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An ACS Survey of Globular Clusters V: Star Catalog for Each Cluster
Jay Anderson, Ata Sarajedini, Luigi R. Bedin +10
The ACS Survey of Globular Clusters has used HST's Wide-Field Channel to obtain uniform imaging of 65 of the nearest globular clusters to provide an extensive homogeneous dataset f…
Kinematic and Chemical constraints on the formation of M31's inner and outer halo
A. Koch, R. M. Rich, D. B. Reitzel +8
The halo of M31 shows a wealth of substructures that are consistent with satellite accretion. Here we report on kinematic and abundance results from Keck/DEIMOS spectroscopy in the…
Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest
Stephen C. Unwin, Michael Shao, Angelle M. Tanner +33
Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed usin…
The Ensemble Variability Properties of Faint QSOs
D. Trevese, R. G. Kron, S. R. Majewski +2
A refined sample of 64 variable objects with stellar image structure has been identified in SA 57 to , over a time baseline of 15 years, sampled at 11 distinct epochs.…