HD-105262 - A HIGH-LATITUDE METAL-POOR POST-AGB - A SUPERGIANT WITH LARGE PROPER MOTION

The large proper motion post-AGB supergiant stars are very rare. HD 10 5262 is a high galactic latitude (+72 degrees) A-type star with large proper motion (0''.057 year(-1)) and high c1-index. Earlier, it was cl assified as a Field Horizontal Branch (FHB) star. Recently, Abt (1993) suggested that it may be a star similar to HR 4049. From an analysis of the spectra the chemical composition of HD 105262 has been determin ed. The elemental abundances are found to be, [Fe/H]= -2.2, [C/H] -0.1 , [N/H]= -0.2, [O/H]= -0.5, [alpha/H]= -1.6. The C/O= 1.2 shows that H D 105262 is a carbon rich star. The chemical composition of HD 105262 indicates that it has gone through the AGB nucleosynthesis. The chemic al composition, absolute magnitude, high galactic latitude and kinemat ics indicate that HD 105262 is a halo metal-poor post-AGB A supergiant . It is not a FHB star.