399 citations · 8.4k across the 106 of their papers we have counts for
6 papers · 2 filters
"Weather" Variability Of Close-in Extrasolar Giant Planets
Kristen Menou, James Y-K. Cho, Sara Seager +1
Shallow-water numerical simulations show that the atmospheric circulation of the close-in extrasolar giant planet (EGP) HD 209458b is characterized by moving circumpolar vortices a…
Changing Face of the Extrasolar Giant Planet, HD 209458b
James Y-K. Cho, Kristen Menou, Brad Hansen +1
High-resolution atmospheric flow simulations of the tidally-locked extrasolar giant planet, HD 209458b, show large-scale spatio-temporal variability. This is in contrast to the sim…
Type Ia Supernovae and High Velocity White Dwarfs
Brad Hansen
I examine the hypothesis that many of the high velocity white dwarfs observed by Oppenheimer et al. (2001) are the remnants of donor stars from binaries that produced type Ia super…
Helium-Core White Dwarfs in Globular Clusters
Brad Hansen, Vassiliki Kalogera, Frederic A. Rasio
We examine the theoretical implications of a population of low-mass helium-core white dwarfs in globular clusters. In particular, we focus on the observed population in the core of…
The White Dwarf Cooling Sequence of the Globular Cluster Messier 4
Brad M. S. Hansen, James Brewer, Greg G. Fahlman +7
We present the white dwarf sequence of the globular cluster M4, based on a 123 orbit Hubble Space Telescope exposure, with limiting magnitude V = 30, I = 28. The white dwarf lumino…
The Lower Main Sequence and Mass Function of the Globular Cluster Messier 4
Harvey B. Richer, James Brewer, Gregory G. Fahlman +9
The deepest optical image ever in a globular star cluster, a Hubble Space Telescope (HST) 123 orbit exposure in a single field of Messier 4, was obtained in 2 filters (F606W, F814W…