Herschel-SPIRE spectroscopy of the DR21 molecular cloud core
| Title | Herschel-SPIRE spectroscopy of the DR21 molecular cloud core |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | White, GJ, Abergel, A, Spencer, L, Schneider, N, Naylor, DA, Anderson, LD, Joblin, C, Ade, P, Andre, P, Arab, H, Baluteau, JP, Bernard, JP, Blagrave, K, Bontemps, S, Boulanger, F, Cohen, M, Compiegne, M, Cox, P, Dartois, E, Davis, G, Emery, R, Fulton, T, Gom, B, Griffin, M, Gry, C, Habart, E, Huang, M, Jones, S, Kirk, JM, Lagache, G, Leeks, S, Lim, T, Madden, S, Makiwa, G, Martin, P, Miville-Deschenes, MA, Molinari, S, Moseley, H, Motte, F, Okumura, K, Goncalves, DP, Polehampton, E, Rodet, T, Rodon, JA, Russeil, D, Saraceno, P, Sidher, S, Swinyard, BM, Ward-Thompson, D, Zavagno, A |
| Journal | Astronomy & Astrophysics |
| Volume | 518 |
| Date Published | Jul-Aug |
| ISBN Number | 0004-6361 |
| Accession Number | WOS:000281527200115 |
| Abstract | 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, (13)CO, HCO(+) and H(2)O, 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). |
