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Lucas Macri

(he / him / his)

Faculty: Associate Dean, Professor


MIST M423 (main office)

BLOC 520A (aux. location)


Lucas Macri works on the Extragalactic Distance Scale, studies of electromagnetic counterparts to gravitational-wave sources, and large-scale galaxy flows. The main focus of his research is on Mira and Cepheid variables, which he studies using the Hubble Space Telescope and many ground-based observatories. One of the goals of his research is to measure a more precise value of the Hubble constant, to better constrain the equation of state of dark energy and test the current cosmological model.

Latest Publications

W. Yuan, M. M. Fausnaugh, S. L. Hoffmann, L. M. Macri, B. M. Peterson, A. G. Riess, M. C. Bentz, J. S. Brown, E. Dalla Bontà, R. I. Davies, G. De Rosa, L. Ferrarese, C. J. Grier, E. K. S. Hicks, C. A. Onken, R. W. Pogge, T. Storchi-Bergmann, and M. Vestergaard. “The Cepheid Distance to the Seyfert 1 Galaxy NGC 4151.” The Astrophysical Journal, 902(1), 26, Oct 2020.

Trystan S Lambert, R C Kraan-Korteweg, T H Jarrett, and L M Macri. “The 2MASS redshift survey galaxy group catalogue derived from a graph-theory based friends-of-friends algorithm.” Monthly Notices of the Royal Astronomical Society, 497(3), 2954--2973, Jul 2020.

Adam G. Riess, Wenlong Yuan, Stefano Casertano, Lucas M. Macri, and Dan Scolnic. “The Accuracy of the Hubble Constant Measurement Verified through Cepheid Amplitudes.” The Astrophysical Journal, 896(2), L43, Jun 2020.

Ryan J Foley, Samantha L Hoffmann, Lucas M Macri, Adam G Riess, Peter J Brown, Alexei V Filippenko, Melissa L Graham, and Peter A Milne. “Significant luminosity differences of two twin Type Ia supernovae.” Monthly Notices of the Royal Astronomical Society, 491(4), 5991--5999, Feb 2020.

Rodolfo Artola, et al. “TOROS Optical follow-up of the Advanced LIGO--VIRGO O2 second observational campaign.” Monthly Notices of the Royal Astronomical Society, 493(2), 2207--2214, Apr 2020.

Awards & Recognition

  • Distinguished Achievement in Teaching - College Level (2014)
  • Mitchell-Heep-Munnerlyn Endowed Career Enhancement Professorship in Physics or Astronomy (2010)

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