2007ApJ...656L..81N

Query : 2007ApJ...656L..81N

2007ApJ...656L..81N - Astrophys. J., 656, L81-L84 (2007/February-3)

The morphology of M17-UC1: a disk candidate surrounding a hypercompact H II region.

NIELBOCK M., CHINI R., HOFFMEISTER V.H., SCHEYDA C.M., STEINACKER J., NURNBERGER D. and SIEBENMORGEN R.

Abstract (from CDS):

We investigate the morphology and the evolutionary stage of the hypercompact H II region M17-UC1 using observations at infrared wavelengths and NIR radiative transfer modeling. For the first time, this region is resolved into two emission areas separated by a dark lane reminiscent of an obscuring silhouette caused by a circumstellar disk. So far, the observational data as well as model calculations suggest that M17-UC1 is surrounded by a disk of cool dust. This direct detection of a circumstellar disk candidate around a hypercompact H II region is in agreement with the expectations of the disk accretion model for high-mass star formation.

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Journal keyword(s): Stars: Circumstellar Matter - Galaxy: Open Clusters and Associations: General - Galaxy: Open Clusters and Associations: Individual: Messier Number: M17 - Stars: Formation - Stars: Pre-Main-Sequence

Simbad objects: 5

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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 - 2026 		#notes
1 [CW98] IRS 5 IR 18 20 24.6 -16 11 40           ~ 19 1
2 NAME M 17 UC1 HII 18 20 24.82 -16 11 34.9           ~ 57 1
3 2MASS J18202508-1611339 Y*O 18 20 25.0787858376 -16 11 33.926740656           ~ 8 0
4 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0
5 IRAS 20126+4104 Y*O 20 14 25.8816769656 +41 13 36.879427236           B2.5-B0.5 469 0

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