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Ordinary meeting: Siriously, a cluster hidden by the brightest star in the sky

Friday 25th August 2017 - 8:00pm
Topic: Siriously, a cluster hidden by the brightest star in the sky
Speaker: Dr Jeffrey Simpson, AAO
Venue: Epping Creative Centre - 26 Stanley Road, Epping
Abstract: The Gaia satellite will revolutionise our view of the Galaxy by providing the positions and motions of over a billion stars. It has many advantages over ground-based surveys which make it an excellent tool for discovering new stellar clusters. Already it has been used to discover a cluster that is only 10 arcminutes from Sirius. Using the Anglo-Australian Telescope, I have been observing this cluster. I will also discuss other small clusters that I have been studying with the phone number-esque names of ESO452-SC11 and ESO280-SC06, both of which turned out to have very interesting properties that were unknown before we pointed the Anglo-Australian Telescope at them.
Biography: Dr Jeffrey Simpson is a research fellow at the Australian Astronomical Observatory. He studies stellar clusters in the Milky Way, exploring the chemical abundances of their stars to try and understand the formation of these groups of stars. He gained his PhD at the University of Canterbury in New Zealand and then after a brief postdoc at Macquarie University has been at the AAO for about 2 years. He is an active member of the GALAH Survey and helps people use the HERMES and AAOmega spectrograph.

Event Date: 
Friday, 25 August, 2017 - 20:00
Epping Creative Centre, 26 Stanley Road, Epping NSW

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