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Caught in the act: The identification of the galaxies responsible for the faint blue excess
Simon P. Driver, Rogier A. Windhorst, Richard E. Griffiths
We summarise recent Hubble Space Telescope results on the morphology of faint field galaxies. Our two principle results are: (1) the galaxies responsible for the faint blue excess…
Morphological number-counts from the ultradeep HST images
Simon P. Driver, Rogier A. Windhorst, Richard E. Griffiths
We discuss the observations leading to the Faint Blue Galaxy problem and the uncertainties upon which faint galaxy models are based. Using deep Hubble Space Telescope (HST) imaging…
The morphological mix of field galaxies to I=24.25 magnitudes (b=26 magnitudes) from a deep Hubble Space Telescope WFPC2 image
Simon P. Driver, Rogier A. Windhorst, Eric J. Ostrander +3
We determine the morphological mix of field galaxies down to mag ( mag) from a single ultradeep HST WFPC2 image in both the and $I_{81…
The Contribution of Late-type/Irregulars to the Faint Galaxy Counts from HST Medium Deep Survey Images
Simon P. Driver, Rogier A. Windhorst, Richard E. Griffiths
We present a complete morphologically classified sample of 144 faint field galaxies from the HST Medium Deep Survey with 20.0 < I <22.0 mag. We compare the global properties of the…
The discovery of a high redshift type 2 QSO
O. Almaini, B. J. Boyle, R. E. Griffiths +3
We report the discovery of a high redshift, narrow emission-line galaxy identified in the optical follow-up of deep ROSAT fields. The object has a redshift of z=2.35 and its narrow…
New "Einstein Cross" Gravitational Lens Candidates in HST WFPC2 Survey Images
Kavan U. Ratnatunga, Eric J. Ostrander, Richard E. Griffiths +1
We report the serendipitous discovery of ``Einstein cross'' gravitational lens candidates using the Hubble Space Telescope. We have so far discovered two good examples of such lens…
The morphological identification of the rapidly evolving population of faint galaxies
Karl Glazebrook, Richard Ellis, Basilio Santiago +1
The excess numbers of blue galaxies at faint magnitudes are a long-standing cosmological puzzle. We present new number-magnitude counts as a function of galactic morphology from th…