Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001assl..265...45f&link_type=abstract
Post-AGB Objects as a Phase of Stellar Evolution, Proceedings of the Toruń Workshop held July 5-7, 2000. Edited by R. Szczerba a
Astronomy and Astrophysics
Astrophysics
2
Scientific paper
Post-AGB stars are generally believed to be on their way to the planetary nebula stage. However, there has been a question about the evolutionary path for the low-mass ones. We present BVRIJHK photometry of post-AGB candidates selected on their IRAS colors. Their spectral energy distributions showed that 16 out of 27 objects were very likely to be the post-AGB stars. Two objects were remarkable in that their central stars were of rather late spectral type while their dynamical ages of their detached dust shell were considerably older than the others. We believe they are low mass post-AGB stars dispersing their dust shells which will not become planetary nebula but will directly evolve to white dwarfs.
Fujii Takahiro
Nakada Yoshikazu
Parthasarathy Mudumba
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