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The ACS Survey of Galactic Globular Clusters: M54 and Young Populations in the Sagittarius Dwarf Spheroidal Galaxy
Michael H. Siegel, Aaron Dotter, Steven R. Majewski +11
We present new Hubble Space Telescope photometry of the massive globular cluster M54 (NGC 6715) and the superposed core of the tidally disrupted Sagittarius (Sgr) dSph galaxy as pa…
The Origin of the Magellanic Stream and Its Leading Arm
David L. Nidever, Steven R. Majewski, W. Butler Burton
We explore the Magellanic Stream (MS) using a Gaussian decomposition of the HI velocity profiles in the Leiden-Argentine-Bonn (LAB) all-sky HI survey. This decomposition exposes th…
Exploring Halo Substructure with Giant Stars: The Dynamics and Metallicity of the Dwarf Spheroidal in Bootes
Ricardo R. Munoz, Jeffrey L. Carlin, Peter M. Frinchaboy +3
We report the results of a spectroscopic study of the Bootes (Boo) dwarf spheroidal (dSph) galaxy carried out with the WIYN telescope and the Hydra multifiber spectrograph. Radial…
Exploring Halo Substructure with Giant Stars XI: The Tidal Tails of the Carina Dwarf Spheroidal and the Discovery of Magellanic Cloud Stars in the Carina Foreground
Ricardo R. Munoz, Steven R. Majewski, Simone Zaggia +10
A new large-area Washington M,T_2+DDO51 filter survey of more than 10 deg^2 around the Carina dSph galaxy reveals a spectroscopically confirmed power law radial density "break" pop…
Constraining the difference in convective blueshift between the components of alpha Cen with precise radial velocities
D. Pourbaix, D. Nidever, C. McCarthy +12
New radial velocities of alpha Cen A & B obtained in the framework the Anglo-Australian Planet Search programme as well as in the CORALIE programme are added to those by Endl et al…
Radial Velocities for 889 Late-type Stars
David L. Nidever, Geoffrey W. Marcy, R. Paul Butler +2
We report radial velocities for 844 FGKM-type main sequence and subgiant stars and 45 K giants, most of which had either low-precision velocity measurements or none at all. These v…