Areas of Research
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Research
Stellar Spectroscopy
Stellar Spectroscopy is a rich and diverse area of research at Western.
Our faculty members who are active in this field include:
Manganese emission lines in the spectra of two peculiar stars
Pictured, from top, are a spectrum of the B5 He-weak PGa star
3 Cen A, the theoretically predicted spectrum for 3 Cen A using
a Kurucz model atmosphere, as well as spectra of the B9 III
HgMn star 46 Aql and the B8 III HgMn star kappa Cnc.
The lines of multiplet 13 of Mn II are completely in emission
for 3 Cen A while weak emission may be seen in the spectrum
of 46 Aql. The usual absorption lines are shown in the spectrum
of kappa Cnc for comparison.
Observations taken with the Gecko coude spectrograph at the Canada-France-Hawaii Telescope.
(Sigut et al. 2000 ApJ 530 L89)
