Spectroscopic observations of the rapid rotating post-AGB star IRAS 05381+1012

Details Spectroscopic observations of the rapid rotating post-AGB star IRAS 05381+1012 Spectroscopic observations of the rapid rotating post-AGB star IRAS 05381+1012

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006a%26a...452..571p&link_type=abstract

Astronomy and Astrophysics, Volume 452, Issue 2, June III 2006, pp.571-577

Astronomy and Astrophysics

Astrophysics

Stars: Agb And Post-Agb, Stars: Abundances

Scientific paper

We report on the high-resolution stellar parameters and abundance analysis of the rapidly rotating post-AGB star IRAS 05381+1012. Analysis of high-resolution spectra shows that IRAS 05381+1012 has an effective temperature of T_eff=5200± 100 K and a surface gravity of log g=1.0± 0.5 corresponding to a spectral type G(2-3)I. These parameters result in an estimated luminosity of 970 L&sun; and a distance of 2700 pc. We also show that IRAS 05381+1012 has a projected rotational velocity vsin i=40± 10 km s-1. The abundance analysis based on a few available lines reveals that this star is an iron-deficient object with [Fe/H]=-0.8. We also analyze the abundance pattern and compare it to other classes of stars with similar stellar parameters.

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