AAO Colloquia

The AAO organises frequent colloquia at our North Ryde headquarters. These are usually held Thursday morning at 11:00 am, though other dates are occasionally scheduled. We welcome talks from visiting astronomers - if you are passing through Sydney and would like to tell us about your work, please fill out the AAO Visitor Form. The ATNF (Australia Telescope National Facility) also organises colloquia at their Epping offices. A schedule for these talks can be found on the ATNF Colloquia webpage. The AAO and ATNF occasionally organise Joint Colloquia when the speaker is likely to be of interest to both radio and optical communities. These talks will be found in both the list below, and the ATNF schedule. A list of past speakers can also be found below.

Next Scheduled AAO Colloquium

Yuan-Sen Ting, speaking on "Prospects for chemically tagging stars in the Galaxy", to be held in the AAO Meeting Room (Room 7, 1st Floor, Building 2) at 02:00PM on Thursday 3rd September, 2015.
Abstract:
It is now well-established that the elemental abundance patterns of stars holds key clues not only to their formation but also to the assembly histories of galaxies. One of the most exciting possibilities is the use of stellar abundance patterns as “chemical tags” to identify stars that were born in the same molecular cloud. We assess the prospects of chemical tagging as a function of several key underlying parameters. We find that even very large overdensities in chemical space do not guarantee that the overdensity is due to a single set of stars from a common birth cloud. However, different cluster mass functions imprint different degrees of clumpiness in chemical space. These differences provide the opportunity to statistically reconstruct the slope and high mass cutoff of CMF and its evolution through cosmic time. By studying the APOGEE data set, we show that the Galactic disk is unlikely to have formed clusters more massive than 3 × 10^7 Msun at any point in its history and put a first abundance-based constraint on the cluster mass function for the old disk stars in the Milky Way.

 

Upcoming Scheduled Colloquia

DateTimeLocationSpeakerTitle
Thursday 3rd September, 201502:00PMAAO Meeting Room (Room 7, 1st Floor, Building 2)Yuan-Sen Ting (CfA, Harvard)Prospects for chemically tagging stars in the Galaxy
Thursday 10th September, 201511:00AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Tomaz Zwitter (Ljubljana)Dynamical interstellar medium with Gaia and ground-based massive spectroscopic surveys
Thursday 17th September, 201502:00PMAAO Meeting Room (Room 7, 1st Floor, Building 2)Jeffrey Cooke and Peter Gillingham (Swinburne / AAO)An Australian-led wide-field camera for the Keck Observatory
Thursday 15th October, 201511:00AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Tadayuki Kodama and Suzuki Tomoko (National Astronomical Observatory in Japan)TBA

Past Colloquia

DateTimeLocationSpeakerTitle
Monday 31st August, 201511:00AMAAO Meeting Room (Room 7, 1st Floor, Building 2)David Nataf (ANU)Recent Developments in the Study of Interstellar Extinction
Thursday 20th August, 201511:30AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Barak Zackay (Weizmann Institute of Science)TBA
Thursday 6th August, 201511:00AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Maria Hammerstrom and Jenifer Millard (AAO Winter Students)Huntsman Winter Student Projects 2015: Light pollution & the point spread function
Thursday 30th July, 201511:30AMOtherProf Katherine Blundell (University of Oxford)Time-Domain Spectroscopy from the Global Jet Watch Observatories
Wednesday 15th July, 201511:00AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Tim Abbott (CTIO)NOAO, CTIO, and the Blanco 4-m telescope, v2.0
Thursday 25th June, 201511:00AMAAO Large Meeting Room (Room 1, Ground Floor, Building 3)Fred Watson (AAO )Public Engagement through Tourism
Thursday 18th June, 201511:00AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Lee Spitler (Macquarie University/ AAO)The ZFOURGE survey: the evolution of galaxies since redshift z=4
Thursday 11th June, 201511:30AMAAO Meeting Room (Room 7, 1st Floor, Building 2)Andrew Casey (University of Cambridge)The Best and Brightest Metal-Poor Stars
Thursday 4th June, 201502:00PMAAO Meeting Room (Room 7, 1st Floor, Building 2)Daniela Calzetti (U Mass Amherst)Star Formation Across Space
Wednesday 20th May, 201502:00PMAAO Meeting Room (Room 7, 1st Floor, Building 2)Duncan Forbes (Swinburne University)Small Stellar Systems: Across the Star Cluster-Galaxy Divide
Show all past colloquia