SIMBAD references

1996A&A...313..657H - Astronomy and Astrophysics, volume 313, 657-663 (1996/9-2)

The excitation and abundance of HDO toward W3(OH)/(H2O).

HELMICH F.P., VAN DISHOECK E.F. and JANSEN D.J.

Abstract (from CDS):

The HDO 101-000 ground-state line at 464GHz has been detected toward the high-mass star-forming clumps W3(OH) and W3(H2O), together with the higher-lying 211-212 and 312-221 lines at 241 and 225GHz, respectively. A detailed analysis of the HDO excitation shows that the higher levels are most likely populated by intense far-infrared radiation due to warm dust. The data allow constraints on the dust temperature (Tdust>100K), total column of dust (E(B-V)>500mag) and HDO column density. Combined with H218O data recently obtained by Gensheimer et al., the deuteration of water is found to be lower than that of other species, [HDO]/[H2O]=(2-6)x10–4, but comparable to that found for other "hot cores".

Abstract Copyright:

Journal keyword(s): ISM: molecules - ISM: clouds - ISM: individual: W 3(OH) - W 3(H2O) - radio lines:ISM

Simbad objects: 2

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2019.12.07-04:40:05

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