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| Query : 1996A&A...313..657H |
1996A&A...313..657H - Astronomy and Astrophysics, volume 313657-663 (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
| Number of rows : 2 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | NAME W 3 OH | HII | 02 27 04.1 | +61 52 22 | ~ | 1064 | 2 | |||||
| 2 | W 3(H2O) | Mas | 02 27 04.6 | +61 52 25 | ~ | 154 | 0 |
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