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Colloquia Series

For more information on colloquia at the Centre for Astrophysics and Supercomputing please contact Dr. Simon Stevenson and Dr. Stefan Osłowski ()

Swinburne Virtual Reality Theatre
AR Building, Room 104
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2019 Colloquia

Tuesday Apr 30, 10:30
Stephanie Juneau (NOAO)
Colloquium: TBA
Thursday Apr 18, 10:30
Jane Kaczmarek (CSIRO)
Colloquium: TBA
Thursday Apr 4, 10:30
Daniel Reardon (Swinburne)
Colloquium: TBA
Thursday Mar 28, 10:30
Amelia Fraser-McKelvie (University of Nottingham)
Colloquium: TBA
Thursday Mar 21, 10:30
Vera Patricio (Niels Bohr Institute)
Colloquium: TBC
Thursday Mar 14, 10:30
Laura Prichard (STSci)
Colloquium: TBA
Tuesday Mar 12, 10:30
Marios Karouzos (Nature Astronomy) ()
Colloquium: TBA
Thursday Feb 28, 10:30
Sowgat Muzahid (Leiden University)
Colloquium: TBA
Thursday Feb 14, 10:30
Sebastiano Cantalupo (ETH Zurich)
Colloquium: TBA
Thursday Feb 7, 14:00
Student Review: Wael Farah's 30-month review
Thursday Feb 7, 10:30
Melanie Kaasinen (MPIA)
Colloquium: Weighing the Molecular Gas Reservoirs of High Redshift Galaxies
One of the outstanding problems in galaxy evolution studies is to link
the evolution of the star formation rate of galaxies to their molecular
gas content. Observationally, the last decade of studies have led to a
clear picture of the cosmic star formation history, which peaked at z~2
and has declined since then. However, it is unclear whether the
declining star formation rates are simply the result of lower molecular
gas masses, or whether the star formation efficiency has also evolved.
In this talk, I will discuss how the molecular gas contents of galaxies
are measured and highlight the difficulties of doing so at high
redshift. I will describe one of the most popular approaches, which
relies upon the dust continuum emission, and will present our recent
work where we test the validity of the dust continuum calibration
via a unique sample of z~2 galaxies with observations of both dust
continuum and CO(1-0) line emission.
Thursday Jan 31, 10:30
Mattheu Schaller (Leiden Observatory)
Colloquium: Baryonic effects on next-generation cosmological probes - How will we get the accuracy required?
n recent years cosmological hydro-dynamical simulations of representative volumes have reached a level of maturity where they
can be compared effectively against observational data. They can also be used to shed some lights onto galaxy formation processes
and how they affect the distribution of baryonic and dark matter. Understanding these effects are a key element required to fully
unlock the science of the next generation cosmological probes such as the Euclid mission.
In this talk, I will review some results from the EAGLE set of cosmological simulations focusing on the aspects highlighted above. I
will then discuss the challenges that lay ahead in terms of simulation complexity and how we are tackling some of them using our
new modern and open-source simulation code SWIFT.
Thursday Jan 17, 10:30
Xavier Prochaska ()
Colloquium: The Wolfe Disk: ALMA Discoveries of Distant, HI-selected Galaxies
I will review our series of successful programs to dissect the interstellar medium of distant, star-forming galaxies with the Atacama Large Millimeter Array (ALMA). In particular, I will discuss surveys of the set of HI-selected galaxies known as the damped Lya systems (DLAs). We resolve, in part, a decades-old struggle to identify the galactic counterparts of these DLAs and thereby place them firmly in the modern picture of galaxy formation. I will also highlight high spectral and spatial resolution observations of the Wolfe Disk, a z~4 galaxy with a Milky Way-like rotation curve.