SIMBAD references

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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2020.01.21-12:05:46

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