The production of about half of the heavy elements found in nature is assigned to a specific
astrophysical nucleosynthesis process: the rapid neutron-capture process (r process) …

What is the origin of the oxygen we breathe, the hydrogen and oxygen (in form of water
H2O) in rivers and oceans, the carbon in all organic compounds, the silicon in electronic …

To reach a deeper understanding of the origin of elements in the periodic table, we construct
Galactic chemical evolution (GCE) models for all stable elements from C (A= 12) to U (A …

Recent observations of GN-z11 with JWST/NIRSpec revealed numerous oxygen, carbon,
nitrogen, and helium emission lines at z= 10.6. Using the measured line fluxes, we derive …

Globular clusters (GCs) exhibit star-to-star variations in specific elements (eg, He, C, N, O,
Na, Al) that bear the hallmark of high-temperature H-burning. These abundance variations …

As low-and intermediate-mass stars reach the asymptotic giant branch (AGB), they have
developed into intriguing and complex objects that are major players in the cosmic gas/dust …

Abstract The SDSS-IV Apache Point Observatory Galactic Evolution Experiment (APOGEE)
survey has obtained high-resolution spectra for thousands of red giant stars distributed …

Abstract The Apache Point Observatory Galactic Evolution Experiment (APOGEE), one of the
programs in the Sloan Digital Sky Survey III (SDSS-III), has now completed its systematic …

We present a comprehensive study of the abundance evolution of the elements from H to U
in the Milky Way halo and local disc. We use a consistent chemical evolution model …

Context. The post-asymptotic giant branch (AGB) phase is arguably one of the least
understood phases of the evolution of low-and intermediate-mass stars. The two grids of …