SIMBAD references

T. Iijima, Osservatorio Astrofisico, Asiago, writes that high- dispersion spectra (resolution 16000; range 420-680 nm) of RS Oph were taken with an echelle spectrograph mounted on the 1.82-m reflector at the Mt. Ekar station of the Astronomical Observatory of Padova on Feb. 18.2 and 19.2 UT. The spectra show broad emission lines of H I, He I, Fe II multiplets 27, 37, 38, 42, 43, 48, 49, and 74, and some Ti II lines. The emission lines of He II were not yet detected. The FWHM of H I and He I lines are about 1800 km/s, and those of the Fe II lines are roughly 800 km/s. Very narrow emission components, whose widths are comparable to the resolution limit of the spectrograph, are seen on the top of the broad emission components. The narrow components are very weak for H I and He I lines, while their heights are larger than those of the broad components for several Fe II lines. The line of [N II] 575.5-nm shows only the narrow component.