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A detailed study of Andromeda XIX, an extreme local analogue of ultra diffuse galaxies
Michelle L. M. Collins, Erik J. Tollerud, R. Michael Rich +5
With a central surface brightness of mag. per sq. arcsec, and half-light radius of ~kpc, Andromeda XIX (And XIX) is an extremely diffuse…
Comparing the Quenching Times of Faint M31 and Milky Way Satellite Galaxies
Daniel R. Weisz, Nicolas F. Martin, Andrew E. Dolphin +8
We present the star formation histories (SFHs) of 20 faint M31 satellites () that were measured by modeling sub-horizontal branch (HB) depth color-mag…
A Dwarf Disrupting -- Andromeda XXVII and the North West Stream
Janet Preston, Michelle L. M. Collins, Rodrigo A. Ibata +10
We present a kinematic and spectroscopic analysis of 38 red giant branch stars, in 7 fields, spanning the dwarf spheroidal galaxy Andromeda XXVII and the upper segment of the North…
A rogues gallery of Andromeda's dwarf galaxies II. Precise Distances to 17 Faint Satellites
Daniel R. Weisz, Andrew E. Dolphin, Nicolas F. Martin +8
We present new horizontal branch (HB) distance measurements to 17 of the faintest known M31 satellites () based on deep Hubble Space Telescope (HST)…
FOBOS: A Next-Generation Spectroscopic Facility at the W. M. Keck Observatory
K. Bundy, K. Westfall, N. MacDonald +38
High-multiplex and deep spectroscopic follow-up of upcoming panoramic deep-imaging surveys like LSST, Euclid, and WFIRST is a widely recognized and increasingly urgent necessity. N…
The HST Large Programme on NGC 6752. III. Detection of the Peak of the White Dwarf Luminosity Function
L. R. Bedin, M. Salaris, J. Anderson +10
We report on the white dwarf cooling sequence of the old globular cluster NGC 6752, which is chemically complex and hosts a blue horizontal branch. This is one of the last globular…