SIMBAD references

2014ApJ...796..117G - Astrophys. J., 796, 117 (2014/December-1)

The slow ionized wind and rotating disklike system that are associated with the high-mass young stellar object G345.4938+01.4677.

GUZMAN A.E., GARAY G., RODRIGUEZ L.F., MORAN J., BROOKS K.J., BRONFMAN L., NYMAN L.-A., SANHUEZA P. and MARDONES D.

Abstract (from CDS):

We report the detection, made using ALMA, of the 92 GHz continuum and hydrogen recombination lines (HRLs) H40α, H42α, and H50β emission toward the ionized wind associated with the high-mass young stellar object G345.4938+01.4677. This is the luminous central dominating source located in the massive and dense molecular clump associated with IRAS 16562-3959. The HRLs exhibit Voigt profiles, which is a strong signature of Stark broadening. We successfully reproduce the observed continuum and HRLs simultaneously using a simple model of a slow ionized wind in local thermodynamic equilibrium, with no need for a high-velocity component. The Lorentzian line wings imply electron densities of 5x107/cm3 on average. In addition, we detect SO and SO2 emission arising from a compact (∼3000 AU) molecular core associated with the central young star. The molecular core exhibits a velocity gradient that is perpendicular to the jet-axis, which we interpret as evidence of rotation. The set of observations toward G345.4938+01.4677 are consistent with it being a young high-mass star associated with a slow photo-ionized wind.

Abstract Copyright:

Journal keyword(s): ISM: individual: IRAS 16562-3959 - ISM: jets and outflows - stars: formation - stars: individual: G345.4938+01.4677 - stars: jets

Nomenclature: Fig. 1, Table 2: [GGR2014] NN (Nos 1-18).

Simbad objects: 36

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