(2060) キロンのCNエミッションの検出
まとめ
既知の最大の彗星である (2060) キロンは,中性ガス種を検出することで彗星活動の兆候を示しています. この遠いガス放出は,小さな表面からの二酸化炭素の噴出が,その活動を誘発する可能性があることを示唆している.
科学分野:
- 天文学と天体物理学について
- 惑星科学は惑星科学である.
- 彗星科学 彗星科学
背景:
- (2060) キロンは歴史的に土星と天王星の間の小惑星と考えられていた.
- 現在の理解では,キロンは既知の最大の彗星として再分類されています.
- その物理的性質は,過去10年間に重要な再評価を遂げました.
研究 の 目的:
- (2060) キロンの物理的性質と活動を調査する.
- 彗星の分類を確認するために,キロンの放射を検出し,分析する.
- 彗星の活動を大きな日中心距離で駆動するメカニズムを理解する.
主な方法:
- (2060) キロンの光譜分析.
- そのスペクトルの特定の排出線の検出.
- 観測中に太陽の中心距離の測定.
主要な成果:
- チロンのスペクトルにおけるシアン化物 (CN) 放射の検出.
- この放射は,11天文学単位以上の太陽中心距離で観測されました.
- これは,彗星に共通する中性ガス種の最も遠い検出を表しています.
結論:
- 観測されたCN放射は, (2060) Chiron.の彗星の性質を確認しています.
- 排気は,限られた表面面積から分離された二酸化炭素 (CO2) の噴出によって引き起こされる可能性が高い.
- これらの爆発は,キロンの原始的な組成の不均一性を示す可能性があります.
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