SIMBAD references

1997A&A...325..725C - Astronomy and Astrophysics, volume 325, 725-744 (1997/9-2)

The disk-outflow system around the high-mass (proto)star IRAS 20126+4104.


Abstract (from CDS):

We have used the Pico Veleta 30-m telescope and the Plateau de Bure interferometer to obtain maps of the molecular gas associated with IRAS 20126+4104 in 11 rotational transitions. We also present near infrared images of the same region taken with the TIRGO and NOT telescopes. A molecular clump centred on the H2O masers associated with the IRAS source is found. A molecular bipolar outflow is clearly evidenced by the interferometer maps in the HCO+(1-0) line, originating at the center of the clump; also, the images in the K-band continuum and in the H2 v=1->0 S(1) vibrational line trace the same bipolar structure seen in HCO+. A flattened structure elongated in the direction perpendicular to the outflow axis is seen in the CH3CN(5-4) line: we interpret this as a rotating disk with a very young massive early type star at its centre. We conclude that IRAS 20126+4104 represents a beautiful example of a disk-outflow system associated with an early type (proto)star, prior to the development of an ultracompact HII region.

Abstract Copyright:

Journal keyword(s): ISM: clouds - ISM: individual objects: IRAS 20126+4104 - ISM: molecules - radio lines: ISM

Nomenclature: Tables 13, 14: [CFT97] N=6+301

CDS comments: Tables 13 et 14: sources IR not in SIMBAD

Simbad objects: 2

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