{"created":"2023-06-20T14:52:24.359207+00:00","id":20548,"links":{},"metadata":{"_buckets":{"deposit":"105a1012-e4c3-482f-9514-d604649d4817"},"_deposit":{"created_by":1,"id":"20548","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"20548"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00020548","sets":["1543:1778:1791","1887:1891"]},"author_link":["196143","196145","196146","196141","196142","196144"],"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"123","bibliographicPageStart":"123","bibliographic_titles":[{"bibliographic_title":"第38回月・惑星シンポジウム"},{"bibliographic_title":"Proceedings of the 38th ISAS Lunar and Planetary Symposium","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"We model cometary dust by taking into account its formation and evolution. Light scattering, absorption, and emission properties of the dust expected from our model are compared with observations. We assume unprocessed cometary dust as primordial interstellar dust or agglomeration of the dust (Greenberg 1980; Yamamoto 1985). We use a model of Kimura et al. (2003a), in which interstellar dust is an aggregate consisting of submicron grains with an amorphous silicate core and an organic refractory mantle. Numerical and experimental simulations reveal that cluster-cluster aggregation processes take place in the early stages of particle growth. In such coagulation processes, dust is described as fractals with the fractal dimension D of approximately two. In the late stages, the fractal dimension increases and approaches D of approximately three. Therefore, unprocessed cometary dust is fractal aggregates of submicron grains having an amorphous silicate core and an organic refractory mantle. We also consider the possibility that explosive reactions of radicals in the organic refractory mantle crystallize amorphous silicates after ejection from cometary nuclei (Yamamoto & Chigai 2005). The wavelength and phase-angle dependences of intensity and linear polarization as well as the low albedo of cometary dust are correctly reproduced by our model as expected from the results in Kimura et al. (2003b). Infrared spectra of cometary dust are consistent with the hypothesis that long-period comets consist mainly of D of approximately two dust while short-period comets contain D of approximately three dust. We can even identify infrared silicate features with forsterite alone, inclusive of the feature that has been attributed to enstatite. More detailed results will be published elsewhere.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0063350033","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構宇宙科学研究本部"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"北海道大学低温科学研究所"},{"subitem_text_value":"北海道大学低温科学研究所"},{"subitem_text_value":"北海道大学低温科学研究所"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Institute of Low Temperature Science, Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"Institute of Low Temperature Science, Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"Institute of Low Temperature Science, Hokkaido University"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"木村, 宏"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"千貝, 健"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山本, 哲生"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kimura, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Chigai, Takeshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamamoto, Tetsuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"彗星ダスト","subitem_subject_scheme":"Other"},{"subitem_subject":"星間物質","subitem_subject_scheme":"Other"},{"subitem_subject":"星間空間","subitem_subject_scheme":"Other"},{"subitem_subject":"光散乱","subitem_subject_scheme":"Other"},{"subitem_subject":"集合体","subitem_subject_scheme":"Other"},{"subitem_subject":"非晶質ケイ酸塩","subitem_subject_scheme":"Other"},{"subitem_subject":"有機質耐火性マントル","subitem_subject_scheme":"Other"},{"subitem_subject":"赤外線スペクトル","subitem_subject_scheme":"Other"},{"subitem_subject":"彗星","subitem_subject_scheme":"Other"},{"subitem_subject":"cometary dust","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"interstellar matter","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"interstellar space","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"light scattering","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"aggregate","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"amorphous silicate","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"organic refractory mantle","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"infrared spectrum","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"comet","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Cometary dust modeling with aggregates consisting of submicron grains","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Cometary dust modeling with aggregates consisting of submicron grains","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["1791","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"20548","relation_version_is_last":true,"title":["Cometary dust modeling with aggregates consisting of submicron grains"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T03:48:43.098572+00:00"}