巨大な銀河におけるブラックホールによる恒星形成
Ignacio Martín-Navarro1,2, Jean P Brodie2, Aaron J Romanowsky1,3
1University of California Observatories, 1156 High Street, Santa Cruz, California 95064, USA.
Nature
|January 2, 2018
まとめ
巨大な銀河には 超大質量ブラックホールがあり 恒星形成を制御しています ブラックホールの質量が増えると 恒星形成が早く 効率的に消えるようになり 恒星形成の連続的な相互作用が 明らかになるのです
科学分野:
- 天体物理学
- 銀河の形成 と 進化
- ブラックホール物理学
背景:
- 超大質量ブラックホールは 巨大な銀河の中心にある
- 銀河形成理論では ブラックホールのフィードバックが 恒星形成を制御します
- これまでのシミュレーションでは このフィードバックなしでは 銀河の特性を再現できませんでした
研究 の 目的:
- 超大質量ブラックホールと 恒星形成の共同進化の観測証拠を調査する
- 銀河の恒星形成の歴史に ブラックホールの質量の影響を理解するためです
主な方法:
- 近くの巨大な銀河から集積された光学スペクトルの分析
- 銀河の星形成の歴史を測定する.
- ブラックホールの質量と恒星形成効率の相関分析
主要な成果:
- 銀河の恒星形成の歴史は 中央の超大質量ブラックホールに 依存しています
- ブラックホールの質量は 初期の宇宙における ガス冷却速度と相関しています
- 質量が高いブラックホールは 恒星形成が早く 効率的に停止します
結論:
- 超大質量ブラックホールの質量と 銀河の恒星形成の間の直接的な観測関連があります
- ブラックホールの活動は 銀河の生涯を通じて バリオン冷却と恒星形成に影響します
- この発見は理論的なモデルと 観測データを調和させ 銀河の進化の理解を深めるのです
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