THE QUaD GALACTIC PLANE SURVEY. II. A COMPACT SOURCE CATALOG

被引：20

作者：

Culverhouse, T. ^{[1
]}

Ade, P. ^{[2
]}

Bock, J. ^{[3
,4
]}

Bowden, M. ^{[2
,5
,6
]}

Brown, M. L. ^{[7
,8
]}

Cahill, G. ^{[9
]}

Castro, P. G. ^{[10
]}

Church, S. ^{[5
,6
]}

Friedman, R. ^{[1
]}

Ganga, K. ^{[11
]}

Gear, W. K. ^{[2
]}

Gupta, S. ^{[2
]}

Hinderks, J. ^{[12
]}

Kovac, J. ^{[13
]}

Lange, A. E. ^{[4
]}

Leitch, E. ^{[3
,4
]}

Melhuish, S. J.

Memari, Y. ^{[14
]}

Murphy, J. A. ^{[9
]}

Orlando, A. ^{[4
]}

Pryke, C. ^{[1
]}

Schwarz, R. ^{[1
]}

O'Sullivan, C. ^{[9
]}

Piccirillo, L.

Rajguru, N. ^{[15
]}

Rusholme, B.

Taylor, A. N.

Thompson, K. L. ^{[5
,6
]}

Turner, A. H. ^{[2
]}

Wu, E. Y. S. ^{[5
,6
]}

Zemcov, M. ^{[3
,4
]}

机构：

[1] Univ Chicago, Kavli Inst Cosmol Phys, Dept Astron & Astrophys, Enrico Fermi Inst, Chicago, IL 60637 USA

[2] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales

[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[4] CALTECH, Pasadena, CA 91125 USA

[5] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA

[6] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[7] Univ Cambridge, Cavendish Lab, Kavli Inst Cosmol, Cambridge CB3 0HE, England

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

[9] Natl Univ Ireland Maynooth, Dept Expt Phys, Maynooth, Kildare, Ireland

[10] Univ Tecn Lisboa, CENTRA, Dept Fis, IST, P-1049001 Lisbon, Portugal

[11] Lab APC CNRS, F-75205 Paris 13, France

[12] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[13] Harvard Univ, Harvard Dept Astron, Cambridge, MA 02138 USA

[14] Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland

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

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2011年 / 195卷 / 01期

基金：

爱尔兰科学基金会; 英国科学技术设施理事会; 美国国家科学基金会;

关键词：

Galaxy: center; Galaxy: structure; H II regions; radio continuum: ISM; stars: formation; surveys; SAGITTARIUS A-ASTERISK; SUNYAEV-ZELDOVICH ARRAY; DUST CONTINUUM EMISSION; C2D LEGACY CLOUDS; MOLECULAR CLOUD; PHYSICAL-PROPERTIES; PRESTELLAR CORES; ACCRETION RATE; BOLOCAM SURVEY; CENTER REGION;

D O I：

10.1088/0067-0049/195/1/8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a catalog of compact sources derived from the QUaD Galactic Plane Survey. The survey covers similar to 800 deg(2) of the inner galaxy (vertical bar b vertical bar < 4 degrees) in Stokes I, Q, and U parameters at 100 and 150 GHz, with angular resolutions of 5 and 3.5 arcmin, respectively. Five hundred and twenty-six unique sources are identified in I, of which 239 are spatially matched between frequency bands, with 53 (234) detected at 100 (150) GHz alone; 170 sources are identified as ultracompact H II regions. Approximating the distribution of total intensity source fluxes as a power law, we find a slope of gamma(S, 100) = -1.8 +/- 0.4 at 100 GHz and gamma(S, 150) = -2.2 +/- 0.4 at 150 GHz. Similarly, the power-law index of the source two-point angular correlation function is gamma(theta, 100) = -1.21 +/- 0.04 and gamma(theta, 150) = -1.25 +/- 0.04. The total intensity spectral index distribution peaks at alpha(I) similar to 0.25, indicating that dust emission is not the only source of radiation produced by these objects between 100 and 150 GHz; free-free radiation is likely significant in the 100 GHz band. Four sources are detected in polarized intensity P, of which three have matching counterparts in I. Three of the polarized sources lie close to the Galactic center, Sagittarius A*, Sagittarius B2, and the Galactic Radio Arc, while the fourth is RCW 49, a bright H II region. An extended polarized source, undetected by the source extraction algorithm on account of its similar to 0 degrees.5 size, is identified visually, and is an isolated example of large-scale polarized emission oriented distinctly from the bulk Galactic dust polarization.

引用

页数：29

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