Publications

The tidal remnant of an unusually metal-poor globular cluster

Published in Nature, 2020

This study identifies the Phoenix stellar stream as the debris of a globular cluster with a metallicity of [Fe/H] = −2.7, challenging the previously thought metallicity floor for globular clusters.

Recommended citation: Wan, Z., Lewis, G. F., Li, T. S., et al. (2020). "The tidal remnant of an unusually metal-poor globular cluster." Nature, 583, 768–770. https://doi.org/10.1038/s41586-020-2483-6
Download Paper

Galaxy Tagging: Photometric Redshift Refinement and Group Richness Enhancement

Published in Monthly Notices of the Royal Astronomical Society, 2018

This study introduces the “galtag” algorithm, which enhances photometric redshift accuracy and group richness estimation by probabilistically associating faint galaxies with observed galaxy groups from a spectroscopic survey.

Recommended citation: Kafle, P. R., Robotham, A. S. G., Driver, S. P., Deeley, S., Nørgaard-Nielsen, P., & Drinkwater, M. J. (2018). "Galaxy Tagging: Photometric Redshift Refinement and Group Richness Enhancement." Monthly Notices of the Royal Astronomical Society, 479(3), 3746–3761. https://doi.org/10.1093/mnras/sty1536
Download Paper

The Need for Speed: Escape Velocity and Dynamical Mass Measurements of the Andromeda Galaxy

Published in Monthly Notices of the Royal Astronomical Society, 2018

This study employs high-velocity planetary nebulae to determine the escape velocity and total mass of the Andromeda galaxy (M31), revealing a virial mass of 0.8 × 10¹² Mₛₒₙ and a radius of 240 kpc.

Recommended citation: Kafle, P. R., Sharma, S., Lewis, G. F., Robotham, A. S. G., & Driver, S. P. (2018). "The Need for Speed: Escape Velocity and Dynamical Mass Measurements of the Andromeda Galaxy." Monthly Notices of the Royal Astronomical Society, 475(3), 4043–4054. https://doi.org/10.1093/mnras/sty082
Download Paper

Published in , 1900

Kinematics of the Stellar Halo and the Mass Distribution of the Milky Way Using Blue Horizontal Branch Stars

Published in Astrophysical Journal, 2012

This study presents a kinematic analysis of the Galactic halo using 4664 blue horizontal branch stars from the SDSS/SEGUE survey, determining velocity dispersion profiles and the anisotropy profile up to a radius of approximately 60 kpc.

Recommended citation: Kafle, P. R., Sharma, S., Lewis, G. F., & Bland-Hawthorn, J. (2012). "Kinematics of the Stellar Halo and the Mass Distribution of the Milky Way Using Blue Horizontal Branch Stars." Astrophysical Journal, 761(2), 98. https://doi.org/10.1088/0004-637X/761/2/98
Download Paper