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Updated: Jul 10, 2026

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Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
ハッブル宇宙望遠鏡 (HST) が,シューメイカー・レヴィ9彗星を観測するキャンペーンを行いました
H A Weaver1, M F A'Hearn, C Arpigny
1Space Telescope Science Institute, Baltimore, MD 21218.
まとめ
彗星P/Shoemaker-Levy 9のハッブル観測は,彗星が解体した後,継続的な彗星活動と断片化を示した. これらの事象は,ただの破片ではなく,明確な核を示唆し,おそらく木星の磁気圏によって引き起こされた.
科学分野:
- 天文学 (astronomy) 天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは
- 惑星科学 惑星科学
- 彗星科学 彗星科学
背景:
- 彗星P/Shoemaker-Levy 9 (SL9) が破裂し,木星に衝突した.
- ハッブル宇宙望遠鏡 (HST) は,彗星の断片を体系的に観測した.
研究 の 目的:
- 彗星SL9.9のハッブル観測を分析する.
- 断片サイズ,彗星の活動,断片化行動を決定するために.
- 観測された排出量の潜在的な原因を調査する.
主な方法:
- 断片直径を推定するために,ワイドフィールド惑星カメラの画像の解凍.
- 内部昏睡の観察を通して彗星活動の分析.
- 放射 (例えば,マグネシウムイオン,連続体,OH) を検出するためのスペクトル観測.
主要な成果:
- 断片の直径は1~4kmと推定されている.
- 1994年6月下旬まで観測された継続的で弱い彗星活動.
- 核の分裂後の断片化が観察され,破片群の仮説に異議を唱える.
- マグネシウムイオンと連続体放射の爆発が検出されましたが,おそらく木星の磁気圏の静電電荷によるものです.
- H2O生産率の上限が決定されましたが,水分が少ない物体を示すものではありません.
結論:
- 彗星SL9の断片は,明確な核を持ち,継続的な活動を示していた.
- 木星の磁気圏との相互作用は,エネルギー的な出来事を引き起こす可能性があります.
- ハッブル観測は,彗星の動力学と組成に関する重要なデータを提供した.
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