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UID:bb014e0c8a84c82797fc74f7aee8132f
CATEGORIES:Guest Speaker Night
CREATED:20180218T162632
SUMMARY:Guest Speaker - Dr Jesse van de Sande (SIfA, University of Sydney)
DESCRIPTION:What do galaxies and shadow puppets have in common?Galaxies come in all sha
pes and sizes. It is hard not to be impressed by the majestic variety in ga
laxy morphology that the Universe has to offer. Besides creating just prett
y images, galaxy shape and morphology also provide important clues on how g
alaxies formed and evolved. Large computer simulations suggest that collisi
ons between galaxies alter their appearance. The more interactions a galaxy
experiences, the rounder it becomes. However, galaxies are so far away tha
t we can only observe them as two-dimensional projections on the celestial
sphere. Figuring out the true shape of galaxies is a bit like shadow puppet
ry without instructions; ever tried twisting your arms and fingers to creat
e the image of an African Unladen Swallow? So, how do astronomers derive th
e true three-dimensional shape of galaxies? In this talk I will explain how
Australian Astronomers have invented an instrument that can do exactly tha
t. These tools now allow us to figure out how galaxies like our Milky Way h
ave formed and evolve.\nDr Jesse van de Sande\nJesse van de Sande is a Rese
arch Fellow at the Sydney Institute for Astronomy at the University of Sydn
ey studying how galaxies form and evolve. He tries to solve the big questio
ns such as ‘How was the Milky Way Galaxy formed?’ and ‘What will happen to
our Milky Way after it collides with the Andromeda Galaxy?’ Jesse uses the
Anglo Australian Telescope with an instrument called SAMI to study the moti
ons of stars within galaxies. For his PhD thesis, he used the Hubble Space
Telescope and the Very Large Telescopes in Chilli to investigate the format
ion and evolution of massive galaxies in the early Universe. \n
X-ALT-DESC;FMTTYPE=text/html:What do galaxies and shadow puppets have in common?
Galaxies com
e in all shapes and sizes. It is hard not to be impressed by the majestic v
ariety in galaxy morphology that the Universe has to offer. Besides creatin
g just pretty images, galaxy shape and morphology also provide important cl
ues on how galaxies formed and evolved. Large computer simulations suggest
that collisions between galaxies alter their appearance. The more interacti
ons a galaxy experiences, the rounder it becomes. However, galaxies are so
far away that we can only observe them as two-dimensional projections on th
e celestial sphere. Figuring out the true shape of galaxies is a bit like s
hadow puppetry without instructions; ever tried twisting your arms and fing
ers to create the image of an African Unladen Swallow? So, how do astronome
rs derive the true three-dimensional shape of galaxies? In this talk I will
explain how Australian Astronomers have invented an instrument that can do
exactly that. These tools now allow us to figure out how galaxies like our
Milky Way have formed and evolve.
Dr Jesse van de Sande
Jesse van de Sande is a Research Fellow at the Sydney Institute for A
stronomy at the University of Sydney studying how galaxies form and evolve.
He tries to solve the big questions such as ‘How was the Milky Way G
alaxy formed?’ and ‘What will happen to our Milky Way after it
collides with the Andromeda Galaxy?’ Jesse uses the Anglo Australian
Telescope with an instrument called SAMI to study the motions of stars with
in galaxies. For his PhD thesis, he used the Hubble Space Telescope and the
Very Large Telescopes in Chilli to investigate the formation and evolution
of massive galaxies in the early Universe.
DTSTAMP:20260622T123711
DTSTART;TZID=Australia/Sydney:20181004T193000
DTEND;TZID=Australia/Sydney:20181004T213000
SEQUENCE:0
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