Nuclei in the Cosmos (NIC XVII)

Session

Stellar modelling

21 Sept 2023, 13:30

184. The Dawn of 3D Stellar Evolution and Nucleosynthesis

Prof. Raphael HIRSCHI (Keele University)

21/09/2023, 13:30

Stellar modelling

Invited

Stars play a key role in the Cosmos through the light they shine, the chemical elements they produce and the kinetic energy they inject into their surroundings via winds and supernova explosions. For many decades, our understanding of the structure, evolution and fate of stars has greatly benefitted from comparing spherically symmetric, one-dimensional (1D) theoretical models to a variety of...

192. Evolution of accreting white dwarfs in close binary systems including the effects of rotation and magnetic fields and implications for Type Ia supernovae

Sung-Chul YOON (Seoul National University)

21/09/2023, 14:00

Stellar modelling

Invited

Accreting white dwarfs in interacting binary systems are closely related to explosive events like novae and Type Ia supernovae, which play an important role in the chemical evolution of the universe. Although numerous studies on the evolution of accreting white dwarfs have been presented in the literature, there has been a relatively limited focus on exploring the impact of rotation and...

32. On the bridge: Asteroseismology meets nuclear astrophysics in massive stars

Hannah BRINKMAN (Institute of Astronomy, KU Leuven)

21/09/2023, 14:30

Stellar modelling

Oral

Massive stars (10 solar masses and up) play an important role in the synthesis of new elements in the Universe. They enrich the interstellar medium with these newly synthesized isotopes via their stellar winds and via their final supernova explosions. To understand the nuclear yields of these stars, especially before the supernova explosion, there are three key ingredients; the nuclear...

45. Nucleosynthesis and stellar evolution in 3D hydrodynamic simulations

Federico RIZZUTI (Keele University)

21/09/2023, 14:45

Stellar modelling

Oral

Our knowledge of stellar evolution is limited by uncertainties coming from complex multi-dimensional processes in stellar interiors, usually reproduced in 1D stellar models with simplifying prescriptions. 3D hydrodynamic models can improve these prescriptions by studying realistic multi-D processes, usually for a short timerange (minutes or hours). Recent advances in computing resources are...

39. The Impact of Binary Evolution on Stellar Nucleosynthesis

Zara OSBORN (Monash University)

21/09/2023, 15:00

Stellar modelling

Oral

Almost all of the nuclei in the cosmos originate from stars. Low-mass (~1-8M⊙) stars are thought to synthesise a large fraction of the universe’s carbon, nitrogen, and fluorine, and about half of all elements heavier than iron making them an important ingredient in galactic chemical evolution (GCE) models. Low mass stars synthesise material through a variety of nuclear processes such as...