The red high resolution spectrum of HR 8752 was taken on request of the
late Professor Jan Smolinski.
HR 8752 (HD 217476, G0Ia+) is the most luminous star of intermediate
spectral type in our Galaxy.
The star is known for several peculiarities, such as the intense
radio emission, and the presence of the red [N II] emission lines,
and of H
emission with complex and variable profile
(e.g. Smolinski et al. 1994; Sheffer & Lambert 1992).
The spectrum plotted in Fig. 1 (click here) shows two broad flat-topped
emissions of the
red [N II] doublet. The edges of the 654.8 nm line are blended with
photospheric absorptions making the measurements uncertain.
The 
of the 658.4 nm is larger than expected from the extrapolation of
the long term behaviour during 1976-1992 found by Sheffer & Lambert (1992).
The profile of H is similar to that of October 1992
(Smolinski et al. 1994, "type A'' profile according to their designation),
with four emission maxima separated by three narrow absorptions.