Spitzer-IRS Sectroscopy of the Prototype Wolf-Rayet star EZ CMa (HD 50896)

P W Morris, P A Crowther, J R Houck

We present mid-infrared Spitzer-IRS spectroscopy of the prototype WN star EZ CMa (HD50896, WN4b). Numerous stellar wind lines of HeII are revealed, plus fine-structure lines of [Ne…