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Discovery of a Metal-poor, Luminous Post-AGB Star that Failed the Third Dredge-up

Kamath, Devika; van Winckel, Hans; Wood, Peter; Asplund, Martin; Karakas, Amanda; Lattanzio, John


Post-asymptotic giant branch (post-AGB) stars are known to be chemically diverse. In this paper we present the first observational evidence of a star that has failed the third dredge-up (TDU). J005252.87-722842.9 is an A-type (T eff = 8250 ± 250 K) luminous (8200 ± 700 L ⊙) metal-poor ([Fe/H] = −1.18 ± 0.10) low-mass (M initial ≈ 1.5–2.0 M ⊙) post-AGB star in the Small Magellanic Cloud. Through a systematic abundance study, using high-resolution optical spectra from UVES, we found that this...[Show more]

CollectionsANU Research Publications
Date published: 2017-02-06
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/836/1/15


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