176 citations · 1.6k across the 84 of their papers we have counts for
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Deep HST Imaging in 47 Tucanae: A Global Dynamical Model
J. Heyl, I. Caiazzo, H. Richer +3
Multi-epoch observations with ACS and WFC3 on HST provide a unique and comprehensive probe of stellar dynamics within 47 Tucanae. We confront analytic models of the globular cluste…
The Onset of Convective Coupling and Freezing in the White Dwarfs of 47 Tucanae
Alysa Obertas, Ilaria Caiazzo, Jeremy Heyl +3
Using images from the Hubble Space Telescope Advanced Camera for Surveys, we measure the rate of cooling of white dwarfs in the globular cluster 47 Tucanae and compare it to modell…
Magnetar giant flare high-energy emission
C. Elenbaas, D. Huppenkothen, C. Omand +4
High energy ( keV) emission has been detected persisting for several tens of seconds after the initial spike of magnetar giant flares. It has been conjectured that this emis…
Polluting White Dwarfs with Perturbed Exo-Comets
Ilaria Caiazzo, Jeremy S. Heyl
We present a model to account for the observed debris disks around young white dwarfs and the presence of metal-lines in their spectra. Stellar evolution models predict that the ma…
Globular cluster absolute ages from cooling brown dwarfs
Ilaria Caiazzo, Jeremy S. Heyl, Harvey Richer +1
Globular clusters are the oldest conglomerates of stars in our Galaxy and can be useful laboratories to test theories from stellar evolution to cosmology. In this paper, we present…