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A pilot survey of stellar tidal streams in nearby spiral galaxies
David Martinez-Delgado, R. Jay Gabany, Jorge Penarrubia +4
Within the hierarchical framework for galaxy formation, merging and tidal interactions are expected to shape large galaxies to this day. While major mergers are quite rare at prese…
Evolution of stellar disk truncations since z=1
Ignacio Trujillo, Ruyman Azzollini, Judit Bakos +2
We present our recent results on the cosmic evolution of the outskirst of disk galaxies. In particular we focus on disk-like galaxies with stellar disk truncations. Using UDF, GOOD…
Color Profiles of Spiral Galaxies: Clues on Outer-Disk Formation Scenarios
Judit Bakos, Ignacio Trujillo, Michael Pohlen +1
We have explored radial color and stellar surface mass density profiles for a sample of 85 late-type spiral galaxies with deep (down to ~27 mag arcsec^-2) SDSS g'- and r'-band surf…
The ghost of a dwarf galaxy: fossils of the hierarchical formation of the nearby spiral galaxy NGC 5907
David Martinez-Delgado, Jorge Penarrubia, R. Jay Gabany +3
We present an extragalactic perspective of an extended stellar tidal stream wrapping around the edge-on, spiral galaxy NGC 5907. Our deep images reveal for the first time a large s…
Extended UV (XUV) Emission in Nearby Galaxy Disks
A. Gil de Paz, D. A. Thilker, L. Bianchi +19
We summarize the main properties of the extended UV (XUV) emission found in roughly 30% of the nearby spiral galaxies observed by the GALEX satellite. Two different classes of XUV…