气候变化领域集成服务门户(CCPortal): A major asymmetric dust trap in a transition disk

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DOI	10.1126/science.1236770
	A major asymmetric dust trap in a transition disk
	Van Der Marel N.; Van Dishoeck E.F.; Bruderer S.; Birnstiel T.; Pinilla P.; Dullemond C.P.; Van Kempen T.A.; Schmalzl M.; Brown J.M.; Herczeg G.J.; Mathews G.S.; Geers V.
发表日期	2013
ISSN	0036-8075
起始页码	1199
结束页码	1202
卷号	340 期号:6137
英文摘要	The statistics of discovered exoplanets suggest that planets form efficiently. However, there are fundamental unsolved problems, such as excessive inward drift of particles in protoplanetary disks during planet formation. Recent theories invoke dust traps to overcome this problem. We report the detection of a dust trap in the disk around the star Oph IRS 48 using observations from the Atacama Large Millimeter/submillimeter Array (ALMA). The 0.44-millimeter-wavelength continuum map shows high-contrast crescent-shaped emission on one side of the star, originating from millimeter-sized grains, whereas both the mid-infrared image (micrometer-sized dust) and the gas traced by the carbon monoxide 6-5 rotational line suggest rings centered on the star. The difference in distribution of big grains versus small grains/gas can be modeled with a vortex-shaped dust trap triggered by a companion.
英文关键词	asymmetry; carbon monoxide; cosmology; dust; interferometer; particle motion; planetary evolution; wavelength; article; astronomy; dust; gas; mass; particle size; pressure; priority journal; signal noise ratio; velocity
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/245822
作者单位	Leiden Observatory, Leiden University, Post Office Box 9513, 2300 RA Leiden, Netherlands; Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse 1, 85748 Garching, Germany; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, United States; Heidelberg University, Center for Astronomy, Institute for Theoretical Astrophysics, Albert Ueberle Strasse 2, 69120 Heidelberg, Germany; Joint Atacama Large Millimeter/submillimeter Array (ALMA) Offices, Avenida Alonso de Cordova, Santiago, Chile; Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, Hai Dian Qu, 100871 Beijing, China; Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland
推荐引用方式 GB/T 7714	Van Der Marel N.,Van Dishoeck E.F.,Bruderer S.,et al. A major asymmetric dust trap in a transition disk[J],2013,340(6137).
APA	Van Der Marel N..,Van Dishoeck E.F..,Bruderer S..,Birnstiel T..,Pinilla P..,...&Geers V..(2013).A major asymmetric dust trap in a transition disk.Science,340(6137).
MLA	Van Der Marel N.,et al."A major asymmetric dust trap in a transition disk".Science 340.6137(2013).