193 citations · 526 across the 8 of their papers we have counts for
8 papers
Extragalactic archeology with the GHOSTS Survey I. - Age-resolved disk structure of nearby low-mass galaxies
David Streich, Roelof S. de Jong, Jeremy Bailin +5
We study the individual evolution histories of three nearby low-mass edge-on galaxies (IC 5052, NGC4244, and NGC5023). Using resolved stellar populations, we constructed star count…
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…
On the Formation of Galactic Thick Disks
I. Minchev, M. Martig, D. Streich +3
Recent spectroscopic observations in the Milky Way suggest that the chemically defined thick disk (stars with high [alpha/Fe] ratios and thus old) has a significantly smaller scale…
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…
Constraining the age of the NGC 4565 HI Disk Warp: Determining the Origin of Gas Warps
David J. Radburn-Smith, Roelof S. de Jong, David Streich +7
We have mapped the distribution of young and old stars in the gaseous HI warp of NGC 4565. We find a clear correlation of young stars (<600 Myr) with the warp, but no coincident ol…
GHOSTS I: A New Faint very Isolated Dwarf Galaxy at D = 12 +/- 2 Mpc
Antonela Monachesi, Eric F. Bell, David J. Radburn-Smith +8
We report the discovery of a new faint dwarf galaxy, GHOSTS I, using HST/ACS data from one of our GHOSTS (Galaxy Halos, Outer disks, Substructure, Thick disk, and Star clusters) fi…
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…
Outer-Disk Populations in NGC 7793: Evidence for Stellar Radial Migration
David J. Radburn-Smith, Rok Roskar, Victor P. Debattista +8
We analyzed the radial surface brightness profile of the spiral galaxy NGC 7793 using HST/ACS images from the GHOSTS survey and a new HST/WFC3 image across the disk break. We used…