A search for southern ultracool dwarfs in young moving groups

	A search for southern ultracool dwarfs in young moving groups
	Clarke, JRA 1; Pinfield, DJ 1; Galvez-Ortiz, MC 1; Jenkins, JS 2; Burningham, B 1; Deacon, NR 3,4; Jones, HRA 1; R. S. Pokorny 5; Barnes, JR 1; Day-Jones, AC 1,2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2010-02-11
卷号	402 期号:1 页码:575-588
关键词	stars: kinematics stars: low-mass brown dwarfs
ISSN号	0035-8711
通讯作者	Clarke, JRA (reprint author), Univ Hertfordshire, Ctr Astrophys Res, Coll Lane, Hatfield AL10 9AB, Herts, England.
产权排序	第五完成单位
英文摘要	We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups (MGs) using photometric and astrometric selection techniques. Of these objects, we present high-resolution spectroscopy for seven candidates and combine these with previous measurements from the literature to determine spectral types and radial velocities. We thus constrain distance and space motion spectroscopically, allowing the kinematic membership of the MGs to be assessed. Possible membership of MGs has allowed ages and metallicities to be constrained for these objects and evolutionary models have been used to estimate their mass. We estimate that up to similar to 75 of our candidate MG members should be genuine, and discuss future work that will confirm and exploit this major new sample.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	LOW-MASS STARS ; PROPER MOTION STARS ; STELLAR KINEMATIC GROUPS ; URSA-MAJOR GROUP ; HIGH-RESOLUTION SPECTROSCOPY ; DIGITIZED SKY SURVEY ; M TELESCOPE PROGRAM ; L FIELD DWARFS ; BROWN-DWARFS ; SOLAR NEIGHBORHOOD
收录类别	SCI
原文出处	http://mnras.oxfordjournals.org/content/402/1/575
语种	英语
WOS记录号	WOS:000274453500049
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4507]
专题	云南天文台_大样本恒星演化研究组
作者单位	1.Centre For Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB 2.Department of Astronomy, Universidad de Chile, Casilla Postal 36D, Santiago, Chile 3.Department of Astrophysics, Faculty of Science, Radboud University Nijmegen, PO Box 9010, 6500 GL Nijmegen, the Netherlands 4.Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA 5.Yunnan Observatory, PO Box 110, CAS, 650011 Kunming, China
推荐引用方式 GB/T 7714	Clarke, JRA,Pinfield, DJ,Galvez-Ortiz, MC,et al. A search for southern ultracool dwarfs in young moving groups[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,402(1):575-588.
APA	Clarke, JRA.,Pinfield, DJ.,Galvez-Ortiz, MC.,Jenkins, JS.,Burningham, B.,...&Day-Jones, AC.(2010).A search for southern ultracool dwarfs in young moving groups.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,402(1),575-588.
MLA	Clarke, JRA,et al."A search for southern ultracool dwarfs in young moving groups".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 402.1(2010):575-588.