Abstract:
A detailed spectroscopic investigation of LR Sco which was
earlier misclassified as R CrB star is made. Atmospheric parameters and
elemental abundances are determined using detailed depth-dependent
model atmospheres and line synthesis technique. Most of the elements
show near solar abundances.
The strength of circumstellar components seen in Na D lines are used
to derive the mass loss rate. Another independent estimate of mass loss
rate is made using the observed infrared flux from 1–100μm. These two
approaches lead to nearly the same value of mass loss rate when Mv is
assumed to be – 4.5 for this star.
