Dr JJ Eldridge

MA, MSci, PhD (Cambridge), FRAS, MInstP

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Senior Lecturer


I obtained my MA and MSci degrees from the University of Cambridge in 2001. I stayed at the University to study for my PhD in astrophysics at the Institute of Astronomy. After this I undertook postdoctoral research at the Institut d’Astrophysics de Paris, Queen’s University Belfast and the Institute of Astronomy. In 2011 I was appointed as a Lecturer of Astrophysics at The University of Auckland.

In addition to my research activities I am also keen to participate in public understanding of science activities and have helped out at open days for previous departments. I have also given many public talks in Inverness, Chester, Antrim and Cambridge. My talks are on various subjects such as: "The Birth, Life and Death of Stars", "Stars in their death throes” and “Supernova Kicks and Runaway Stars".

Recently I have given a few talks on the topic of assessing how accurate science-fiction can be with titles such as: "The Science of Sci-Fi: The Good the Bad and the Ugly" and "The Science of Sci-Fi: does every planet look just like home?"

Research | Current

  • Astrophysics
  • Stellar Evolution of Single and Binary Stars
  • Supernovae
  • Gamma-ray Bursts
  • Stellar Population and Spectral Synthesis
  • High-redshift galaxies

My research is mainly focussed upon the evolution of stars. I use the Cambridge STARS code to make numerical models of stars and then compare them to a broad range of observations. These include supernovae and their progenitors, long & short GRBs, resolved and unresolved stellar populations.

Recently I have created a unique Binary Population and Spectral Synthesis code (BPASS). While similar codes (such as starburst99) exist BPASS has important features, each of which set it apart from other codes and in combination make it the cutting edge. For more information see the www.bpass.org.uk website. A great amount of time and effort has been invested to create BPASS. The development is now complete and it is at the centre of much of my current and future research.


Teaching | Current

Currently teaching:

  • Physis 107/107G "Planets, Stars and Galaxies"
  • Physcs 251 "Modern Physics"

Postgraduate supervision

  • Mr Liam McClelland
  • Ms Lin Xiao
  • Mr John Bray

Areas of expertise

Astronomy and astrophysics: the evolution of single and binary stars, supernovae and gamma-ray bursts.

Selected publications and creative works (Research Outputs)

  • Eldridge, J. J., Stanway, E. R., Xiao, L., McClelland, L. A. S., Taylor, G., Ng, M., ... Bray, J. C. (2017). Binary population and spectral synthesis version 2.1: Construction, observational verification, and new results. Publications of the Astronomical Society of Australia, 3410.1017/pasa.2017.51
    Other University of Auckland co-authors: John Bray
  • Eldridge, J. J., & Stanway, E. R. (2016). BPASS predictions for binary black hole mergers. Monthly Notices of the Royal Astronomical Society, 462 (3), 3302-3313. 10.1093/mnras/stw1772
  • Eldridge, J. J., Fraser, M., Smartt, S. J., Maund, J. R., & Mark Crockett, R. (2013). The death of massive stars - II. Observational constraints on the progenitors of type Ibc supernovae. Monthly Notices of the Royal Astronomical Society, 436 (1), 774-795. 10.1093/mnras/stt1612
  • Walmswell, J. J., Eldridge, J. J., Brewer, B. J., & Tout, C. A. (2013). A transdimensional Bayesian method to infer the star formation history of resolved stellar populations. arXiv preprint arXiv:1308.0945
    Other University of Auckland co-authors: Brendon Brewer
  • Eldridge, J. J. (2012). Stochasticity, a variable stellar upper mass limit, binaries and star formation rate indicators. Monthly Notices of the Royal Astronomical Society, 422 (1), 794-803. 10.1111/j.1365-2966.2012.20662.x
  • Eldridge, J. J., & Stanway, E. R. (2012). The effect of stellar evolution uncertainties on the rest-frame ultraviolet stellar lines of Civ and Heii in high-redshift Lyman-break galaxies. Monthly Notices of the Royal Astronomical Society, 419 (1), 479-489. 10.1111/j.1365-2966.2011.19713.x
  • Walmswell, J. J., & Eldridge, J. J. (2012). Circumstellar dust as a solution to the red supergiant supernova progenitor problem. Monthly Notices of the Royal Astronomical Society, 419 (3), 2054-2062. 10.1111/j.1365-2966.2011.19860.x
  • Eldridge, J. J., Langer, N., & Tout, C. A. (2011). Runaway stars as progenitors of supernovae and gamma-ray bursts. Monthly Notices of the Royal Astronomical Society, 414 (4), 3501-3520. 10.1111/j.1365-2966.2011.18650.x
    URL: http://hdl.handle.net/2292/15674


Contact details

Primary office location

Level 7, Room 717
New Zealand

Social links

Web links