Herschel-SPIRE spectroscopy of the DR21 molecular cloud core
- White, Glenn J.
- Abergel, A.
- Spencer, L.
- Schneider, N.
- Naylor, D. A.
- Anderson, L. D.
- Joblin, C.
- Ade, P.
- André, P.
- Arab, H.
- Baluteau, J. -P.
- Bernard, J. -P.
- Blagrave, K.
- Bontemps, Sylvain
- 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, J. M.
- Lagache, Guilaine
- Leeks, S.
- Lim, T.
- Madden, S.
- Makiwa, G.
- Martin, P.
- Miville-Deschênes, M. -A.
- Molinari, S.
- Moseley, H.
- Motte, F.
- Okumura, K.
- Gocalvez, D. Pinheiro
- Polehampton, E.
- Rodet, T.
- Rodón, J. A.
- Russeil, D.
- Saraceno, P.
- Sidher, S.
- Swinyard, B. M.
- Ward-Thompson, D.
- Zavagno, Annie
DOIAbstract
5 pages, 6 figuresInternational audienceWe present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 microns, using the Herschel-SPIRE spectrometer. Nineteen molecular lines originating from CO, 13CO, 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 Tkin ~ 125 K and nH2 ~ 7 x 10^4 cm-3, CO column density N(CO) ~ 3.5 x 10^18 cm^-2 and a filling factor of ~ 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 ~ 78 K and N(CO) ~ 4.5 x 10...
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