The JCMT Legacy Survey of the Gould Belt: a first look at Orion B with HARP

被引：70

作者：

Buckle, J. V. ^{[1
,2
]}

Curtis, E. I. ^{[1
,2
]}

Roberts, J. F. ^{[3
]}

White, G. J. ^{[4
,5
]}

Hatchell, J. ^{[6
]}

Brunt, C. ^{[6
]}

Butner, H. M. ^{[7
,8
]}

Cavanagh, B. ^{[8
]}

Chrysostomou, A. ^{[8
,9
]}

Davis, C. J. ^{[8
]}

Duarte-Cabral, A. ^{[10
]}

Etxaluze, M. ^{[4
,5
]}

Di Francesco, J. ^{[11
,12
]}

Friberg, P. ^{[8
]}

Friesen, R. ^{[11
,12
]}

Fuller, G. A. ^{[10
]}

Graves, S. ^{[1
,2
]}

Greaves, J. S. ^{[13
]}

Hogerheijde, M. R. ^{[14
]}

Johnstone, D. ^{[11
,12
]}

Matthews, B. ^{[11
]}

Matthews, H. ^{[15
]}

Nutter, D. ^{[16
]}

Rawlings, J. M. C. ^{[17
]}

Richer, J. S. ^{[1
,2
]}

Sadavoy, S. ^{[11
,12
]}

Simpson, R. J. ^{[16
]}

Tothill, N. F. H. ^{[6
]}

Tsamis, Y. G. ^{[18
]}

Viti, S. ^{[17
]}

Ward-Thompson, D. ^{[16
]}

Wouterloot, J. G. A. ^{[8
]}

Yates, J. ^{[17
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Astrophys Grp, Cambridge CB3 0HE, England

[2] Univ Cambridge, Inst Astron, Kavli Inst Cosmol, Cambridge CB3 0HA, England

[3] CSIC INTA, Ctr Astrobiol, E-28850 Madrid, Spain

[4] Open Univ, Dept Phys & Astron, Milton Keynes MK7 6AA, Bucks, England

[5] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11 0QX, Oxon, England

[6] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

[7] James Madison Univ, Dept Phys & Astron, Harrisonburg, VA 22807 USA

[8] Joint Astron Ctr, Hilo, HI 96720 USA

[9] Univ Hertfordshire, Sch Phys Astron & Math, Hatfield AL10 9AB, Herts, England

[10] Univ Manchester, Jodrell Bank, Ctr Astrophys, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[11] Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada

[12] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada

[13] Univ St Andrews, Scottish Univ Phys Alliance, St Andrews KY16 9SS, Fife, Scotland

[14] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

[15] Domin Radio Astrophys Observ, Natl Res Council Canada, Penticton, BC V2A 6J9, Canada

[16] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales

[17] UCL, Dept Phys & Astron, London WC1E 6BT, England

[18] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2010年 / 401卷 / 01期

关键词：

molecular data; stars: formation; ISM: kinematics and dynamics; submillimetre; STAR-FORMING REGIONS; MOLECULAR LINE OBSERVATIONS; COMPACT RADIO-SOURCES; HIGH-RESOLUTION; NGC; 2024; BIPOLAR OUTFLOW; CARBON-MONOXIDE; DENSE CORES; INTERSTELLAR-MEDIUM; CLUMP DISTRIBUTION;

D O I：

10.1111/j.1365-2966.2009.15619.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Gould Belt Legacy Survey will survey nearby star-forming regions (within 500 pc), using Heterodyne Array Receiver Programme (HARP), Submillimetre Common-User Bolometer Array 2 and Polarimeter 2 on the James Clerk Maxwell Telescope. This paper describes the initial data obtained using HARP to observe 12CO, 13CO and C18O J = 3 -> 2 towards two regions in Orion B, NGC 2024 and NGC 2071. We describe the physical characteristics of the two clouds, calculating temperatures and opacities utilizing all the three isotopologues. We find good agreement between temperatures calculated from CO and from dust emission in the dense, energetic regions. We determine the mass and energetics of the clouds, and of the high-velocity material seen in 12CO emission, and compare the relative energetics of the high- and low-velocity material in the two clouds. We present a clumpfind analysis of the 13CO condensations. The slope of the condensation mass functions, at the high-mass ends, is similar to the slope of the initial mass function.

引用

页码：204 / 222

页数：19

共 38 条

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