クラブ星雲の中で,貴重ガス分子イオン36ArH+が検出されました
M J Barlow1, B M Swinyard, P J Owen
1Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK.
Science (New York, N.Y.)
|December 17, 2013
まとめ
天文学者は初めて,ハーシェル宇宙天文台を使って宇宙で貴重ガス分子,特にアルゴン水化物 (ArH+) を検出しました. カラブ星雲のこの発見は,超新星からのアルゴン-36の起源に関する理論を裏付けている.
科学分野:
- アストロケミストリー アストロケミストリー
- ラジオ天文学 ラジオ天文学
- スペクトル顕微鏡検査です.
背景:
- 高貴ガスの分子は,星間空間ではこれまで検出されていませんでした.
- クラブ星雲は,分子水素とイオン化されたアルゴンを含む超新星残骸です.
研究 の 目的:
- 宇宙で貴重ガス分子を検出するために.
- カニの星雲の組成を調べるために.
主な方法:
- ヘルシェル宇宙天文台を利用してスペクトルを取得しました.
- アルゴン水化物 (ArH+) の放射線に関する分析されたスペクトルデータ.
主要な成果:
- クラブ星雲の617.5 GHzと1234.6 GHzで (36) ArH+の放射線が検出されました.
- 巨大な恒星の爆発的な核合成から生じるアルゴン-36の存在が確認されました.
- 部分イオン化された領域における電子衝突が,おそらくの刺激メカニズムとして特定された.
結論:
- これは,宇宙で貴重ガス分子が初めて検出されたことを表しています.
- この発見は,アルゴン-36の起源が超新星事件によるという理論を裏付けている.
- 電子衝突が (36) ArH+ 放出の興奮源であると確認された.
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