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Updated: Jul 19, 2026
10:35
Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
レンズ付きクワザール0957+56161で明らかにされた,ガスに富んだ銀河のペア
Planesas1, Martin-Pintado, Neri
1Observatorio Astronomico Nacional (IGN), Apartado 1143, E-28800 Alcala de Henares, Spain. Institut de Radio Astronomie Millimetrique, F-38460 Saint Martin d'Heres, France. Instituto de Fisica de Cantabria (CSIC-UC), Facultad de Ci.
Science (New York, N.Y.)
|January 5, 2000
まとめ
レンズクワザール0957+561の宿主銀河で分子ガスが検出され,広範囲の分布と伴星銀河が明らかにされました. この発見は,ハッブル定数 (H0) の測定を洗練するのに役立ちます.
科学分野:
- 天文学 天文学
- 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:
- 分子ガスは銀河の進化に不可欠です.
- レンズ化されたクォーサーは,遠くの銀河の拡大された景色を提供します.
- 炭素一酸化物 (CO) の排出は分子ガスの痕跡である.
研究 の 目的:
- レンズクワザール0957+561.1.の宿主銀河の分子ガスを検知し,特徴づけること.
- 分子ガスの分布と動力学を調査する.
- 宇宙学的測定のためにレンズ付きクエーザーを使用する可能性を評価する.
主な方法:
- 放射能天文学を用いた一酸化炭素 (CO) 排出ラインの検出.
- COの光度分析により,分子ガス質量を推定する.
- ガス動力学と相対速度を決定するための光譜分析.
主要な成果:
- 宿主銀河 (4×10^9太陽質量) で検出された分子ガス分布の拡大.
- 重力レンズ付き,ガスに富んだ伴星銀河 (1.4×10^9太陽質量) の証拠です.
- 伴星銀河の相対速度は,秒速660kmで測定されました.
結論:
- 高赤偏移レンズクエーザーは,有意な分子ガス貯蔵庫を宿している.
- この研究は,レンズレンズによる銀河の特性探査の実現可能性を示しています.
- ハッブル定数 (H0) の改善された測定は,この技術によって可能である.
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