41 citations · 115 across the 4 of their papers we have counts for
4 papers
Carbon stars as standard candles: II. The median J magnitude as a distance indicator
Javiera Parada, Jeremy Heyl, Harvey Richer +2
We introduce a new distance determination method using carbon-rich asymptotic giant branch stars (CS) as standard candles and the Large and Small Magellanic Clouds (LMC and SMC) as…
Carbon stars as standard candles: I. The luminosity function of carbon stars in the Magellanic Clouds
Paul Ripoche, Jeremy Heyl, Javiera Parada +1
Our goal in this paper is to derive a carbon-star luminosity function that will eventually be used to determine distances to galaxies at - Mpc and hence yield a value of th…
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…
A Measurement of Diffusion in 47 Tucanae
Jeremy Heyl, Harvey B. Richer, Elisa Antolini +4
Using images from the Hubble Space Telescope Wide-Field Camera 3, we measure the rate of diffusion of stars through the core of the globular cluster 47 Tucanae using a sample of yo…