Qualifications & Memberships
Research Interests
Research interests include:
- Spectroscopic and photometric analyses of stars, including a range of pulsating stars: Cepheid variables; R Coronae Borealis stars; RV Tauri stars; post-AGB stars; Extreme He and other rapidly pulsating stars.
- Abundances, particularly s-process elements, in late type stars.
- Astronomical instrumentation developments for Mt John Observatory and the Southern African Large Telescope: Adaptive Optics and SCIDAR measurements at Mt John; High Resolution Spectrograph (SALT HRS) design for SALT.
Recent Publications
- Simpson JD., Martell SL., Da Costa G., Casey AR., Freeman KC., Horner J., Ting YS., Nataf DM., Lewis GF. and Ness MK. (2019) The GALAH survey: Co-orbiting stars and chemical tagging. Monthly Notices of the Royal Astronomical Society 482(4): 5302-5315. http://dx.doi.org/10.1093/mnras/sty3042.
- Brunsden E., Pollard KR., Wright DJ., De Cat P. and Cottrell PL. (2018) Frequency and mode identification of γ Doradus from photometric and spectroscopic observations. Monthly Notices of the Royal Astronomical Society 475(3): 3813-3822. http://dx.doi.org/10.1093/mnras/sty034.
- Buder S., Asplund M., Duong L., Kos J., Lind K., Ness MK., Sharma S., Bland-Hawthorn J., Casey AR. and De Silva GM. (2018) The GALAH Survey: Second data release. Monthly Notices of the Royal Astronomical Society 478(4): 4513-4552. http://dx.doi.org/10.1093/mnras/sty1281.
- MacLean BT., Campbell SW., Amarsi AM., Nordlander T., Cottrell PL., De Silva GM., Lattanzio J., Constantino T., D'Orazi V. and Casagrande L. (2018) On the AGB stars of M4: A robust disagreement between spectroscopic observations and theory. Monthly Notices of the Royal Astronomical Society 481(1): 373-395. http://dx.doi.org/10.1093/mnras/sty2297.
- MacLean BT., Campbell SW., De Silva GM., Lattanzio J., D'Orazi V., Cottrell PL., Momany Y. and Casagrande L. (2018) AGB subpopulations in the nearby globular cluster NGC6397. Monthly Notices of the Royal Astronomical Society 475(1): 257-265. http://dx.doi.org/10.1093/mnras/stx3217.