Herschel-SPIRE spectroscopy of the DR21 molecular cloud core

被引：14

作者：

White, G. J. ^{[1
,2
]}

Abergel, A. ^{[4
]}

Spencer, L. ^{[3
]}

Schneider, N. ^{[5
]}

Naylor, D. A. ^{[3
]}

Anderson, L. D. ^{[8
]}

Joblin, C. ^{[15
,16
]}

Ade, P. ^{[7
]}

Andre, P. ^{[5
]}

Arab, H. ^{[4
]}

Baluteau, J. -P. ^{[8
]}

Bernard, J. -P. ^{[15
,16
]}

Blagrave, K. ^{[9
]}

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

Boulanger, F. ^{[4
]}

Cohen, M. ^{[10
]}

Compiegne, M. ^{[9
]}

Cox, P. ^{[11
]}

Dartois, E. ^{[4
]}

Davis, G. ^{[12
]}

Emery, R. ^{[2
]}

Fulton, T. ^{[4
]}

Gom, B. ^{[4
]}

Griffin, M. ^{[7
]}

Gry, C. ^{[8
]}

Habart, E. ^{[4
]}

Huang, M. ^{[13
]}

Jones, S. ^{[3
]}

Kirk, J. M. ^{[7
]}

Lagache, G. ^{[4
]}

Leeks, S. ^{[2
]}

Lim, T. ^{[2
]}

Madden, S. ^{[5
]}

Makiwa, G. ^{[3
]}

Martin, P. ^{[9
]}

Miville-Deschenes, M. -A. ^{[4
]}

Molinari, S. ^{[1
,13
]}

Moseley, H.

Motte, F. ^{[5
]}

Okumura, K. ^{[5
]}

Goncalves, D. Pinheiro ^{[9
]}

Polehampton, E. ^{[2
,4
]}

Rodet, T. ^{[14
]}

Rodon, J. A. ^{[8
]}

Russeil, D. ^{[8
]}

Saraceno, P. ^{[13
]}

Sidher, S. ^{[2
]}

Swinyard, B. M. ^{[2
]}

Ward-Thompson, D. ^{[7
]}

Zavagno, A. ^{[8
]}

机构：

[1] Open Univ, Dept Phys & Astron, Milton Keynes, Bucks, England

[2] Rutherford Appleton Lab, Dept Space Sci, Chilton, England

[3] Univ Lethbridge, Inst Space Imaging Sci, Lethbridge, AB T1K 3M4, Canada

[4] Univ Paris 11, CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France

[5] Univ Paris Diderot, CNRS INSU, Lab AIM, CEA IRFU,CEA Saclay, F-91191 Gif Sur Yvette, France

[6] CEA, Lab AIM, Irfu SAp, F-91191 Gif Sur Yvette, France

[7] Cardiff Univ, Dept Phys & Astron, Cardiff, S Glam, Wales

[8] CNRS, UMR6110, Lab Astrophys Marseille, F-13388 Marseille, France

[9] Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada

[10] Univ Calif Berkeley, Radio Astron Lab, Berkeley, CA 94720 USA

[11] IRAM, F-38406 St Martin Dheres, France

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

[13] INAF, Ist Fis Spazio Interplanetario, I-00133 Rome, Italy

[14] Univ Paris 11, CNRS Supelec, Lab Signaux & Syst, F-91192 Gif Sur Yvette, France

[15] Univ Toulouse, UPS, CESR, F-31028 Toulouse 4, France

[16] CNRS, UMR5187, F-31028 Toulouse, France

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 518卷

关键词：

ISM: lines and bands; infrared: ISM; ISM: molecules; REGION; EMISSION; DR-21; MAPS; 1ST;

D O I：

10.1051/0004-6361/201014622

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 mu m, using the Herschel-SPIRE spectrometer. Nineteen molecular lines originating from CO, (CO)-C-13, HCO+ and H2O, plus lines of [N II] and [CI] were recorded, including several transitions not previously detected. The CO lines are excited in warm gas with T-kin similar to 125 K and n(H2) similar to 7x10(4) cm(-3), CO column density N(CO) similar to 3.5x10(18) cm(-2) and a filling factor of similar to 12%, and appear to trace gas associated with an outflow. The rotational temperature analysis incorporating observations from ground-based telescopes reveals an additional lower excitation CO compoment which has a temperature similar to 78 K and N(CO) similar to 4.5x10(21) cm(-2).

引用

页数：5

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