Expansion of W3(oh)


A direct measurement of the expansion of W3(OH) is made by comparing Very Large Array images taken D10 yr apart. The expansion is anisotropic with a typical speed of 3È5 km s~1, indicating a dynamical age of only 2300 yr. These observations are inconsistent with either the freely expanding shell model or a simple bow shock model. The most favored model is a… (More)


10 Figures and Tables

Slides referencing similar topics