UV observations of LB 3193 and LB 3116 - Two hot post-AGB objects in the galactic halo?

Details UV observations of LB 3193 and LB 3116 - Two hot post-AGB objects in the galactic halo? UV observations of LB 3193 and LB 3116 - Two hot post-AGB objects in the galactic halo?

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260..261q&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 261-267.

Astronomy and Astrophysics

Astronomy

1

Asymptotic Giant Branch Stars, Galactic Halos, Hot Stars, Ultraviolet Astronomy, Stellar Evolution, Supergiant Stars

Scientific paper

LB 3193 and LB 3116 have visual spectra indicating that they are B2-B5 supergiants situated at large distances from the galactic plane. UV observations of both objects show that they are metal deficient stars, whose energy distributions match their adopted atmospheric parameters. Further investigation of mass luminosity relationships of various evolutionary phases suggest that they are more likely to be low mass stars of about 0.5-1.0 solar mass in a transitionary stage between the asymptotic giant branch and planetary nebulae phases. In turn this means that they are much closer to the galactic plane than first thought and hence are among the hottest post-AGB stars yet discovered.

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