2007ApJ...658L..45L

Query : 2007ApJ...658L..45L

2007ApJ...658L..45L - Astrophys. J., 658, L45-L49 (2007/March-3)

W51 IRS 2: a massive jet emerging from a molecular cloud into an H II region.

LACY J.H., JAFFE D.T., ZHU Q., RICHTER M.J., BITNER M.A., GREATHOUSE T.K., VOLK K., GEBALLE T.R. and MEHRINGER D.M.

Abstract (from CDS):

We have mapped [Ne II] (12.8 µm) and [S IV] (10.5 µm) emission from W51 IRS 2 with TEXES on Gemini North, and we compare these data to VLA free-free observations and VLT near-infrared images. With 0.5" spatial and 4 km/s spectral resolution, we are able to separate the ionized gas into several components: an extended H II region on the front surface of the molecular cloud, several embedded compact H II regions, and a streamer of high-velocity gas. We interpret the high-velocity streamer as a precessing or fanlike jet, which has emerged from the molecular cloud into an OB star cluster where it is being ionized.

Abstract Copyright: ∼

Journal keyword(s): ISM: H II Regions - Infrared: ISM - ISM: Jets and Outflows

Nomenclature: Fig.2, text: [LJZ2007] IRS 2a (Nos 2a-2f, 2i, 2m).

Simbad objects: 12

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Number of rows : 12
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 Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
2 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
3 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
4 NAME HH 80-81 HH 18 19 06 -20 51.4           ~ 236 0
5 W 51a HII 19 23 29.3 +14 31 38           ~ 186 0
6 OKYM W51 IRS 2 6 IR 19 23 39.816 +14 31 05.07           ~ 29 0
7 [WBN74] W 51 IRS 2 SFR 19 23 39.93 +14 31 09.4           ~ 321 0
8 NAME W 51 North Rad 19 23 40.0 +14 30 51           ~ 169 0
9 NAME W 51 IRS 1 HII 19 23 41.9 +14 30 36           ~ 124 0
10 GAL 049.5-00.4 MoC 19 23 44 +14 30.7           ~ 27 0
11 W 51 SNR 19 23 50 +14 06.0           ~ 1352 1
12 W 51d1 Rad ~ ~           ~ 14 0

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