Publications (33)
Galaxies Under the Cosmic Microscope: Resolved Spectroscopy and New Constraints on the z=1 Tully-Fisher relation
M. Swinbank, R. Bower, G. P. Smith +5
We exploit the gravitational potential of massive cluster lenses to probe the emission line properties of six z=1 galaxies which appear as highly magnified luminous arcs. Using the…
K Corrections For Type Ia Supernovae and a Test for Spatial Variation of the Hubble Constant
A. Kim, S. Deustua, S. Gabi +23
Cross-filter K corrections for a sample of "normal" Type Ia supernovae (SNe) have been calculated for a range of epochs. With appropriate filter choices, the combined statistical a…
ALMA detection of [CII] 158 micron emission from a strongly lensed z=2 star-forming galaxy
D. Schaerer, F. Boone, T. Jones +9
Our objectives are to determine the properties of the interstellar medium (ISM) and of star-formation in typical star-forming galaxies at high redshift. Following up on our previou…
The 2dF Galaxy Redshift Survey: The b_J-band galaxy luminosity function and survey selection function
P. Norberg, S. Cole, C. Baugh +25
We use more than 110500 galaxies from the 2dF galaxy redshift survey (2dFGRS) to estimate the b_J-band galaxy luminosity function at redshift z=0, taking account of evolution, the…
A faint galaxy redshift survey to B=24
K. Glazebrook, R. Ellis, M. Colless +3
Using the multislit LDSS-2 spectrograph on the {\it William Herschel Telescope} we have completed a redshift survey in the magnitude range which has produced 73 redshi…
Timescale Stretch Parameterization of Type Ia Supernova B-band Light Curves
G. Goldhaber, D. E. Groom, A. Kim +24
R-band intensity measurements along the light curve of Type Ia supernovae discovered by the Supernova Cosmology Project (SCP) are fitted in brightness to templates allowing a free…
A molecular line scan in the Hubble Deep Field North
R. Decarli, F. Walter, C. Carilli +20
We present a molecular line scan in the Hubble Deep Field North (HDF-N) that covers the entire 3mm window (79-115 GHz) using the IRAM Plateau de Bure Interferometer. Our CO redshif…
The Intense Starburst HDF850.1 in a Galaxy Overdensity at z=5.2 in the Hubble Deep Field
Fabian Walter, R. Decarli, C. Carilli +24
The Hubble Deep Field (HDF) is a region in the sky that provides one of the deepest multi-wavelength views of the distant universe and has led to the detection of thousands of gala…
Supernova / Acceleration Probe: A Satellite Experiment to Study the Nature of the Dark Energy
SNAP Collaboration, G. Aldering, W. Althouse +109
The Supernova / Acceleration Probe (SNAP) is a proposed space-based experiment designed to study the dark energy and alternative explanations of the acceleration of the Universe's…
Spectroscopic confirmation of high-redshift supernovae with the ESO VLT
C. Lidman, D. A. Howell, G. Folatelli +44
We present VLT FORS1 and FORS2 spectra of 39 candidate high-redshift supernovae that were discovered as part of a cosmological study using Type Ia supernovae (SNe Ia) over a wide r…
VLT Spectroscopy of Galaxies Lensed by Abell AC114: Implication for the Mass Model and the Study of Low-Luminosity Galaxies at High-Redshift
L. E. Campusano, R. Pello, J. -P. Kneib +5
We present the first results of a spectroscopic survey of faint lensed galaxie s in the core of the galaxy cluster AC114 (z=0.312) obtained from observations w ith the FORS1 spectr…
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…
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 Molecular Line Scan in the Hubble Deep Field North: Constraints on the CO Luminosity Function and the Cosmic H2 Density
F. Walter, R. Decarli, M. Sargent +19
We present direct constraints on the CO luminosity function at high redshift and the resulting cosmic evolution of the molecular gas density, (z), based on a blind mol…
New telescope designs suitable for massively-multiplexed spectroscopy
L. Pasquini, B. Delabre, R. Ellis +1
We present two novel designs for a telescope suitable for massively-multiplexed spectroscopy. The first is a very wide field Cassegrain telescope optimised for fibre feeding. It pr…
Topological Protection in Disordered Photonic Multilayers and Transmission Lines
D. M. Whittaker, R. Ellis
The Su-Schrieffer-Heeger (SSH) model is the simplest example of a lattice with non-trivial topology. It supports mid-gap topologically protected states, whose energies are unaffect…
Scheduled Discoveries of 7+ High-Redshift Supernovae: First Cosmology Results and Bounds on q_0
S. Perlmutter, S. Deustua, S. Gabi +23
Our search for high-redshift Type Ia supernovae discovered, in its first years, a sample of seven supernovae. Using a "batch" search strategy, almost all were discovered before max…
New Constraints on , , and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
R. A. Knop, G. Aldering, R. Amanullah +45
We report measurements of , , and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of…
The All-wavelength Extended Groth Strip International Survey (AEGIS) Data Sets
M. Davis, P. Guhathakurta, N. Konidaris +53
In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey,…
Observation of Cosmological Time Dilation using Type Ia Supernovae as Clocks
G. Goldhaber, S. Deustua, S. Gabi +23
This work is based on the first results from a systematic search for high redshift Type Ia supernovae. Using filters in the R-band we discovered seven such SNe, with redshift z = 0…
Searches for high redshift galaxies using gravitational lensing
J. Richard, R. Pello, J. -P. Kneib +3
We present different methods used to identify high redshift (z>5) objects in the high-magnification regions of lensing galaxy clusters, taking advantage of very well constrained le…
Early-Type galaxies at z ~ 1.3. III. On the dependence of Formation Epochs and Star Formation Histories on Stellar Mass and Environment
Alessandro Rettura, S. Mei, S. A. Stanford +20
We study the environmental dependence of stellar population properties at z ~ 1.3. We derive galaxy properties (stellar masses, ages and star formation histories) for samples of ma…
The UV/optical spectra of the Type Ia supernova SN 2010jn: a bright supernova with outer layers rich in iron-group elements
S. Hachinger, P. A. Mazzali, M. Sullivan +19
Radiative transfer studies of Type Ia supernovae (SNe Ia) hold the promise of constraining both the time-dependent density profile of the SN ejecta and its stratification by elemen…
A wide field survey of the distant rich cluster CL0024+1654
T. Treu, R. Ellis, P. Trivedi +5
We describe the first results from a comprehensive study of the distant cluster Cl0024+1654 (z=0.39) based upon a pattern of 38 mosaiced HST-WFPC2 images extending to radii ~5Mpc.…
Spectroscopic follow up of arclets in AC114 with the VLT
J. F. Le Borgne, L. Campusano, R. Pello +5
We present the first results on the VLT/FORS-1 spectroscopic survey of amplified sources and multiple images in the lensing cluster AC114. Background sources were selected in the c…
The Swift Gamma-Ray Burst Host Galaxy Legacy Survey - I. Sample Selection and Redshift Distribution
D. A. Perley, T. Krühler, S. Schulze +20
We introduce the Swift Gamma-Ray Burst Host Galaxy Legacy Survey ("SHOALS"), a multi-observatory high-redshift galaxy survey targeting the largest unbiased sample of long-duration…
The Type Ia Supernova Rate at z ~ 0.4
R. Pain, I. Hook, S. Perlmutter +23
We present the first measurement of the rate of Type Ia supernovae at high redshift. The result is derived using a large subset of data from the Supernova Cosmology Project as desc…
A Survey for Supernovae in Massive High-Redshift Clusters
Keren Sharon, A. Gal-Yam, D. Maoz +12
We describe our ongoing program designed to measure the SN-Ia rate in a sample of massive z=0.5-0.9 galaxy clusters. The SN-Ia rate is a poorly known observable, especially at high…
Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~0.5
The Supernova Cosmology Project, :, S. Nobili +35
We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram w…
Strength in Numbers: Red Galaxies Bolster the Cosmic Star Formation Rate Density at z > 3
L. Barrufet, J. S. Dunlop, R. Begley +20
A comprehensive account of the cosmic star-formation history demands an accurate census of dust-enshrouded star formation over cosmic time. We provide strong new constraints from a…
The 2dF Galaxy Redshift Survey: correlation functions, peculiar velocities and the matter density of the Universe
E. Hawkins, S. Maddox, S. Cole +27
We present a detailed analysis of the two-point correlation function, from the 2dF Galaxy Redshift Survey (2dFGRS). We estimate the redshift-space correlation function, xi(s), from…
Mean Halpha+[NII]+[SII] EW Inferred for Star-Forming Galaxies at z=5.1-5.4 Using High-Quality Spitzer/IRAC Photometry
N. Rasappu, R. Smit, I. Labbe +4
Recent Spitzer/InfraRed Array Camera (IRAC) photometric observations have revealed that rest-frame optical emission lines contribute signficantly to the broadband fluxes of high-re…
Spectra of High-Redshift Type Ia Supernovae and a Comparison with their Low-Redshift Counterparts
I. M. Hook, D. A. Howell, G. Aldering +32
We present spectra for 14 high-redshift (0.17 < z < 0.83) supernovae, which were discovered by the Supernova Cosmology Project as part of a campaign to measure cosmological paramet…