Barium and related stars, and their white-dwarf companions. II. Main-sequence and subgiant stars
@article{Escorza2019BariumAR,
title={Barium and related stars, and their white-dwarf companions. II. Main-sequence and subgiant stars},
author={A. Escorza and D. Karinkuzhi and A. Jorissen and L. Siess and H. V. Winckel and D. Pourbaix and C. Johnston and B. Miszalski and G-M. Oomen and M. Abdul-Masih and H. Boffin and P. North and R. Manick and S. Shetye and J. Mikołajewska},
journal={Astronomy and Astrophysics},
year={2019}
}Barium (Ba) dwarfs and CH subgiants are the less-evolved analogues of Ba and CH giants. They are F- to G-type main-sequence stars polluted with heavy elements by a binary companion when the latter was on the Asymptotic Giant Branch (AGB). This companion is now a white dwarf that in most cases cannot be directly detected. We present a large systematic study of 60 objects classified as Ba dwarfs or CH subgiants. Combining radial-velocity measurements from HERMES and SALT high-resolution spectra… CONTINUE READING
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