Spectroscopic Monitoring of the Symbiotic Star BX Monocerotis

Low resolution optical spectra of the symbiotic star BX Monocerotis in the 3500--9000 Å range obtained during 1999--2010 are described. The spectrum of BX Mon at all phases is dominated by the cool component, with a red continuum and TiO absorption. Emission lines, predominantly due to H I, He I, He II, Fe II, Ca II and [O III] are seen superimposed on the spectrum of the M5 III star, with variable intensities. The observed variations in the spectra seem to be correlated with the orbital phases.