News and Events
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Heavy Puzzle Pieces: Nucleosynthesis Models of the Intermediate Neutron-capture Process
Wednesday July 22nd 2020 @12pm, Zoom Colloquium Melanie Hampel Monash University Email: melanie.hampel@monash.edu Abstract The quest for the origin of the elements in the universe combines different fields of physics and astronomy, from the smallest scales of nuclear reactions to large scales of giant stars. To understand the chemical history of our universe the abundances of elements heavier than iron are observed …
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Observational consequences of binary neutron star merger remnants
Wednesday June 17th 2020 @12pm, Zoom Colloquium Nikhil Sarin Monash University Email: nikhil.sarin@monash.edu Abstract The first neutron star merger observed with gravitational waves and in electromagnetic radiation confirmed that binary neutron star mergers are the progenitors of at least some short gamma-ray bursts. The multi-messenger observations have been used to a probe a lot of fundamental physics, however, despite the wealth of …
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Cosmological tests using galaxy-galaxy lensing and clustering amplitudes in KiDS-1000
Wednesday May 6th 2020 @12pm, Zoom Colloquium Prof. Chris Blake Swinburne University Email: cblake@swin.edu.au Abstract The physics of gravity on cosmological scales affects both the rate of assembly of galaxy large-scale structure, and the gravitational lensing of background light through this cosmic web. By comparing the amplitude of these different observational signatures, we can construct tests that can distinguish General Relativity from …
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The imprint of their explosions: Using supernova remnants to understand stellar death
(postponed due to Covid-19 pandemic social distancing measures) , level 7 Conference Room, David Caro Building Dr Katie Auchettl The University of Melbourne Email: katie.auchettl@unimelb.edu.au Abstract One of the most uncertain aspects related to our understanding of the end points of stellar evolution is the link between the progenitor star and the nature of the supernova explosion that the progenitor will undergo. …
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Full of Orions? dissecting extreme, dusty starbursts on (k)pc-scales
Wed 11th March 2020 @2:15 PM, level 7 Conference Room, David Caro Building Dr Matus Rybak Leiden University Email: mrybak@strw.leidenuniv.nl Abstract Sub-millimeter galaxies (SMGs) play a key role in the early Universe and are an important laboratory for understanding the most extreme star formation. However, our understanding of SMGs -- what drives their intense star-formation? what are the physical properties of their …
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Morphological transformations in the local Universe: an observational and theoretical perspective
Wed 4th March 2020 @12:00 PM, level 7 Conference Room, David Caro Building Dr Camila Correa University of Amsterdam Email: camila.correa@uva.nl Abstract In this talk I will summarise recent results of the dependence of the galaxy stellar-to-halo mass relation on galaxy morphology. We use data from the Sloan Digital Sky Survey DR7 with morphological classifications from Galaxy Zoo, and also compare with …
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Population synthesis of massive stellar binaries and predictions for the formation of (binary) black holes
Wed 26th Feb 2020 @12:00 PM, level 7 Conference Room, David Caro Building Coen Neijssel University of Birmingham Email: cneijssel@star.sr.bham.ac.uk Abstract Population synthesis codes enable us to simulate large populations of massive stars to compare to different types of observations. In this talk I will focus on the predictions for black hole masses both in high mass X-ray binaries and gravitational wave …
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The origin and fate of the discs of spiral galaxies from numerical simulations
Wed 19th Feb 2020 @12:00 PM, level 7 Conference Room, David Caro Building Prof. Sukyoung Yi Yonsei University Email: yi@yonsei.ac.kr Abstract I will present new results on the formation and fate of discs of spiral galaxies from the New Horizon and Galactica simulations. The high-resolution simulations (>40pc) reveal the history of disc settling, build-up, and fading in great detail and provide hints …
A list of recent colloquia, with slides in some cases, can be found here.