Publications (6)
Resolving the Outer Disks and Halos of Nearby Galaxies
Anil Seth, Roelof de Jong, David Radburn-Smith +1
In a hierarchical merging scenario, the outer parts of a galaxy are a fossil record of the galaxy's early history. Observations of the outer disks and halos of galaxies thus provid…
The ACS Nearby Galaxy Survey Treasury XI. The Remarkably Undisturbed NGC 2403 Disk
Benjamin F. Williams, Julianne J. Dalcanton, Adrienne Stilp +3
We present detailed analysis of color-magnitude diagrams of NGC2403, obtained from a deep (m<28) Hubble Space Telescope (HST) Wide Field Planetary Camera 2 observation of the outer…
Testing galaxy formation models with the GHOSTS survey: The color profile of M81's stellar halo
Antonela Monachesi, Eric F. Bell, David Radburn-Smith +6
We study the properties of the stellar populations in M81's outermost part, which hereafter we will term the stellar halo, using HST ACS/WFC observations of 19 fields from the GHOS…
On the relation between metallicity and RGB color in HST/ACS data
David Streich, Roelof S. de Jong, Jeremy Bailin +3
The determination of stellar metallicity and its gradient in external galaxies is a difficult task, but crucial for the understanding of galaxy formation and evolution. The color o…
Beta, Local SNIa data and the Great Attractor
John Lucey, David Radburn-Smith, Mike Hudson
We compare the measured peculiar velocities of 98 local (<150/h Mpc) type Ia supernovae (SNIa) with predictions derived from the PSCz. There is excellent agreement between the two…
The GHOSTS survey. II. The diversity of Halo Color and Metallicity Profiles of Massive Disk Galaxies
Antonela Monachesi, Eric F. Bell, David Radburn-Smith +5
We study the stellar halo color properties of six nearby massive highly inclined disk galaxies using Hubble Space Telescope Advanced Camera for Surveys and Wide Field Camera 3 obse…