Spectral classification and HR diagram for symbiotic stars in the galactic bulge

G. A. Medina Tanco, J. E. Steiner

A sample of 45 symbiotic stars observed in the direction of the galactic bulge are classified in spectral type using TiO $\lambda \lambda 6180,7100\mathring{A}$ and VO $\lambda \lambda 7865\mathring{A}$ absorption feature indic…