Jeffrey Simpson

Astronomer at UNSW Sydney.

University of New South Wales

Kensington Campus

Old Main Building

Kensington

Sydney NSW Australia

I am an astronomer at the University of New South Wales. My research program uses the largest datasets of Milky Way stars to study the history of our Galaxy.

I have worked on the biggest and smallest globular clusters, the most ancient stream of stars, and pairs of stars from destroyed star clusters.

I am a member of the Survey Management Group for the GALAH Survey, and am a builder for the Southern Stellar Stream Spectroscopic Survey.

selected publications

  1. The GALAH survey: accreted stars also inhabit the Spite plateau
    Jeffrey D. Simpson, Sarah L. Martell, Sven Buder, Joss Bland-Hawthorn, Andrew R. Casey, Gayandhi M. Silva, Valentina D’Orazi, Ken C. Freeman, Michael Hayden, Janez Kos, Geraint F. Lewis, Karin Lind, Katharine J. Schlesinger, Sanjib Sharma, Dennis Stello, Daniel B. Zucker, Tomaž Zwitter, Martin Asplund, Gary Costa, Klemen Čotar, Thor Tepper-García, Jonathan Horner, Thomas Nordlander, Yuan-Sen Ting, Rosemary F. G. Wyse, and GALAH Collaboration
    MNRAS, 2021
  2. The GALAH survey: a census of lithium-rich giant stars
    Sarah L. Martell, Jeffrey D. Simpson, Adithya G. Balasubramaniam, Sven Buder, Sanjib Sharma, Marc Hon, Dennis Stello, Yuan-Sen Ting, Martin Asplund, Joss Bland-Hawthorn, Gayandhi M. De Silva, Ken C. Freeman, Michael Hayden, Janez Kos, Geraint F. Lewis, Karin Lind, Daniel B. Zucker, Tomaž Zwitter, Simon W. Campbell, Klemen Čotar, Jonathan Horner, Benjamin Montet, and Rob Wittenmyer
    MNRAS, 2021
  3. The tidal remnant of an unusually metal-poor globular cluster
    Zhen Wan, Geraint F. Lewis, Ting S. Li, Jeffrey D. Simpson, Sarah L. Martell, Daniel B. Zucker, Jeremy R. Mould, Denis Erkal, Andrew B. Pace, Dougal Mackey, Alexander P. Ji, Sergey E. Koposov, Kyler Kuehn, Nora Shipp, Eduardo Balbinot, Joss Bland-Hawthorn, Andrew R. Casey, Gary S. Da Costa, Prajwal Kafle, Sanjib Sharma, and Gayandhi M. De Silva
    Natur, 2020
  4. The closest extremely low-mass white dwarf to the Sun
    Adela Kawka, Jeffrey D. Simpson, Stéphane Vennes, Michael S. Bessell, Gary S. Da Costa, Anna F. Marino, and Simon J. Murphy
    MNRAS, 2020
  5. The GALAH Survey: Chemically tagging the Fimbulthul stream to the globular cluster ω Centauri
    Jeffrey D. Simpson, Sarah L. Martell, Gary Da Costa, Jonathan Horner, Rosemary F. G. Wyse, Yuan-Sen Ting, Martin Asplund, Joss Bland-Hawthorn, Sven Buder, Gayandhi M. De Silva, Ken C. Freeman, Janez Kos, Geraint F. Lewis, Karin Lind, Sanjib Sharma, Daniel B. Zucker, Tomaž Zwitter, Klemen Čotar, Peter L. Cottrell, and Thomas Nordlander
    MNRAS, 2020
  6. Discovery of a nearby 1700 km s-1 star ejected from the Milky Way by Sgr A*
    Sergey E. Koposov, Douglas Boubert, Ting S. Li, Denis Erkal, Gary S. Da Costa, Daniel B. Zucker, Alexander P. Ji, Kyler Kuehn, Geraint F. Lewis, Dougal Mackey, Jeffrey D. Simpson, Nora Shipp, Zhen Wan, Vasily Belokurov, Joss Bland-Hawthorn, Sarah L. Martell, Thomas Nordlander, Andrew B. Pace, Gayandhi M. De Silva, Mei-Yu Wang, and S5 Collaboration
    MNRAS, 2020
  7. A nitrogen-enhanced metal-poor star discovered in the globular cluster ESO280-SC06
    Jeffrey D. Simpson, and Sarah L. Martell
    MNRAS, 2019