The Open UniversitySkip to content

Herschel-SPIRE spectroscopy of the DR21 molecular cloud core

White, G. 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, 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, J. M.; Lagache, G.; Leeks, S.; Lim, T.; Madden, S.; Makiwa, G.; Martin, P.; Miville-Deschênes, M.-A.; Molinari, S.; Moseley, H.; Motte, F.; Okumura, K.; Pinheiro Gonçalves, D.; Polehampton, E.; Rodet, T.; Rodón, J. A.; Russeil, D.; Saraceno, P.; Sidher, S.; Swinyard, B. M.; Ward-Thompson, D. and Zavagno, A. (2010). Herschel-SPIRE spectroscopy of the DR21 molecular cloud core. Astronomy & Astrophysics, 518, article no. L114.

Full text available as:
[img] PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (452kB)
DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 μm, 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 ~ 7×104 cm-3, CO column density N(CO) ~ 3.5×1018 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) ~ 4.5×1021 cm-2.

Item Type: Journal Item
Copyright Holders: 2010 ESO
ISSN: 1432-0746
Keywords: lines and bands; infrared; molecules
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 25308
Depositing User: Ann McAloon
Date Deposited: 10 Dec 2010 10:47
Last Modified: 15 Dec 2018 10:01
Share this page:


Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU