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The Great Observatories Origins Deep Survey. VLT/FORS2 Spectroscopy in the GOODS-South Field: Part III
E. Vanzella, S. Cristiani, M. Dickinson +15
Aims. We present the full data set of the spectroscopic campaign of the ESO/GOODS program in the GOODS-South field, obtained with the FORS2 spectrograph at the ESO/VLT. Method. Obj…
A Population of Massive and Evolved Galaxies at z$\ga$5
T. Wiklind, M. Dickinson, H. C. Ferguson +4
We report results from a search for massive and evolved galaxies at z>5 in the GOODS southern field. Combining HST ACS, VLT ISAAC and Spitzer IRAC photometric data, we develop a co…
Stellar populations across the NGC4244 truncated galactic disk
Roelof S. de Jong, A. C. Seth, D. J. Radburn-Smith +12
We use HST/ACS to study the resolved stellar populations of the nearby, nearly edge-on galaxy NGC4244 across its outer disk surface density break. The stellar photometry allows us…
New Constraints on the Lyman Continuum Escape Fraction at z~1.3
Brian Siana, Harry I. Teplitz, James Colbert +8
We examine deep far-ultraviolet (1600 Angstrom) imaging of the Hubble Deep Field-North (HDFN) and the Hubble Ultra Deep Field (HUDF) to search for leaking Lyman continuum radiation…
The UDF05 Follow-up of the HUDF: I. The Faint-End Slope of the Lyman-Break Galaxy Population at z~5
P. A. Oesch, M. Stiavelli, C. M. Carollo +14
We present the UDF05 project, a HST Large Program of deep ACS (F606W, F775W, F850LP) and NICMOS (F110W, F160W) imaging of three fields, two of which coincide with the NICP1-4 NICMO…
The Survey for Ionization in Neutral-Gas Galaxies: III. Diffuse, Warm Ionized Medium and Escape of Ionizing Radiation
M. S. Oey, G. R. Meurer, S. Yelda +7
We use the first data release from the SINGG H-alpha survey of HI-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM) across the range of…
The Extended Star Formation History of the Andromeda Spheroid at Twenty One Kiloparsecs on the Minor Axis
Thomas M. Brown, Ed Smith, Henry C. Ferguson +8
Using the HST ACS, we have obtained deep optical images of a southeast minor-axis field in the Andromeda Galaxy, 21 kpc from the nucleus. In both star counts and metallicity, this…
Short-Period Variables in the Local Group Dwarf Galaxies Tucana and LGS3
E. J. Bernard, M. Monelli, C. Gallart +16
We present preliminary results concerning the search for short-period variable stars in Tucana and LGS3 based on very deep HST/ACS imaging. In the fraction of the observed field we…