48 citations · 49 across the 5 of their papers we have counts for
7 papers
A Data-Driven Model for -Process Production Patterns
Chen-Qi Li, Yong-Zhong Qian, Axel Gross +1
Using the elemental abundances in 68 metal-poor (MP) stars, we present a data-driven model for -process production patterns covering Sr to U. We show that essentially all the $r…
On the importance of the IGM/CGM enrichment in determining chemical abundances during the first 600 Myr
Annalisa Citro, Yong-Zhong Qian, Claudia Scarlata
JWST observations show that galaxies at exhibit a wide range of carbon-to-oxygen (C/O) ratios at fixed metallicity and systematically elevated nitrogen-to-oxygen (N/O) ratios…
Gamma-ray Signatures of r-Process Radioactivity from the Collapse of Magnetized White Dwarfs
Tetyana Pitik, Yong-Zhong Qian, David Radice +1
We predict the gamma-ray line emission from -process nuclei synthesized in the ejecta of the accretion-induced collapse (AIC) of a magnetized, rapidly rotating white dwarf. Usin…
A Data-Driven Model for Abundances in Metal-poor Stars and Implications for Nucleosynthetic Sources
Axel Gross, Zewei Xiong, Yong-Zhong Qian
We present a data-driven model for abundances of Fe, Sr, Ba, and Eu in metal-poor (MP) stars. The production patterns for core-collapse supernovae (CCSNe) and binary neutron star m…
Nucleosynthesis of an Supernova with 3D Simulation of the Inner Ejecta: Overall Yields and Implications for Short-Lived Radionuclides in the Early Solar System
Andre Sieverding, Bernhard Mueller, Yong-Zhong Qian
Based on a 3D supernova simulation of an progenitor model with initial solar composition, we study the nucleosynthesis using tracers covering the innermost $0.1\,M_…
Production of Mo and Ru isotopes in neutrino-driven winds: implications for solar abundances and presolar grains
Julia Bliss, Almudena Arcones, Yong-Zhong Qian
The origin of the so-called -isotopes and in the solar system remains a mystery as several astrophysical scenarios fail to account fo…