1.9k citations · 3.7k across the 16 of their papers we have counts for
15 papers
The binary fraction in the globular cluster NGC 6397
D. S. Davis, H. B. Richer, J. Anderson +5
Using Hubble Space Telescope (HST) observations of the globular cluster NGC6397, we constrain the cluster's binary fraction. The observations consist of two fields: the primary sci…
The White Dwarf Cooling Sequence of NGC6397
Brad M. S. Hansen, Jay Anderson, James Brewer +10
We present the results of a deep Hubble Space Telescope (HST) exposure of the nearby globular cluster NGC6397, focussing attention on the cluster's white dwarf cooling sequence. Th…
Probing the Faintest Stars in a Globular Star Cluster
Harvey B. Richer, Jay Anderson, James Brewer +10
NGC 6397 is the second closest globular star cluster to the Sun. Using 5 days of time on the Hubble Space Telescope, we have constructed the deepest ever color-magnitude diagram fo…
The Space Motion of the Globular Cluster NGC 6397
Jasonjot S. Kalirai, Jay Anderson, Harvey B. Richer +12
As a by-product of high-precision, ultra-deep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large populatio…
The white dwarf cooling sequence in NGC 6791
L. R. Bedin, M. Salaris, G. Piotto +5
In the old, populous, and metal-rich open cluster NGC 6791 we have used deep HST/ACS images to track the white dwarf cooling sequence down to m_F606W~28.5. The white dwarf luminosi…
Carbon Stars and other Luminous Stellar Populations in M33
J. F. Rowe, H. B. Richer, J. P. Brewer +1
The M33 galaxy is a nearby, relatively metal-poor, late-type spiral. Its proximity and almost face-on inclination means that it projects over a large area on the sky, making it an…