The absolute number and the density profiles of different types of stars in the solar neighborhood are a fundamental anchor…Monthly Notices of the Royal Astronomical Society
The Statistical Cosmology group develops novel algorithms and ways of thinking to apply to datasets to answer fundamental questions about the cosmos.
Astronomy is entering a new era. With ground- and space-based telescopes equipped with increasingly more sensitive cameras and instruments, enabling surveys, such as Kepler, Gaia and DES, that are discovering thousands of planets and millions of stars and galaxies, we are able to seek answers to fundamental questions about the origin and evolution of the universe.
The Proper Motion of Pyxis: the first use of Adaptive Optics in tandem with HST on a faint halo object
We present a proper motion measurement for the halo globular cluster Pyxis, using HST/ACS data as the first epoch, and…The Astrophysical Journal
The spatial variations of the velocity field of local stars provide direct evidence of Galactic differential rotation. The local divergence,…arXiv