气候变化领域集成服务门户(CCPortal): Imaging of the CO snow line in a solar nebula analog

CCPortal

DOI	10.1126/science.1239560
	Imaging of the CO snow line in a solar nebula analog
	Qi C.; Öberg K.I.; Wilner D.J.; D'Alessio P.; Bergin E.; Andrews S.M.; Blake G.A.; Hogerheijde M.R.; Van Dishoeck E.F.
发表日期	2013
ISSN	0036-8075
起始页码	630
结束页码	632
卷号	341 期号:6146
英文摘要	Planets form in the disks around young stars. Their formation efficiency and composition are intimately linked to the protoplanetary disk locations of "snow lines" of abundant volatiles. We present chemical imaging of the carbon monoxide (CO) snow line in the disk around TW Hya, an analog of the solar nebula, using high spatial and spectral resolution Atacama Large Millimeter/Submillimeter Array observations of diazenylium (N2H +), a reactive ion present in large abundance only where CO is frozen out. The N2H+ emission is distributed in a large ring, with an inner radius that matches CO snow line model predictions. The extracted CO snow line radius of ∼30 astronomical units helps to assess models of the formation dynamics of the solar system, when combined with measurements of the bulk composition of planets and comets.
英文关键词	carbon monoxide; astronomy; carbon monoxide; cation; chemical composition; comet; imaging method; prediction; snowline; solar system; spectral resolution; volatile substance; article; astronomy; chemical structure; imaging; kinematics; Precambrian; priority journal; Hya
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/245146
作者单位	Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, United States; Departments of Chemistry and Astronomy, University of Virginia, Charlottesville, VA 22904, United States; Centro de Radioastronomõa Y Astrofisica, Universidad Nacional Autonoma de Mexico (UNAM), 58089 Mexico City, Mexico; Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, United States; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, United States; Leiden Observatory, Leiden University, 2300 RA Leiden, Netherlands; Max Planck Institute for Extraterrestrial Physics, 85748 Garching, Germany
推荐引用方式 GB/T 7714	Qi C.,Öberg K.I.,Wilner D.J.,et al. Imaging of the CO snow line in a solar nebula analog[J],2013,341(6146).
APA	Qi C..,Öberg K.I..,Wilner D.J..,D'Alessio P..,Bergin E..,...&Van Dishoeck E.F..(2013).Imaging of the CO snow line in a solar nebula analog.Science,341(6146).
MLA	Qi C.,et al."Imaging of the CO snow line in a solar nebula analog".Science 341.6146(2013).