The new outburst of the Be star w Ori
The Be star w Ori entered
in strong outburst. It apparently started in september. The Ha-line
is currently at 2 times the continuum in emission. The FeII lines are also in
emission and visible all around the spectrum. It is thus a very interesting
spectrum to take and a very interesting star to follow in the coming weeks and
months.
One can read Neiner et al. 2002 (A&A 388, p. 899) to know everything about the star, its pulsations and the long-term evolution of its emission. One can also read Neiner et al. 2003 (A&A 409, p. 275) to know everything about the rotation and magnetism of this star.
Coralie Neiner
Graphical form of
w Ori spectra for the date
15/11/2004 and 30/11/2004. Low evolution is noticed
at the resolution of R=16 000.
The measured Equivalent Width for the 30/11 observation
is 10.0 +/- 0.2 Ǻ,
very similar to the Ernst Pollmann evaluation (10.3
Ǻ).
Christian Buil
Ha-spectra by Ch. Buil and the VdS-spectroscopy group (Germany)
1. Spectra by Ch. Buil
Spectra by B. Stober
Spectra by L. Schanne
