Reference : Extremely Organic-rich Coma of Comet C/2010 G2 (Hill) during its Outburst in 2012
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/169063
Extremely Organic-rich Coma of Comet C/2010 G2 (Hill) during its Outburst in 2012
English
Kawakita, Hideyo mailto [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamitamo, Kita, Kyoto 603-8555, Japan]
Dello Russo, Neil [The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723-6099, USA]
Vervack, Ron [The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723-6099, USA]
Kobayashi, Hitomi [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamitamo, Kita, Kyoto 603-8555, Japan]
DiSanti, Mike A. [Goddard Center for Astrobiology, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA]
Opitom, Cyrielle mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
Weaver, Harold A. [The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723-6099, USA <ID system="ORCID">0000-0003-0951-7762</ID>]
Cochran, Anita L. [McDonald Observatory, 1 University Station C1402, Austin, TX 78712-0259, USA]
Harris, Walter M. [Department of Applied Sciences, University of California, One Shields Avenue, Davis, CA 95616, USA]
Bockelée-Morvan, Dominique [LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 Place Jules Janssen, F-92195 Meudon, France]
Biver, Nicolas [LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 Place Jules Janssen, F-92195 Meudon, France]
Crovisier, Jacques [LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 Place Jules Janssen, F-92195 Meudon, France]
McKay, Adam J. [New Mexico State University, Las Cruces, NM 88001, USA]
Manfroid, Jean mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Gillon, Michaël mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa) >]
1-Jun-2014
Astrophysical Journal
IOP Publishing
788
110
Yes (verified by ORBi)
International
0004-637X
1538-4357
[en] comets: general ; comets: individual: C/2010 G2 (Hill ; ISM: molecules ; protoplanetary disks
[en] We performed high-dispersion near-infrared spectroscopic observations of comet C/2010 G2 (Hill) at 2.5 AU from the Sun using NIRSPEC (R ≈ 25,000) at the Keck II Telescope on UT 2012 January 9 and 10, about a week after an outburst had occurred. Over the two nights of our observations, prominent emission lines of CH[SUB]4[/SUB] and C[SUB]2[/SUB]H[SUB]6[/SUB], along with weaker emission lines of H[SUB]2[/SUB]O, HCN, CH[SUB]3[/SUB]OH, and CO were detected. The gas production rate of CO was comparable to that of H[SUB]2[/SUB]O during the outburst. The mixing ratios of CO, HCN, CH[SUB]4[/SUB], C[SUB]2[/SUB]H[SUB]6[/SUB], and CH[SUB]3[/SUB]OH with respect to H[SUB]2[/SUB]O were higher than those for normal comets by a factor of five or more. The enrichment of CO and CH[SUB]4[/SUB] in comet Hill suggests that the sublimation of these hypervolatiles sustained the outburst of the comet. Some fraction of water in the inner coma might exist as icy grains that were likely ejected from nucleus by the sublimation of hypervolatiles. Mixing ratios of volatiles in comet Hill are indicative of the interstellar heritage without significant alteration in the solar nebula.
http://hdl.handle.net/2268/169063
also: http://hdl.handle.net/2268/171492
10.1088/0004-637X/788/2/110
http://adsabs.harvard.edu/abs/2014ApJ...788..110K

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
apj_788_2_110.pdfPublisher postprint811.82 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.