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赤道偏移4.69の無線静かなクエーサーの周りの分子ガスと塵
A Omont1, P Petitjean, S Guilloteau
1Institut d'Astrophysique de Paris-CNRS, France.
Nature
|August 1, 1996
まとめ
初期の銀河は急速に星を形成した. 研究者らは,遠くのクエーサーで分子ガスと塵を検出し,宇宙初期に巨大な恒星形成の条件が存在していたことを確認した.
科学分野:
- 宇宙の進化とは,宇宙の進化である.
- 銀河の形成と進化について
- 初期の宇宙の天体物理学
背景:
- 銀河は,その歴史の初期に重要な恒星形成を経験したと考えられています.
- レッドシフト z > 4 のクエサールにおける重元素合成の証拠は,初期の分子ガスの存在を示唆しています.
- 低赤道移転銀河で見られるように,分子ガスは恒星形成に不可欠です.
研究 の 目的:
- 遠い銀河の分子ガスの存在を調査する.
- 宇宙における初期のスターバーストの条件を理解するために.
- 初期のクエーザーの組成を調べるために.
主な方法:
- ラジオ天文学を用いた塵と一酸化炭素の検出.
- 空間解像度のあるコンポーネントに排出量のマッピング.
- 宇宙距離を判定するための赤偏移分析.
主要な成果:
- ラジオ静かなクワザールBR1202-0725の粉塵と一酸化炭素放射の検出 赤道偏移z = 4.69の赤道偏移z = 4.69の赤道偏移で
- マッピングは2つの異なる物体を明らかにし,伴星銀河または重力レンズ形成を示唆しました.
- 最も遠い銀河の1つで,かなりの分子ガス質量の存在が確認されました.
結論:
- 初期の宇宙 (z=4.69) は,巨大な恒星形成に適した条件を持っていた.
- 分子ガスは,遠いクエーサーに存在し,初期の銀河進化の理論を支持しています.
- この発見は,最初の銀河の形成と成長についての洞察を提供します.
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