The HI fine structure of HVC187 near NGC3783, gas in the leading bridge of the Magellanic System

Abstract

We present an analysis of high-resolution HI data of one of the cores of HVC187 Wakker & van Woerden 1991), HVC287+22+240. Structure is present down to the lowest-measurable scale (~1 arcmin) and several concentrations appear to be unresolved. Most of the cores seen at low resolution break up into smaller subcores at higher resolution. The typical volume density and pressure are estimated to be ~30/R/D(kpc) cm^{-3} and ~18000/R/D(kpc) K cm^{-3}, respectively, where R is the resolution in arcmin and D(kpc) the unknown distance in kpc.

5 pages; LaTeX; to be published in: Proceedings of the 3rd Stromlo Symposium, eds. B.K. Gibson, T.S. Axelrod and M.E. Putman (ASP Conf. Ser.)