1.6k citations · 8.2k across the 175 of their papers we have counts for
24 papers · 1 filter
Rotation on sub-kpc scales in the strongly lensed z~3 'arc&core' and implications for high-redshift galaxy dynamics
N. P. H. Nesvadba, M. D. Lehnert, B. L. Frye
Strongly lensed galaxies at high redshift provide a unique window into the early universe. We compare the internal kinematics of the strongly lensed Lyman-break galaxy (LBG) 'arc&c…
Observations of the Gas Reservoir around a Star Forming Galaxy in the Early Universe
Brenda L. Frye, David. V. Bowen, Mairead Hurley +8
We present a high signal-to-noise spectrum of a bright galaxy at z = 4.9 in 14 h of integration on VLT FORS2. This galaxy is extremely bright, i_850 = 23.10 +/- 0.01, and is strong…
Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
M. Kowalski, D. Rubin, G. Aldering +67
We present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compi…
LensPerfect: Gravitational Lens Massmap Reconstructions Yielding Exact Reproduction of All Multiple Images
D. Coe, E. Fuselier, N. Benitez +3
We present a new approach to gravitational lens massmap reconstruction. Our massmap solutions perfectly reproduce the positions, fluxes, and shears of all multiple images. And each…
Discovery of a Very Bright Strongly-Lensed Galaxy Candidate at z ~ 7.6
L. D. Bradley, R. J. Bouwens, H. C. Ford +11
Using HST and Spitzer IRAC imaging, we report the discovery of a very bright strongly lensed Lyman break galaxy (LBG) candidate at z~7.6 in the field of the massive galaxy cluster…
The Sextet Arcs: a Strongly Lensed Lyman Break Galaxy in the ACS Spectroscopic Galaxy Survey towards Abell 1689
B. L. Frye, D. Coe, D. V. Bowen +11
We present results of the HST Advanced Camera for Surveys spectroscopic ground-based redshift survey in the field of A1689. We measure 98 redshifts, increasing the number of spectr…
High Metallicity, Photoionised Gas in Intergalactic Large-Scale Filaments
Bastien Aracil, Todd M. Tripp, David V. Bowen +3
We present high-resolution UV spectra of absorption-line systems toward the low-z QSO HS0624+6907 (z=0.3700). Coupled with spectroscopic galaxy redshifts, we find that many of thes…
Spectroscopic Observations and Analysis of the Unusual Type Ia SN 1999ac
The Supernova Cosmology Project, :, G. Garavini +55
We present optical spectra of the peculiar Type Ia supernova (SN Ia) 1999ac. The data extend from -15 to +42 days with respect to B-band maximum and reveal an event that is unusual…
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…
Strong Lensing Analysis of A1689 from Deep Advanced Camera Images
Tom Broadhurst, Narciso Benitez, Dan Coe +6
We analyse deep multi-colour Advanced Camera images of the largest known gravitational lens, A1689. Radial and tangential arcs delineate the critical curves in unprecedented detail…
Spectroscopic Observations and Analysis of the Peculiar SN 1999aa
G. Garavini, G. Folatelli, A. Goobar +55
We present an extensive new time-series of spectroscopic data of the peculiar SN 1999aa in NGC 2595. Our data set includes 25 optical spectra between -11 and +58 days with respect…
A Search for H-alpha Absorption in the Exosphere of the Transiting Extrasolar Planet HD 209458b
Joshua N. Winn, Yasushi Suto, Edwin L. Turner +5
There is evidence that the transiting planet HD 209458b has a large exosphere of neutral hydrogen, based on a 15% decrement in Lyman-alpha flux that was observed by Vidal-Madjar et…
A Lyman-alpha-only AGN from the Sloan Digital Sky Survey
Patrick B. Hall, Erik A. Hoversten, Christy A. Tremonti +7
The Sloan Digital Sky Survey has discovered a z=2.4917 radio-loud active galactic nucleus (AGN) with a luminous, variable, low-polarization UV continuum, H I two-photon emission, a…
Spectral Evidence for Widespread Galaxy Outflows at z>4
Brenda Frye, Tom Broadhurst, Narciso Benitez
We present discovery spectra of a sample of eight lensed galaxies at high redshift, 3.7<z<5.2, selected by their red colors in the fields of four massive clusters: A1689, A2219, A2…
Near-infrared Spectroscopy and HST Imaging of a Dusty Starburst ERO
Graham P. Smith, Tommaso Treu, Richard Ellis +3
We present near-IR spectroscopy and HST imaging of EROJ164023, an Extremely Red Object (ERO) with R-K=5.9 at z=1.05. EROJ164023 is a disk galaxy, with an optical/IR spectral energy…
Spatially Resolved Millimeter Spectroscopy of the Gravitational Lens PKS 1830-211
J. Swift, W. J. Welch, B. Frye
This paper presents data from the BIMA interferometer showing spatially resolved absorption spectra of the gravitationally lensed quasar PKS 1830-211. High-resolution (1.2 km/s) sp…
Resolving the Stellar Populations in a z=4 Lensed Galaxy
Andrew J. Bunker, Leonidas A. Moustakas, Marc Davis
We present deep near-infrared Keck/NIRC imaging of a recently-discovered z=4.04 galaxy (Frye & Broadhurst 1998). This is lensed by the rich foreground cluster Abell~2390 (z~0.23) i…
The redshift of the gravitationally lensed radio source PKS1830-211
C. Lidman, F. Courbin, G. Meylan +3
We report on the spectroscopic identification and the long awaited redshift measurement of the heavily obscured, gravitationally lensed radio source PKS 1830-211, which was first o…
A Spectroscopic Redshift for the Cl0024+16 Multiple Arc System: Implications for the Central Mass Distribution
Tom Broadhurst, Xiaosheng Huang, Brenda Frye +1
We present a spectroscopic redshift of z=1.675 for the well-known multiply lensed system of arcs seen in the z=0.39 cluster Cl0024+16. In contrast to earlier work, we find that the…
Image Deconvolution of the Radio Ring PKS 1830-211
F. Courbin, C. Lidman, B. Frye +4
New high quality Keck and ESO images of PKS 1830-211 are presented. Applying a powerful new deconvolution algorithm to these optical and infrared data, both images of the flat spec…
Keck Spectroscopy of Giant Arcs in Abell 2390
B. L. Frye, T. J. Broadhurst, H. Spinrad +1
We present new Keck observations of giant arcs in the cluster Abell 2390. High resolution two-dimensional spectra of two arcs show metal lines at z=4.040 +/- 0.005 with Lyman-alpha…
BIMA and Keck Imaging of the Radio Ring PKS 1830-211
B. L. Frye, F. Courbin, T. Broadhurst +5
We discuss BIMA (Berkeley Illinois Maryland Association) data and present new high quality optical and near-IR Keck images of the bright radio ring PKS 1830-211. Applying a powerfu…
Discovery of Red Selected Arcs at z=4.04 behind Abell 2390
Brenda Frye, Tom Broadhurst
We describe the properties of a system of red arcs discovered at z=4.04 around the cluster A2390 (). These arcs are images of a single galaxy, where the lensing is compound…
Redshifted molecular absorption systems towards PKS1830-211 and B0218+357: submillimeter CO, CI and H2O data
M. Gerin, T. G. Phillips, D. J. Benford +3
We have detected the J=4-3 rotational transition of 12CO in absorption at z=0.89 towards the quasar PKS1830-211, but not the 12CO 5-4 or the 3P1-3P0 fine structure line of neutral…