Abstract:
High resolution spectral analysis of QY Sge, a post AGB star
is presented here. The spectrum of QY Sge is characterized by three major
components: absorption lines representative of a G supergiant, sharp emission
lines from resonance and low excitation transitions of abundant neutral atoms,
and broad emission lines of Na D and K lines at 7665 A and 7699 A. The star
is a velocity variable. The radial velocities of the star as measured from a set
of unblended absorption lines are estimated as '" -21 kms-1 for 1999 and '"
-23 kms-1 for 2000 spectrum. An abundance analysis shows that the star is
of approximately solar composition but with the highly condensable elements
(e.g, Sc and Ti), depleted by factors of 5 to 10.
