We have carried out a new analysis of the very metal-poor CH/CN strong stars CS 22948-27
and CS 29497-34. In particular, the effective temperatures were recomputed by comparing …

High-resolution spectra at λらむだ4260 have been obtained for 40 stars of type MS or S to search
for the presence of Tc I. In addition, previously published Tc surveys provide an additional …

The barium stars are Population I GK giants that have enhanced abundances of carbon and
s-process elements, and are probably related in their peculiarities to several other carbon …

Forty-eight blue straggler stars have been discovered in NGC 5466, the only Galactic
globular cluster known to contain an anomalous Cepheid of the sort found in dwarf galaxies …

Spectral classification, barium intensity, radial velocity, luminosity, and kinematical
properties are determined for 389 barium stars by analyzing image-tube spectra and …

Context. A complete set of orbital parameters for barium stars, including the longest orbits,
has recently been obtained thanks to a radial-velocity monitoring with the HERMES …

The high-velocity, neutral hydrogen feature known as MI may be the result of a supernova
that took place about 100,000 yr ago at a distance of 163 pc. Low-velocity H i data show a …

We examine the composition of barium stars in the context of mass transfer from an
asymptotic giant branch (AGB) companion. We accrete between 0.01 and 0.5 M⊙ of AGB …

Theoretical predictions of the population of Galactic symbiotic stars (SySts) are highly
inconsistent with the current known population. Despite intense effort over the past decades …

Stellar models predict that lithium (Li) inside a star is destroyed during the first dredge-up
phase, yet 1.2% of red giant stars are Li-rich. We aim to uncover possible origins of this …