2010A&A...518L.114W

Query : 2010A&A...518L.114W

2010A&A...518L.114W - Astronomy and Astrophysics, volume 518, L114-114 (2010/7-2)

Herschel-SPIRE spectroscopy of the DR 21 molecular cloud core.

WHITE G.J., ABERGEL A., SPENCER L., SCHNEIDER N., NAYLOR D.A., ANDERSON L.D., JOBLIN C., ADE P., ANDRE 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-DESCHENES M.-A., MOLINARI S., MOSELEY H., MOTTE F., OKUMURA K., PINHEIRO GONCALVES D., POLEHAMPTON E., RODET T., RODON J.A., RUSSEIL D., SARACENO P., SIDHER S., SWINYARD B.M., WARD-THOMPSON D. and ZAVAGNO A.

Abstract (from CDS):

We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671µm, 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 T_kin ∼125 K and n_H2∼7x10⁴cm^–3, CO column density N(CO) ∼3.5x10¹⁸cm^–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 ∼78K and N(CO) ∼4.5x10²¹cm^–2.

Abstract Copyright: ∼

Journal keyword(s): ISM: lines and bands - infrared: ISM - ISM: molecules

Simbad objects: 4

Full paper

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Number of rows : 4

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2022	#notes
1	NAME Cyg X	Cld	20 28 41	+41 10.2	~	712	1
2	[CGC93] FIR 1	IR	20 39 00.37	+42 24 36.6	~	24	0
3	[MBS2007c] CygX-N44	Rad	20 39 01.01	+42 22 50.2	~	381	0
4	GRS G081.70 +00.50	SFR	20 39 01.6	+42 19 38	O4.5	1001	0

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