The JCMT Gould Belt Survey: constraints on prestellar core properties in Orion A North

	The JCMT Gould Belt Survey: constraints on prestellar core properties in Orion A North
	Salji, C. J.1,2; Richer, J. S.1,2; Buckle, J. V.1,2; Hatchell, J.3; Kirk, H.4; Beaulieu, S. F.5; Berry, D. S.6; Broekhoven-Fiene, H.7; Currie, M. J.6; Fich, M.5
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2015-05-11
卷号	449 期号:2 页码:1769-1781
关键词	stars: formation stars: protostars submillimetre: ISM
英文摘要	We employ SCUBA-2 (Submillimetre Common-User Bolometer Array 2) observations of the Orion A North molecular cloud to derive column density and temperature maps. We apply a novel, Hessian-based structural identification algorithm for detection of prestellar cores to these data, allowing for automated generation of the prestellar mass function. The resulting mass function is observed to peak at 1.39(-0.19)(+0.18) M-circle dot, indicating a star-forming efficiency lower limit of similar to 14 per cent when compared with the Orion nebula Cluster initial mass function (IMF) peak. Additionally, the prestellar mass function is observed to decay with a high-mass power-law exponent alpha = 2.53(-0.14)(+0.16), indicating approximate functional similarity with the Salpeter IMF (alpha = 2.35). This result, when combined with the results of previous investigations suggests a regional dependence of the star-forming efficiency.
收录类别	SCI
语种	英语
WOS记录号	WOS:000355337500050
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5690]
专题	国家天文台_射电天文研究部
作者单位	1.Univ Cambridge, Cavendish Lab, Astrophys Grp, Cambridge CB3 0HE, England 2.Univ Cambridge, Inst Astron, Kavli Inst Cosmol, Cambridge CB3 0HA, England 3.Univ Exeter, Phys & Astron, Exeter EX4 4QL, Devon, England 4.NRC Herzberg Astron & Astrophys, Victoria, BC V9E 2E7, Canada 5.Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada 6.Joint Astron Ctr, Hilo, HI 96720 USA 7.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada 8.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 9.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands 10.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales
推荐引用方式 GB/T 7714	Salji, C. J.,Richer, J. S.,Buckle, J. V.,et al. The JCMT Gould Belt Survey: constraints on prestellar core properties in Orion A North[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(2):1769-1781.
APA	Salji, C. J..,Richer, J. S..,Buckle, J. V..,Hatchell, J..,Kirk, H..,...&Zhu, M..(2015).The JCMT Gould Belt Survey: constraints on prestellar core properties in Orion A North.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(2),1769-1781.
MLA	Salji, C. J.,et al."The JCMT Gould Belt Survey: constraints on prestellar core properties in Orion A North".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.2(2015):1769-1781.