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A tidally disrupting dwarf galaxy in the halo of NGC 253
Elisa Toloba, David Sand, Kristine Spekkens +7
We report the discovery of Scl-MM-Dw2, a new dwarf galaxy at a projected separation of 50 kpc from NGC 253, as part of the PISCeS (Panoramic Imaging Survey of Centaurus and S…
The extended halo of Centaurus A: uncovering satellites, streams, and substructures
D. Crnojević, D. J. Sand, K. Spekkens +7
We present the widest-field resolved stellar map to date of the closest ( Mpc) massive elliptical galaxy NGC 5128 (Centaurus A; Cen A), extending out to a projected galac…
Robotic Reverberation Mapping of Arp 151
S. Valenti, D. J. Sand, A. J. Barth +10
We present the first results from the Las Cumbres Observatory Global Telescope (LCOGT) Network's Active Galactic Nuclei Key Project, a large program devoted to using the robotic re…
Resolving the extended stellar halos of nearby galaxies: the wide-field PISCeS survey
D. Crnojević, D. J. Sand, N. Caldwell +6
In the wide-field Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS), we investigate the resolved stellar halos of two nearby galaxies (the elliptical Centaurus A and the…
Evidence That Hydra I is a Tidally Disrupting Milky Way Dwarf Galaxy
Jonathan R. Hargis, B. Kimmig, B. Willman +6
The Eastern Banded Structure (EBS) and Hydra~I halo overdensity are very nearby (d 10 kpc) objects discovered in SDSS data. Previous studies of the region have shown that EB…
Antlia B: A faint dwarf galaxy member of the NGC 3109 association
D. J. Sand, K. Spekkens, D. Crnojević +4
We report the discovery of Antlia B, a faint dwarf galaxy at a projected distance of 72 kpc from NGC 3109 (15 mag), the primary galaxy of the NGC 3109 dwarf a…