气候变化领域集成服务门户(CCPortal): Gas-rich galaxy pair unveiled in the lensed quasar 0957+561

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DOI	10.1126/science.286.5449.2493
	Gas-rich galaxy pair unveiled in the lensed quasar 0957+561
	Planesas P.; Martín-Pintado J.; Neri R.; Colina L.
发表日期	1999
ISSN	0036-8075
起始页码	2493
结束页码	2495
卷号	286 期号:5449
英文摘要	Molecular gas in the host galaxy of the lensed quasar 0957+561 (QSO 0957+561) at the redshift of 1.41 has been detected in the carbon monoxide (CO) line. This detection shows the extended nature of the molecular gas distribution in the host galaxy and the pronounced lensing effects due to the differentially magnified CO luminosity at different velocities. The estimated mass of molecular gas is about 4 x 109 solar masses, a molecular gas mass typical of a spiral galaxy like the Milky Way. A second, weaker component of CO is interpreted as arising from a close companion galaxy that is rich in molecular gas and has remained undetected so far. Its estimated molecular gas mass is 1.4 x 109 solar masses, and its velocity relative to the main galaxy is 660 kilometers per second. The ability to probe the molecular gas distribution and kinematics of galaxies associated with high-redshift lensed quasars can be used to improve the determination of the Hubble constant H(o).
英文关键词	article; astronomy; atmosphere; chemical composition; cosmic radiation; gas analysis; priority journal
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245095
作者单位	Observ. Astronómico Nacional, Apartado 1143, E-28800 Alcalá de Henares, Spain; Inst. de Radio Astron. Millimetrique, F-38460 Saint Martin d'Hères, France; Instituto de Fisica de Cantabria, Facultad de Ciencias, E-39005 Santander, Spain
推荐引用方式 GB/T 7714	Planesas P.,Martín-Pintado J.,Neri R.,et al. Gas-rich galaxy pair unveiled in the lensed quasar 0957+561[J],1999,286(5449).
APA	Planesas P.,Martín-Pintado J.,Neri R.,&Colina L..(1999).Gas-rich galaxy pair unveiled in the lensed quasar 0957+561.Science,286(5449).
MLA	Planesas P.,et al."Gas-rich galaxy pair unveiled in the lensed quasar 0957+561".Science 286.5449(1999).