Near IR Spectroscopic monitoring of WR 140 during the 2001 periastron passage

We present new spectra of WR 140 (HD 193793) in the JHK bands with some covering the 1.083-μm He i emission line at higher resolution, observed between 2000 October and 2003 May to cover its 2001 periastron passage and maximum collidingwind activity. The WC7 + O4-5 spectroscopic binary WR 140 is the prototype of colliding-wind, episodic dust-making Wolf… CONTINUE READING