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Parallel sessions
Sessions
id
date time
2022-03-08 11:47:00
Bridging stellar interactions with galactic chemical evolution, nucleosynthesis and dust
Stellar2
Understanding the origin of the elements and the respective nucleosynthesis processes is key for studying the chemical evolution of galaxies and the Universe. Bridging the underlying physics in state-of-the-art stellar evolution models with nuclear networks is essential for constraining chemical tracers in galactic evolution and population synthesis models. In this era of large-scale surveys and technological development, our understanding of nuclear and stellar physics is advancing at the most opportune time, alongside key insights from observations of transients and low metallicity galaxies, as well as multi-dimensional models of stellar interiors. Understanding the effects of binary interactions from compact objects and gravitational-wave events will also have important implications for modelling chemical yields and dust formation. In galaxies, stars form, evolve, and die as supernovae and asymptotic giant branch stars, and eject elements into the interstellar medium. Evolution of stellar and gas-phase metallicities have been used to constrain the formation process of galaxies. The dust is also a repository of information on the evolution of metallicity in galaxies and of stellar evolution because many of the chemical elements condense into dust grains once they escape stellar interiors. The unprecedented near- and mid-IR coverage of the forthcoming JWST, with first data in mid-2022, will enable chemical compositions in galaxies to be probed to much higher redshifts and earlier cosmic times, but will also open a new window to studying the dust content of galaxies. A key goal of this session involves communication across neighbouring fields, where we bring together the nuclear microphysics with the large-scale effects on galaxy evolution and the chemical enrichment of the Universe. In addition to research talks, we aim to provide an opportunity for sharing detailed knowledge of input physics and code comparisons, while also connecting stellar models with nuclear reaction networks and post-processing tools. This would provide guidance for PhD students as well as deeper insight for all career stages. Related sessions have been hosted in 2015, 2016, 2017, 2019 and 2021 by the STFC-funded BRIDGCE network of universities in the United Kingdom (BRIdging the Disciplines of Galactic Chemical Evolution; website: www.bridgce.ac.uk), which develops synergies between UK researchers investigating the origin of the elements and the evolution of the stars and galaxies. This session is proposed to bring participants from a wider community such as from gravitational-waves and dust mineralogy, while also providing insights into modelling techniques of various codes and nuclear networks.
Erin Higgins, Chiaki Kobayashi, Robert Izzard, Andreea Font, Umberto Battino, Alison Laird, Alex Cameron, Janet Bowey
Fri. 09:00-10:30 / Fri. 14:30-16:00
09:00-09:20 Gavin Lotay: Nuclear Physics [invited]
09:20-09:30 Florence Concepcion: New laboratory atomic data for doubly-ionised iron for applications in astrophysics
09:30-09:40 Alexander David Hall-Smith: An investigation into the effect of updated reaction rates in post processing software
09:40-09:50 Janet Bowey (presenting), co-author Anne Hofmeister.: Sakurai’s Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9 ?m excess absorption is a carbonate
09:50-10:00 Holly Davies: ALMA Study of HCO+ and the Effect of Mixing in SN 1987A
10:00-10:10 Florian Kirchschlager: Supernova induced processing of interstellar dust: impact of ISM gas density, gas turbulence, and magnetic fields
10:10-10:20 Jennifer Friske: Chemical evolution in the Galactic nuclear disk
10:20-10:30 Benjamin Wehmeyer: Galactic Chemical Evolution with short lived radioisotopes
14:30-14:50 Elizabeth Stanway: The Impacts of Binary Stellar Evolution [invited]
14:50-15:00 Robert Izzard: Stars that merge, now and in the future
15:00-15:10 Arman Aryaeipour: Nucleosynthesis in Classical Nova Outbursts with White Dwarf Material Dredge-Up Using MESA
15:10-15:20 Conor Byrne: The Dependence of Theoretical Synthetic Spectra on alpha-enhancement in Young, Binary Stellar Populations
15:20-15:30 Robert Yates: Dust production and binary stellar yields in cosmological-scale galaxy evolution simulations
15:30-15:40 Fionntan Callan: New Multi Dimensional Deflagration Models for Type Iax Supernovae
15:40-15:50 Nina Sanches Sartorio: To PISN or not PISN... that is the question
15:50-16:00 Kasia Nowak: Self-enrichment in massive star clusters with supermassive stars