{"@context":"http://iiif.io/api/presentation/4/context.json","id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/manifest","type":"Manifest","label":{"ja":["さそり座U星"],"en":["U Scorpii"]},"summary":{"ja":["新星（ノヴァ）とは、突然に数十倍から数百倍も明るくなり、その後わずか数か月で元の明るさに戻る星である。こうした新星系では、白色矮星――すべての燃料を使い果たした太陽に似た星のコンパクトな残骸――が、近くの伴星から物質を引き寄せ、十分に蓄積すると白色矮星の表面で熱核爆発が引き起こされる。さそり座U星（U Scorpii）と呼ばれる天体のこうした新星爆発のモデルは、観測に基づく科学的シミュレーションによるものである。このモデルは、この系で最後に観測された2010年1月28日の爆発から最初の18時間を探る。天文学者たちは、私たちから約40,000光年離れたさそり座U星が、ほぼ10年に一度爆発するのを見てきた。したがって、この系は間もなく次の爆発を起こすはずである。"],"en":["A nova is a star that suddenly becomes tens to hundreds of times brighter, then fades to its former brightness in just a few months. In these nova systems, a white dwarf — the compact remains of a Sun-like star that has burned all of its fuel — pulls material from a nearby companion star until enough accumulates to trigger a thermonuclear explosion on the white dwarf’s surface. The model of such a nova outburst of an object called U Scorpii is based on a scientific simulation, informed by observations. It explores the first 18 hours after the last outburst observed on January 28, 2010 in the system. Astronomers have seen U Scorpii - which is about 40,000 light years away from us - erupt about once every decade, so this system is due for another outburst very soon. "]},"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:b9faba9c-71f0-4c31-8b3e-8e01d22195ca/scene-image-low.jpg","type":"Image","format":"image/jpeg"}],"homepage":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/item/u-scorpii-b9faba","type":"Text","label":{"ja":["詳細ページ"],"en":["Detail page"]},"format":"text/html"},{"id":"https://www.si.edu/object/dpo_3d_200118","type":"Text","label":{"ja":["出典"],"en":["Source"]},"format":"text/html"}],"rendering":[{"id":"https://3d-api.si.edu/content/document/3d_package:b9faba9c-71f0-4c31-8b3e-8e01d22195ca/UScorpii-150k-2048-medium.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/u-scorpii-b9faba/scene/1","type":"Scene","label":{"ja":["さそり座U星"],"en":["U Scorpii"]},"backgroundColor":"#000000","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/page","type":"AnnotationPage","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/model","type":"Annotation","motivation":"painting","body":{"id":"https://3d-api.si.edu/content/document/3d_package:b9faba9c-71f0-4c31-8b3e-8e01d22195ca/UScorpii-150k-2048-medium.glb","type":"Model","format":"model/gltf-binary"},"target":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1"}]}],"annotations":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/annotations","type":"AnnotationPage","items":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/annotation/kZAUFoYh79wF","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"新星（ノヴァ）とは、突然に数十倍から数百倍も明るくなり、その後わずか数か月で元の明るさに戻る星である。\n\nこの新星系では、白色矮星――すべての燃料を使い果たした太陽に似た星のコンパクトな残骸――が、近くの伴星から物質を引き寄せ、十分に蓄積すると白色矮星の表面で爆発が引き起こされる。","label":"さそり座U星の新星","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":1.1220527,"y":26.6912027,"z":1.4218208,"normal":[0.0264325,0.999607,0.0093329]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/annotation/KlKmxPSjMvqC","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"さそり座U星の最新の新星爆発は2010年1月28日に起きた。新星爆発の際に放出された恒星物質は濃い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/u-scorpii-b9faba/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-32.7344774,"y":16.740709,"z":5.2231908,"normal":[-0.1417014,0.831008,0.5379093]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/annotation/dM90g34h6v9K","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"新星は爆発を伴い、周囲のガス（より淡い紫色で示す）の中を超音速で伝わる衝撃波を生み出す。","label":"衝撃波","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":0.1660097,"y":11.3490587,"z":35.5280689,"normal":[-0.9999599,0.002909,0.0084711]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/annotation/yH3sUVkOu6vy","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"赤色巨星の伴星は、場面の中心からわずかに外れた位置に、橙色で見えている。","label":"赤色巨星／伴星","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":32.6143969,"y":-2.9694257,"z":0.9850263,"normal":[0.9653711,-0.1154287,0.2339549]}]}},{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1/annotation/exansk20JSn3","type":"Annotation","motivation":["commenting"],"body":{"type":"TextualBody","value":"白色矮星（爆発が起きた場所）は小さすぎて見えないが、天体のまさに中心に収まっているはずである。","label":"白色矮星","language":"ja","format":"text/plain"},"target":{"type":"SpecificResource","source":[{"id":"https://archivebase.ldas.jp/na-kamura-1263/smithsonian-3d/api/iiif/4/u-scorpii-b9faba/scene/1","type":"Scene"}],"selector":[{"type":"PointSelector","x":-0.9898492,"y":-2.2696943,"z":16.7741371,"normal":[-0.0383414,-0.0012709,0.9992639]}]}}]}]}]}