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Updated: May 7, 2026
08:47
Super-resolution Imaging of the Bacterial Division Machinery
Published on: January 21, 2013
銀河のz = 2.3の解明されたコンパクト領域内の激しい恒星形成
A M Swinbank1, I Smail, S Longmore
1Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE, UK. a.m.swinbank@dur.ac.uk
Nature
|March 23, 2010
まとめ
巨大な初期の銀河は,合併によって誘発された激しい恒星形成を示しています. 重力レンズは,恒星形成領域の前例のない解像度を可能にし,類似の物理を明らかにしましたが,局所銀河よりもはるかに高いエネルギーを持っています.
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
- 天体物理学 天体物理学
- コスモロジー・コスモロジーとは
背景:
- 初期の宇宙の巨大な銀河は,非常に高い速度で星を形成していた.
- 塵で覆われた銀河は重要な例であり,年間1,000太陽質量で星を形成する可能性がある.
- これらの爆発は,ガスが豊富な銀河の合併によって引き起こされる可能性が高い.
研究 の 目的:
- 初期の巨大な銀河の個々の恒星形成領域の性質を調査する.
- 現在の望遠鏡の空間解像度と感度における限界を克服するために.
- 初期の宇宙における恒星形成の物理とエネルギーについて調査する.
主な方法:
- 重力レンズによるサブミリメートル銀河SMMJ2135-0102 (赤道偏移z = 2.3259) の観測.
- 前景の銀河団レンズによって提供された32の拡大因子を利用しました.
- 高解像度サブミリメートル画像を用いて,線形スケールの解像度100パーセルを達成しました.
主要な成果:
- SMMJ2135-0102内の星形成地域を解決した.
- 地元の巨大分子雲の核に匹敵する明るさの密度を発見した.
- 観測された領域は, ~100倍大きく, ~107倍明るかった.
結論:
- z ~ 2の恒星形成の基礎となる物理は,局所銀河と似ています.
- これらの初期の恒星形成領域のエネルギーは,今日観測されるよりも大幅に高くなっています.
- 重力レンズは,高赤偏移の銀河の進化を研究するための強力なツールです.
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