Chemistry and binarity in the early Universe: what is the role of metal-poor AGB stars?. Issue Volume 14:Issue S343(2019) (August 2018)

• Record Type: Journal Article
• Authors: Arentsen, Anke; Starkenburg, Else; Shetrone, Matthew D.; McConnachie, Alan W.; Venn, Kim A.; Depagne, Éric
• Editors: Kerschbaum, Franz; Groenewegen, Martin; Olofsson, Hans
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S343(2019)
• Page Start: 265
• Page End: 267
• Publication Date: 2018-08
• Subjects: stars: chemically peculiar, -- binaries: spectroscopic, -- stars: AGB and post-AGB, -- Galaxy: halo, -- galaxies: formation; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921318007512
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Carbon-enhanced metal-poor stars are probes of the early universe, that teach us about metal-poor AGB stars and supernovae physics in the very first stars. We find a large fraction of CEMP-no stars with large absolute carbon abundance to be in binary systems. This may be an indication of binary interaction with ultra or extremely metal-poor AGB stars, curiously without enhancement in s -process elements.