{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1362825895215765760.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1086/527558"}},{"identifier":{"@type":"DOI","@value":"10.48550/arxiv.0712.1858"}}],"dc:title":[{"@value":"Comet 9P/Tempel 1: Interpretation with the<i>Deep Impact</i>Results"}],"description":[{"notation":[{"@value":"According to our common understandings, the original surface of a short-period comet nucleus has been lost by sublimation processes during its close approaches to the Sun. Sublimation results in the formation of a dust mantle on the retreated surface and in chemical differentiation of ices over tens or hundreds of meters below the mantle. In the course of NASA's Deep Impact mission, optical and infrared imaging observations of the ejecta plume were conducted by several researchers, but their interpretations of the data came as a big surprise: (1) The nucleus of comet 9P/Tempel 1 is free of a dust mantle, but maintains its pristine crust of submicron-sized carbonaceous grains; (2) Primordial materials are accessible already at a depth of several tens of cm with abundant silicate grains of submicrometer sizes. In this study, we demonstrate that a standard model of cometary nuclei explains well available observational data: (1) A dust mantle with a thickness of ~1-2 m builds up on the surface, where compact aggregates larger than tens of micrometers dominate; (2) Large fluffy aggregates are embedded in chemically differentiated layers as well as in the deepest part of the nucleus with primordial materials. We conclude that the Deep Impact results do not need any peculiar view of a comet nucleus."}]},{"notation":[{"@value":"11 pages, 1 figure, 1 table. ApJ letters, 673, L199-202"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825895215765761","@type":"Researcher","foaf:name":[{"@value":"Satoru Yamamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895215765765","@type":"Researcher","foaf:name":[{"@value":"Hiroshi Kimura"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895215765762","@type":"Researcher","foaf:name":[{"@value":"Evgenij Zubko"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895215765760","@type":"Researcher","foaf:name":[{"@value":"Hiroshi Kobayashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895215765763","@type":"Researcher","foaf:name":[{"@value":"Koji Wada"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895215765766","@type":"Researcher","foaf:name":[{"@value":"Masateru Ishiguro"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895215765764","@type":"Researcher","foaf:name":[{"@value":"Takafumi Matsui"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0004637X"},{"@type":"EISSN","@value":"15384357"}],"prism:publicationName":[{"@value":"The Astrophysical Journal"}],"dc:publisher":[{"@value":"American Astronomical Society"}],"prism:publicationDate":"2008-01-08","prism:volume":"673","prism:number":"2","prism:startingPage":"L199","prism:endingPage":"L202"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","createdAt":"2008-01-17","modifiedAt":"2021-09-01","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Astrophysics%20(astro-ph)","dc:title":"Astrophysics (astro-ph)"},{"@id":"https://cir.nii.ac.jp/all?q=FOS:%20Physical%20sciences","dc:title":"FOS: Physical sciences"},{"@id":"https://cir.nii.ac.jp/all?q=Astrophysics","dc:title":"Astrophysics"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004230792318208","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Light Scattering and Thermal Emission by Primitive Dust Particles in Planetary Systems"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708687101184","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Dust mantle of comet 9P/Tempel 1: dynamical constraints on physical properties"}]},{"@id":"https://cir.nii.ac.jp/crid/1360298339721540096","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Do twin spectral peaks of olivine particles in the thermal infrared diagnose their sizes and porosities?"}]},{"@id":"https://cir.nii.ac.jp/crid/1361131417149828352","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The morphological, elastic, and electric properties of dust aggregates in comets: A close look at COSIMA/Rosetta’s data on dust in comet 67P/Churyumov-Gerasimenko"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842091684480","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Comet dust as a mixture of aggregates and solid particles : model consistent with ground-based and space-mission results"}]},{"@id":"https://cir.nii.ac.jp/crid/2051996267021816448","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Collisional process on Comet 9/P Tempel 1 : mass loss of its dust and ice by impacts of asteroidal objects and its collisional history"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1086/527558"},{"@type":"OPENAIRE","@value":"doi_dedup___::960fca466e4c0c7cf526aa65091d01f1"},{"@type":"CROSSREF","@value":"10.1007/978-3-662-49538-4_8_references_DOI_7lTRqh5vJJPDbblIBRbjClZs9Kd"},{"@type":"CROSSREF","@value":"10.5047/eps.2008.11.003_references_DOI_7lTRqh5vJJPDbblIBRbjClZs9Kd"},{"@type":"CROSSREF","@value":"10.1051/0004-6361/201220464_references_DOI_7lTRqh5vJJPDbblIBRbjClZs9Kd"},{"@type":"CROSSREF","@value":"10.1016/j.icarus.2022.114964_references_DOI_7lTRqh5vJJPDbblIBRbjClZs9Kd"},{"@type":"CROSSREF","@value":"10.5047/eps.2008.12.001_references_DOI_7lTRqh5vJJPDbblIBRbjClZs9Kd"},{"@type":"CROSSREF","@value":"10.1016/j.pss.2019.104825_references_DOI_7lTRqh5vJJPDbblIBRbjClZs9Kd"}]}