SIMBAD references

T. Iijima, Astronomical Observatory of Padova, reports that spectra (range 360-740 nm), of variable star report on CBET 711 were taken with a Boller & Chivens grating spectrograph mounted on the 1.22-m telescope of the Asiago Astrophysical Observatory on Nov. 2.08 and 2.12 UT. The spectra show an extremely blue continuum superimposed by clear absorptions of the H I Balmer series. Also, H-alpha is in pure absorption. The absorption lines of Ca II H and K and Na I D are seen; meanwhile, no He I line is seen in absorption nor in emission. The continuum is still bluer than that of the O5-type star HD 217086, but the absorption features resemble an A-type star. This object may be a type of dwarf novae in outburst.