{"@context":"http://iiif.io/api/presentation/4/context.json","id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/manifest","type":"Manifest","label":{"ja":["さそり座V745（V745 Sco）"],"en":["V745 SCO"]},"summary":{"ja":["V745 Sco（さそり座V745）は、赤色巨星と白色矮星が重力で結び付いた連星系である。この2つの恒星は互いに非常に近い軌道を回っているため、赤色巨星の外層が白色矮星の強い重力によって引きはがされる。この物質は徐々に白色矮星の表面へ降り積もっていく。やがて、白色矮星上に十分な物質が蓄積すると、巨大な熱核爆発が引き起こされ、連星が劇的に増光する。これを新星（ノヴァ）と呼ぶ。"],"en":["V745 Sco is a binary star system that consists of a red giant star and a white dwarf locked together by gravity. These two stellar objects orbit so closely around one another that the outer layers of the red giant are pulled away by the intense gravitational force of the white dwarf. This material gradually falls onto the surface of the white dwarf. Over time, enough material may accumulate on the white dwarf to trigger a colossal thermonuclear explosion, causing a dramatic brightening of the binary called a nova."]},"metadata":[{"label":{"ja":["museum"]},"value":{"ja":["スミソニアン天体物理観測所"],"en":["Smithsonian Astrophysical Observatory"]}}],"rights":"http://creativecommons.org/publicdomain/zero/1.0/","thumbnail":[{"id":"https://3d-api.si.edu/content/document/3d_package:52bc894c-5e67-4c0a-bbc4-0e7d4d99b05e/scene-image-low.jpg","type":"Image","format":"image/jpeg"}],"homepage":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/item/v745-sco-52bc89","type":"Text","label":{"ja":["詳細ページ"],"en":["Detail page"]},"format":"text/html"},{"id":"https://www.si.edu/object/dpo_3d_200123","type":"Text","label":{"ja":["出典"],"en":["Source"]},"format":"text/html"}],"rendering":[{"id":"https://3d-api.si.edu/content/document/3d_package:52bc894c-5e67-4c0a-bbc4-0e7d4d99b05e/resources/V745SCO-150k-4096_std.glb","type":"Model","label":{"ja":["3Dモデル (GLB)"],"en":["3D model (GLB)"]},"format":"model/gltf-binary"}],"items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene","label":{"ja":["さそり座V745（V745 Sco）"],"en":["V745 SCO"]},"backgroundColor":"#000000","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/page","type":"AnnotationPage","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/model","type":"Annotation","motivation":"painting","body":{"id":"https://3d-api.si.edu/content/document/3d_package:52bc894c-5e67-4c0a-bbc4-0e7d4d99b05e/resources/V745SCO-150k-4096_std.glb","type":"Model","format":"model/gltf-binary"},"target":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1"}]}],"annotations":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotations","type":"AnnotationPage","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/CH3p7Q2fmrsW","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"白色矮星の強い重力が赤色巨星の外層をより小さな星の表面へ引き寄せ、爆発を引き起こす。爆発によって放出された質量は紫色で示されている。","label":"放出物","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-18.0480881,"y":-12.3105082,"z":13.2625785,"normal":[0.0169787,-0.002245,0.9998533]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/iHZXtKKSkiuS","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"放出物質中に見える空洞は、白色矮星の表面から出た破片が赤色巨星に衝突して減速した結果である。","label":"空洞","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-2.8640883,"y":0.810149,"z":9.2719771,"normal":[-0.8581251,0.1023782,0.5031302]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/2EWw7l6ADSjg","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"爆風波をオフにすると、この小さな180度の8の字型の不規則な形が現れる。","label":"視覚的説明 3","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":11.8251105,"y":-17.2059535,"z":13.1152871,"normal":[0.0012941,-0.0023268,0.9999965]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/xE5NIZveC7fA","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"爆風波のように滑らかでふくらんでいるのではなく、中心の源から枝分かれする2房のブドウ、あるいは私たちの2つの肺の肺胞の枝のようで、ずんぐりとした指状の物質が外側を指している。","label":"視覚的説明 4","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":4.8879502,"y":-12.5085548,"z":-6.142601,"normal":[-0.1190567,0.0017296,-0.992886]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/xHc5oAmHv4Eq","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"平らに切り取られた面はくり抜かれており、完全には対称でない。実際、一方の側が押し込まれ、その壁と爆風波の壁との間に隙間すなわち空洞ができている。この噴出を引き起こした連星系の白色矮星は、この空洞の中に位置している。","label":"視覚的説明 5","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-4.6757244,"y":-4.1819102,"z":7.3650315,"normal":[-0.749451,0.2684285,0.6052019]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/Lkfse76LunNn","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"V745 Scoは、赤色巨星と白色矮星が互いに非常に近い軌道を回る連星系である。","label":"連星系","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":0.0652801,"y":33.0331231,"z":11.8605573,"normal":[-0.001804,0.9941802,-0.1077137]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/4M9XXRTRZ6DC","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"最新の新星爆発は2014年2月6日に観測された。このモデルは、爆発から約17日後の構造を、爆風波を黄色で示している。","label":"爆風波","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-20.4898869,"y":22.6276697,"z":6.6118045,"normal":[-0.7476287,0.6288913,-0.2134172]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/y80fF2AZs2aG","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"V745のモデルが、滑らかで黄色い、丸みを帯びた砂時計の形として現れる。外から見るとふくらんだ8の字のようで、8歳の誕生日に持つ子ども向けの数字「8」の風船が、穴が消えるほど膨らまされたのに似ている。この黄色い部分は爆風波であり、新星爆発によって外側へ押し出されたエネルギーの外殻である。","label":"視覚的説明 1","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-8.6400562,"y":16.4406886,"z":-11.0113827,"normal":[-0.3318791,0.3146222,-0.8893081]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/94hl6bVJU0hc","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"しかしモデルの半分が切り取られており、平らな部分をもつ断面図として見える。3Dプリントするとテーブルの上に置くことができ、複雑な内部構造――放出物、すなわち新星爆発で投げ出された物質、モデルではピンク色――を隠している。","label":"視覚的説明 2","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-20.2046647,"y":-16.1597468,"z":13.2297969,"normal":[0.0012941,-0.0023269,0.9999963]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1/annotation/WBdij2zk4V2I","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"爆風波を元に戻して放出物をオフにすると、爆風波の内側の表面が現れる。まるで放出物の房状の形が刻印されているかのようである。","label":"視覚的説明 6","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/v745-sco-52bc89/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-0.21636,"y":17.197875,"z":-1.2828809,"normal":[-0.4329399,0.8767027,0.2096549]}]}}]}]}]}