of Comet 8P/Tuttle With VLT/CRIRESen_US
dc.typeArticleen_US
dc.description.departmentAstronomyen_US
dc.identifier.doi10.1051/0004-6361/200912477en_US
dc.contributor.utaustinauthorCochran, A.en_US
dc.relation.ispartofserialAstronomy & Astrophysicsen_US


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