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Parallel sessions
Sessions
id
date time
2022-03-08 11:48:00
The lives and deaths of massive stars
Stellar3
Massive stars and their resultant explosive deaths as transients have had a profound impact on the chemical and dynamical history of the Universe. The 21st century continues to furnish us with new and unexpected types of explosive transients on the night sky, and these discoveries are forcing us beyond the classical paradigm of solely radioactively powered supernovae to explain the full gamut of massive stellar deaths. With these new discoveries come equal challenges to understand their explosion mechanisms, and the progenitors that produce them. In this session we aim to bring together experts on massive star evolution and transients to discuss recent findings that can shed light on the mapping between progenitor stars and their supernovae, and on rare evolutionary pathways that are producing new classes of transients. Our focus will be on giving a platform for early-career researchers to present their work in these fields. Topics, covering theory and observation, will include:
- The nucleosynthesis and mass-loss mechanisms of massive stars' in particular, the underlying cause and impact of 'bursty' or enhanced mass loss.
- The production of dense circum-stellar media around massive stars, and their impact on resultant explosive transients.
- The formation of nascent central engines and magnetars in massive stellar-collapse and how they can power some of the most energetic transients such as gamma-ray bursts and superluminous supernovae.
- Population synthesis of massive stellar evolution and the rates of transient classes.
- Studies of explosive transients linked to the deaths of massive stars and their progenitors.
- The environmental impacts of both massive stars and transients via their ionising radiation, stellar winds, and kinetic energy.
- Studies of the compact remnants left behind by massive stellar explosions.
Joe Lyman, Deanne Coppejans, Matt Nicholl, David O'Neill, Justyn Maund, Ben Davies, Joanne Pledger
Mon. 09:00-10:30 / Tues 14:30-16:00
09.00-09.05 Joe Lyman: Introduction
09.05-09.30 Ning-Chen Sun: Towards a better understanding of supernova environments
09.30-09.44 Conor Ransome: The largest H-alpha survey of the host galaxies of nearby (z<0.02) type IIn supernovae
09.44-09.58 Daniel Perley: Fast transients, failed explosions, and the fates of Wolf-Rayet stars
09.58-10.12 Robert Byrne: Nothing to see here: Failed supernovae are faint or rare
10.12-10.26 Seán Brennan: Is it alive? Late time HST observation of the SN2009ip-like transient, AT2016jbu
14.30-14.44 Thomas Killestein: Probing the circumstellar environments of supernovae with high-cadence photometry
14.44-14.58 Aysha Aamer: SN2019szu: A long-lived superluminous SN with premature nebular emission
14.58-15.12 Sarah McDonald: Red Supergiants in M31: The Humphreys-Davidson limit at high metallicity
15.12-15.26 Gautham Narayana Sabhahit: Mass-loss implementation and temperature evolution of very massive stars
15.26-15.40 Pornisara Nuchvanichakul: Gaia Early Data Release 3 peculiar velocity distribution of Galactic high-mass x-ray binaries
15.40-15.54 Ashley Chrimes: New insights into the Galactic magnetar population