Understanding the Enrichment of Heavy Elements by the Chemodynamical Evolution Models of Dwarf Galaxies

Yutaka Hirai (Autor)

Buch | Hardcover

135 Seiten

2019 | 1st ed. 2019
Springer Verlag, Singapore
978-981-13-7883-6 (ISBN)

Artikel merken

This book addresses the mechanism of enrichment of heavy elements in galaxies, a long standing problem in astronomy. It mainly focuses on explaining the origin of heavy elements by performing state-of-the-art, high-resolution hydrodynamic simulations of dwarf galaxies. In this book, the author successfully develops a model of galactic chemodynamical evolution by means of which the neutron star mergers can be used to explain the observed abundance pattern of the heavy elements synthesized by the rapid neutron capture process, such as europium, gold, and uranium in the Local Group dwarf galaxies. The book argues that heavy elements are significant indicators of the evolutionary history of the early galaxies, and presents theoretical findings that open new avenues to understanding the formation and evolution of galaxies based on the abundance of heavy elements in metal-poor stars.

Yutaka Hirai is a special postdoctoral researcher (SPDR) at the RIKEN Center for Computational Science. He has participated in studies of galactic chemical and dynamical evolution using high-resolution hydrodynamic simulations. His research has mainly focused on enrichment of heavy elements from neutron star mergers and supernovae in Local Group galaxies. He received his B.Sc. in Physics from Waseda University in 2013, M.Sc. in Astronomy in 2015, and Ph.D. in Astronomy in 2018 from the University of Tokyo. He was awarded a Research Fellow by Japan Society for the Promotion of Science (JSPS) from April 2015 to March 2018.

Introduction.- Enrichment of r-Process Elements in Dwarf Spheroidal Galaxies in the Chemodynamical Evolution Models.- Early Chemodynamical Evolution of Dwarf Galaxies Deduced from r-Process Elements.- Enrichment of Zinc in Dwarf Galaxies.- Eﬃciency of Metal Mixing in Dwarf Galaxies.- Enrichment of r-Process Elements in a Cosmological Context.- Conclusions and Future Prospects.

Erscheinungsdatum	10.06.2019
Reihe/Serie	Springer Theses
Zusatzinfo	66 Illustrations, color; 4 Illustrations, black and white; XV, 135 p. 70 illus., 66 illus. in color.
Verlagsort	Singapore
Sprache	englisch
Maße	155 x 235 mm
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Astronomie / Astrophysik
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Relativitätstheorie
Schlagworte	Dwarf Galaxy of the Local Group • Electron Capture Supernovae • Formation of the Milky Way Halo • Galactic Chemical Evolution • Heavy Element Synthesis in Galaxy • Neutron Star Mergers • Numerical Simulations of Galaxy Formation • Origin of Elements in the Universe • Rapid Neutron Capture Process
ISBN-10	981-13-7883-5 / 9811378835
ISBN-13	978-981-13-7883-6 / 9789811378836
Zustand	Neuware