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The Luminosity Functions of the Galaxy Cluster MS1054-0321 at z=0.83 based on ACS Photometry
Tomotsugu Goto, Marc Postman, Nicholas J. G. Cross +41
We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z=0.83 cl…
The Transformation of Cluster Galaxies at Intermeidate Redshift
N. L. Homeier, R. Demarco, P. Rosati +17
We combine imaging data from the Advanced Camera for Surveys (ACS) with VLT/FORS optical spectroscopy to study the properties of star-forming galaxies in the z=0.837 cluster CL0152…
A Resolved Debris Disk around the G2V star HD 107146
D. R. Ardila, D. A. Golimowski, J. E. Krist +6
We present resolved scattered-light images of the debris disk around HD 107146, a G2 star 28.5 pc from the Sun. This is the first debris disk to be resolved in scattered light arou…
Dust and Ionized Gas in Nine Nearby Early-Type Galaxies Imaged with the HST Advanced Camera for Surveys
A. R. Martel, H. C. Ford, L. D. Bradley +6
We present and continuum images and H+[N II] maps of nine early-type galaxies observed with the Wide Field Channel of the Advanced Camera for Surveys on the Hubble Space…
The Nature of Blue Cores in Spheroids: a Possible Connection with AGN and Star Formation
Felipe Menanteau, Andre R. Martel, Paolo Tozzi +9
We investigate the physical nature of blue cores in early-type galaxies through the first multi-wavelength analysis of a serendipitously discovered field blue-nucleated spheroid in…
HST/ACS Coronagraphic Imaging of the AU Microscopii Debris Disk
John E. Krist, D. R. Ardila, D. A. Golimowski +5
We present {\it Hubble Space Telescope} Advanced Camera for Surveys multicolor coronagraphic images of the recently discovered edge-on debris disk around the nearby ( pc) M…