206 citations · 642 across the 9 of their papers we have counts for
9 papers
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…
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…
Evolution of Galactic Discs: Multiple Patterns, Radial Migration and Disc Outskirts
I. Minchev, B. Famaey, A. C. Quillen +5
We investigate the evolution of galactic disks in N-body Tree-SPH simulations. We find that disks, initially truncated at three scale-lengths, can triple their radial extent, solel…
The Structure and Metallicity Gradient in the Extreme Outer Disk of NGC 7793
Marija Vlajić, Joss Bland-Hawthorn, Kenneth C. Freeman
Studies of outer regions of spirals disks are fundamental to our understanding of both the process of galaxy assembly and the subsequent secular evolution of galaxies. In an earlie…
Outer Spiral Disks as Clues to Galaxy Formation and Evolution
Marija Vlajić
Recent studies of outer spiral disks have given rise to an abundance of new results. We discuss the observational and theoretical advances that have spurred the interest in disk ou…
The Abundance Gradient in the Extremely Faint Outer Disk of NGC 300
Marija Vlajić, Joss Bland-Hawthorn, Ken C. Freeman
In earlier work, we showed for the first time that the resolved stellar disk of NGC 300 is very extended with no evidence for truncation, a phenomenon that has since been observed…
NGC 300: an extremely faint, outer stellar disk observed to 10 scale lengths
Joss Bland-Hawthorn, Marija Vlajic, Ken Freeman +1
We have used the Gemini Multi-object Spectrograph (GMOS) on the Gemini South 8m telescope in exceptional conditions (0.6" FWHM seeing) to observe the outer stellar disk of the Scul…