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Query : 1999ApJ...514..899H |
1999ApJ...514..899H - Astrophys. J., 514, 899-908 (1999/April-1)
Ammonia absorption toward the ultracompact H II regions G45.12+0.13 and G45.47+0.05.
HOFNER P., PETERSON S. and CESARONI R.
Abstract (from CDS):
In the case of G45.47+0.05, we measure a deconvolved size of 1".5x0".8 for the region of 1.3 cm continuum emission. We detect extended emission in the NH3(2,2) line in the vicinity of the ionized gas. Compact absorption is detected in both the (2,2) and (4,4) line against the 1.3 cm continuum. The absorption line data indicate Trot=59 K and N(NH3)=1.8x1017 cm–2. The ammonia absorption occurs at a velocity redshifted by about 3.5 km.s–1 with respect to the emission. This supports the hypothesis of a remnant infalling molecular core onto the ultracompact H II region.
Abstract Copyright: ∼
Journal keyword(s): ISM: H II Regions - ISM: individual (G45.12+0.13, G45.47+0.05) - ISM: Molecules - Stars: Formation
Simbad objects: 5
Number of rows : 5 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 3C 286 | Sy1 | 13 31 08.2883506368 | +30 30 32.960091564 | 17.51 | 17.25 | ~ | 4341 | 2 | |||
2 | Caswell OH 045.12+00.13 | HII | 19 13 27.85 | +10 53 36.7 | ~ | 116 | 0 | |||||
3 | GAL 045.5+00.0 | HII | 19 14 20.8 | +11 09 04 | ~ | 139 | 0 | |||||
4 | CORNISH G045.4545+00.0591 | HII | 19 14 21.31 | +11 09 11.7 | ~ | 154 | 1 | |||||
5 | BWE 1923+2101 | Rad | 19 25 39 | +21 07.3 | ~ | 5 | 0 |
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