{"created":"2023-06-26T11:01:35.216229+00:00","id":2327,"links":{},"metadata":{"_buckets":{"deposit":"fbefd66b-e3aa-4acc-9891-eb02f7d027ab"},"_deposit":{"created_by":32,"id":"2327","owners":[32],"pid":{"revision_id":0,"type":"depid","value":"2327"},"status":"published"},"_oai":{"id":"oai:oist.repo.nii.ac.jp:00002327","sets":["6:16"]},"author_link":["15413","15411","15412"],"item_10001_biblio_info_7":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-09-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageStart":"81","bibliographicVolumeNumber":"23","bibliographic_titles":[{},{"bibliographic_title":"Granular Matter","bibliographic_titleLang":"en"}]}]},"item_10001_creator_3":{"attribute_name":"Author","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Sabuwala, Tapan"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Chakraborty, Pinaki"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Shinbrot, Troy"}],"nameIdentifiers":[{}]}]},"item_10001_description_5":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"Rapidly spinning and loosely aggregated asteroids appear to take on diamond-shaped profiles, with elevated poles as well as equators. The evolutionary processes that form these characteristic shapes remain a matter of debate. In this paper, we propose a novel model, based on debris accretion, to explain these diamond-shaped profiles. We derive an analytic expression for the shapes of such rapidly spinning rubble piles based on the principle that as rubble is deposited it assumes a critical angle of repose. We show that this expression correctly reproduces diamond shaped profiles. We also conduct granular simulations of debris deposition and show that simulated shapes are in striking accord with both observations and analytical results. Our results suggest that non-uniform debris accumulation, which is overlooked in current models, may play a cardinal role in the formation of diamond-shaped asteroids.","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_publisher":"Springer Nature"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1007/s10035-021-01152-z","subitem_relation_type_select":"DOI"}}]},"item_10001_relation_17":{"attribute_name":"Related site","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://link.springer.com/article/10.1007%2Fs10035-021-01152-z","subitem_relation_type_select":"URI"}}]},"item_10001_rights_15":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_rights":"© 2021 The Author(s)."}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1434-7636","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"1434-5021","subitem_source_identifier_type":"ISSN"}]},"item_10001_version_type_20":{"attribute_name":"Author's flag","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-10-15"}],"displaytype":"detail","filename":"Sabuwala-2021-Bennu and Ryugu_ diamonds in the.pdf","filesize":[{"value":"1.6 MB"}],"format":"application/pdf","license_note":"Creative Commons Attribution 4.0 International(https://creativecommons.org/licenses/by/4.0/)","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Sabuwala-2021-Bennu and Ryugu_ diamonds in the","url":"https://oist.repo.nii.ac.jp/record/2327/files/Sabuwala-2021-Bennu and Ryugu_ diamonds in the.pdf"},"version_id":"f126e6c3-5903-4685-8782-4578c057267f"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Rubble pile asteroids","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Rotating asteroids","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Granular material","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Discrete element method","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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Bennu and Ryugu: diamonds in the sky","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Bennu and Ryugu: diamonds in the sky","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"32","path":["16"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-10-15"},"publish_date":"2021-10-15","publish_status":"0","recid":"2327","relation_version_is_last":true,"title":["Bennu and Ryugu: diamonds in the sky"],"weko_creator_id":"32","weko_shared_id":32},"updated":"2023-06-26T11:33:02.497351+00:00"}