%0 Journal Article
%T [S IV] in the NGC 5253 Supernebula: Ionized Gas Kinematics at High Resolution
%A Sara C. Beck
%A John H. Lacy
%A Jean L. Turner
%A Andrew Kruger
%A Matt Richter
%A Lucian P. Crosthwaite
%J Physics
%D 2012
%I arXiv
%R 10.1088/0004-637X/755/1/59
%X The nearby dwarf starburst galaxy NGC 5253 hosts a deeply embedded radio-infrared supernebula excited by thousands of O stars. We have observed this source in the 10.5{\mu}m line of S+3 at 3.8 kms-1 spectral and 1.4" spatial resolution, using the high resolution spectrometer TEXES on the IRTF. The line profile cannot be fit well by a single Gaussian. The best simple fit describes the gas with two Gaussians, one near the galactic velocity with FWHM 33.6 km s-1 and another of similiar strength and FWHM 94 km s-1 centered \sim20 km s-1 to the blue. This suggests a model for the supernebula in which gas flows towards us out of the molecular cloud, as in a "blister" or "champagne flow" or in the HII regions modelled by Zhu (2006).
%U http://arxiv.org/abs/1206.0863v1