The Top 10 List of Gravitational Lens Candidates from the [ITAL]HUBBLE SPACE TELESCOPE[/ITAL] Medium Deep Survey

1999 ◽  
Vol 117 (5) ◽  
pp. 2010-2023 ◽  
Author(s):  
Kavan U. Ratnatunga ◽  
Richard E. Griffiths ◽  
Eric J. Ostrander
Keyword(s):  
Hubble Space Telescope ◽  
Gravitational Lens ◽  
Space Telescope ◽  
Deep Survey

scholarly journals New “Einstein Cross” Gravitational Lens Candidates In HST WFPC2 Survey Images

1996 ◽  
Vol 173 ◽  
pp. 323-328 ◽  
Author(s):  
K.U. Ratnatunga ◽  
E.J. Ostrander ◽  
R.E. Griffiths ◽  
M. Im
Keyword(s):  
High Resolution ◽  
Hubble Space Telescope ◽  
Elliptical Galaxy ◽  
Broad Band ◽  
Gravitational Lens ◽  
Space Telescope ◽  
Symmetric Configuration ◽  
Band Filter ◽  
Deep Survey ◽  
Random Survey

We report the serendipitous discovery of quadruple gravitational lens candidates using the Hubble Space Telescope. We have so far discovered two good examples of such lenses, each in the form of four faint blue images located in a symmetric configuration around a red elliptical galaxy. The high resolution of HST has facilitated the discovery of this optically selected sample of faint lenses with small (∼1″) separations between the (I∼ 25–27) lensed components and the much brighter (I∼ 19–22) lensing galaxies. The sample has been discovered in the routine processing of HST fields through the Medium Deep Survey pipeline, which fits simple galaxy models to broad band filter images of all objects detected in random survey fields using WFPC2.

The Hubble Space Telescope Medium Deep Survey with the Wide Field and Planetary Camera. 1: Methodology and results on the field near 3C 273

1994 ◽  
Vol 437 ◽  
pp. 67 ◽  
Author(s):  
R. E. Griffiths ◽  
K. U. Ratnatunga ◽  
L. W. Neuschaefer ◽  
S. Casertano ◽  
M. Im ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Wide Field ◽  
Space Telescope ◽  
Deep Survey

Hubble Space Telescope imaging of the large-redshift gravitational lens candidate 1208 + 1011

1992 ◽  
Vol 392 ◽  
pp. L1 ◽  
Author(s):  
John N. Bahcall ◽  
Dan Maoz ◽  
Donald P. Schneider ◽  
Brian Yanny ◽  
Rodger Doxsey
Keyword(s):  
Hubble Space Telescope ◽  
Gravitational Lens ◽  
Space Telescope ◽  
Large Redshift

scholarly journals Disk and Bulge Morphology of WFPC2 Galaxies: The [ITAL]HUBBLE SPACE TELESCOPE[/ITAL] Medium Deep Survey Database

1999 ◽  
Vol 118 (1) ◽  
pp. 86-107 ◽  
Author(s):  
Kavan U. Ratnatunga ◽  
Richard E. Griffiths ◽  
Eric J. Ostrander
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope ◽  
Deep Survey

scholarly journals [ITAL]Hubble Space Telescope[/ITAL] Imaging Polarimetry of the Gravitational Lens FSC 10214+4724

1999 ◽  
Vol 117 (2) ◽  
pp. 671-676 ◽  
Author(s):  
Hien T. Nguyen ◽  
Peter R. Eisenhardt ◽  
Michael W. Werner ◽  
Robert Goodrich ◽  
David W. Hogg ◽  
...  
Keyword(s):  
Hubble Space Telescope ◽  
Gravitational Lens ◽  
Space Telescope ◽  
Imaging Polarimetry

[ITAL]Hubble Space Telescope[/ITAL] Observations of the Gravitational Lens System B1422+231

1996 ◽  
Vol 462 (2) ◽  
Author(s):  
C. D. Impey ◽  
C. B. Foltz ◽  
C. E. Petry ◽  
I. W. A. Browne ◽  
A. R. Patnaik
Keyword(s):  
Hubble Space Telescope ◽  
Gravitational Lens ◽  
Lens System ◽  
Space Telescope

scholarly journals Outside the Lyman-break box: detecting Lyman continuum emitters at 3.5 < z < 5.1 with CLAUDS

2020 ◽  
Vol 494 (4) ◽  
pp. 4986-5007 ◽  
Author(s):  
U Meštrić ◽  
E V Ryan-Weber ◽  
J Cooke ◽  
R Bassett ◽  
M Sawicki ◽  
...  
Keyword(s):  
Intergalactic Medium ◽  
Hubble Space Telescope ◽  
High Redshift ◽  
Large Area ◽  
Redshift Range ◽  
Space Telescope ◽  
High Redshift Galaxies ◽  
Lyman Continuum ◽  
Deep Survey ◽  
Individual Galaxies

ABSTRACT Identifying non-contaminated sample of high-redshift galaxies with escaping Lyman continuum (LyC) flux is important for understanding the sources and evolution of cosmic reionization. We present CLAUDS (CFHT Large Area u-band deep survey) u-band photometry of the COSMOS field to probe LyC radiation from spectroscopically confirmed galaxies at $z$ ≥ 3.5 and outside the standard Lyman-break galaxy colour-selection expectations. Complementary to the CLAUDS data, we use Subaru multifilter photometry, Hubble Space Telescope (HST) multifilter imaging, and the spectroscopic surveys D10K, VUDS, and 3D-HST. We present a sample of Lyman continuum galaxy (LCG) candidates in the redshift range 3.5 ≲ $z$ ≲ 5.1. Here, we introduce 5 LCG candidates, where two are flagged quality 1 and three quality 2. The estimated $f_{\rm esc}^{\rm abs}$ for quality 1 candidates are in the range $\sim 5 - 73{{\ \rm per\ cent}}$ and $\sim 30 - 93{{\ \rm per\ cent}}$. These estimates are based on our derived parameters from individual galaxies as inputs to a range of BPASS models as well as mean intergalactic medium (IGM) and maximal intergalactic and circumgalactic media (IGM+CGM) transmission. We conclude that our search for LCGs is most likely biased to lines of sight with low H i densities or free from Lyman limit systems. Our two best LCG candidates have EW (Lyα) ≤ 50 Å and we find no correlation or anticorrelation between EW (Lyα), $f_{\rm esc}^{\rm abs}$, and Robs, the ratio of ionizing to non-ionizing observed flux in the measured passbands. Stacking candidates without solid LyC detections (S/N &lt; 3) results in an estimated $f_{\rm esc}^{\rm abs}$ from galaxies not greater than $1{{\ \rm per\ cent}}$.

Galaxy Clustering Statistics of Hubble Space Telescope Medium Deep Survey WF/PC Images

1995 ◽  
Vol 453 ◽  
pp. 559 ◽  
Author(s):  
L. W. Neuschaefer ◽  
K. U. Ratnatunga ◽  
R. E. Griffiths ◽  
S. Casertano ◽  
M. Im
Keyword(s):  
Hubble Space Telescope ◽  
Galaxy Clustering ◽  
Space Telescope ◽  
Deep Survey

Hubble Space Telescope Wide Field Camera imaging of the gravitational lens 2237 + 0305

1992 ◽  
Vol 104 ◽  
pp. 959 ◽  
Author(s):  
Hans-Walter Rix ◽  
Donald P. Schneider ◽  
John N. Bahcall
Keyword(s):  
Hubble Space Telescope ◽  
Gravitational Lens ◽  
Wide Field ◽  
Space Telescope ◽  
Camera Imaging

Cosmic Gravitational Shear from the Hubble Space Telescope Medium Deep Survey

2003 ◽  
Vol 598 (2) ◽  
pp. L71-L74 ◽  
Author(s):  
Stefano Casertano ◽  
Kavan U. Ratnatunga ◽  
Richard E. Griffiths
Keyword(s):  
Hubble Space Telescope ◽  
Space Telescope ◽  
Deep Survey
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