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




The slow ionized wind and rotating disklike system that are associated with the high-mass young stellar object G345.4938 01.4677 - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Resumen

We report the detection, made using ALMA, of the 92 GHz continuum and hydrogen recombination lines HRLsH40α, H42α, and H50β emission toward the ionized wind associated with the high-mass young stellar objectG345.4938+01.4677. This is the luminous central dominating source located in the massive and dense molecularclump associated with IRAS 16562−3959. The HRLs exhibit Voigt profiles, which is a strong signature of Starkbroadening. We successfully reproduce the observed continuum and HRLs simultaneously using a simple modelof a slow ionized wind in local thermodynamic equilibrium, with no need for a high-velocity component. TheLorentzian line wings imply electron densities of 5 × 107 cm−3 on average. In addition, we detect SO and SO2emission arising from a compact ∼3000 AU molecular core associated with the central young star. The molecularcore 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 associatedwith a slow photo-ionized wind.Nota general

Artículo de publicación ISI



Autor: Guzmán Fernández, Andrés; - Garay Brignardello, Guido; - Bronfman Aguiló, Leonardo; - Mardones Pérez, Diego; - Rodríguez, L

Fuente: http://repositorio.uchile.cl/



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