Short-lived Radionuclides in the Milky Way Galaxy
TL;DR: In this article , the authors have developed a Gaussian Chemical Evolution (GCE) model for short-lived radionuclides (SLRs) in the early solar system (ESS).
read more
Abstract: The short-lived radionuclides (SLRs) have a half-life ≤ 100 Myr. The γ-ray observations and excess abundance of their daughter nuclides in various meteoritic phases confirm the existence of SLRs in the Galaxy and early solar system (ESS), respectively. In this work, we have developed Galactic Chemical Evolution (GCE) models for SLRs, 26Al, and 60Fe along with 36Cl, 41Ca, and 53Mn. These models predict the temporal and spatial evolution of SLR abundance trends in the Galaxy from 2-18 kpc. The abundance of two SLRs, 26Al, and 60Fe, are investigated further, as their γ-ray observations are available for comparison with the model predictions. The predictions for the abundance per unit area for each ring show the decreases from the inner to outer regions of the Galaxy. The GCE predictions for the total mass of alive 26Al, and 60Fe in 2-18 kpc of the Galaxy at present time are 0.2 M⊙ and 0.08 M⊙, respectively.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
References
The Evolution and Explosion of Massive Stars. II. Explosive Hydrodynamics and Nucleosynthesis
S. E. Woosley,Thomas A. Weaver +1 more
TL;DR: In this paper, the nucleosynthetic yield of isotopes lighter than A = 66 (zinc) is determined for a grid of stellar masses and metallicities including stars of 11, 12, 13, 15, 18, 19, 20, 22, 25, 30, 35, and 40 M{sub {circle_dot}} and metals Z = 0, 10{sup {minus}4}, 0.01, 0.1, and 1 times solar (a slightly reduced mass grid is employed for non-solar metallicities).
•Journal Article
Progress in particle and nuclear physics
TL;DR: In particular, the role of mesons, isobars and quarks in nuclear structure and the use of complex nuclei for probing fundamental symmetries is discussed in this paper.
1.3K
The Chemical Evolution of the Galaxy: The Two-Infall Model
TL;DR: In this article, a new chemical evolution model for the Galaxy that assumes two main infall episodes, for the formation of the halo-thick disk and thin disk, respectively, is presented.
991
Updated stellar yields from asymptotic giant branch models
TL;DR: In this paper, an updated grid of stellar yields for low- to intermediate-mass thermally pulsing asymptotic giant branch (AGB) stars is presented, along with a finer mass grid than used in previous studies.
709
•Journal Article
A New Picture for the Chemical Evolution of the Galaxy: the Two Infall Model
TL;DR: In this paper, a chemical evolution model for the Galaxy is presented, which assumes that the evolution of the halo and thick disk is completely disentangled from the thin disk.
626