New Hubble space telescope discoveries of type Ia supernovae at z≥ 1: narrowing constraints on the early behavior of dark energy

AG Riess, LG Strolger, S Casertano… - The Astrophysical …, 2007 - iopscience.iop.org
We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope
(HST) and have used them to trace the history of cosmic expansion over the last 10 billion yr …

The Carnegie Supernova Project: first near-infrared Hubble diagram to z∼ 0.7

WL Freedman, CR Burns, MM Phillips… - The Astrophysical …, 2009 - iopscience.iop.org
ABSTRACT The Carnegie Supernova Project (CSP) is designed to measure the luminosity
distance for Type Ia supernovae (SNe Ia) as a function of redshift, and to set observational …

SNLS spectroscopy: testing for evolution in type Ia supernovae

TJ Bronder, IM Hook, P Astier, D Balam… - Astronomy & …, 2008 - aanda.org
Aims. We present a quantitative study of a new data set of high redshift Type Ia supernovae
spectra, observed at the Gemini telescopes during the first 34 months of the Supernova …

The ESO/VLT 3rd year Type Ia supernova data set from the supernova legacy survey

C Balland, S Baumont, S Basa, M Mouchet… - Astronomy & …, 2009 - aanda.org
Aims. We present 139 spectra of 124 Type Ia supernovae (SNe Ia) that were observed at the
ESO/VLT during the first three years of the Canada-France-Hawaï Telescope (CFHT) …

Quantitative comparison between type Ia supernova spectra at low and high redshifts: a case study

G Garavini, G Folatelli, S Nobili, G Aldering… - Astronomy & …, 2007 - aanda.org
We develop a method to measure the strength of the absorption features in type Ia
supernova (SN Ia) spectra and use it to make a quantitative comparisons between the …

First-year spectroscopy for the sloan digital sky survey-II supernova survey

C Zheng, RW Romani, M Sako, J Marriner… - The Astronomical …, 2008 - iopscience.iop.org
This paper presents spectroscopy of supernovae (SNe) discovered in the first season of the
Sloan Digital Sky Survey-II SN Survey. This program searches for and measures multi-band …

Light curves of five type Ia supernovae at intermediate redshift

R Amanullah, V Stanishev, A Goobar… - Astronomy & …, 2008 - aanda.org
Aims. We present multi-band light curves and distances for five type Ia supernovae at
intermediate redshifts,. Methods. Three telescopes on the Canary Island of La Palma, INT …

PHotometry Assisted Spectral Extraction (PHASE) and identification of SNLS supernovae

S Baumont, C Balland, P Astier, J Guy… - Astronomy & …, 2008 - aanda.org
Aims. We present new extraction and identification techniques for supernova (SN) spectra
developed within the Supernova Legacy Survey (SNLS) collaboration. Methods. The new …

OT 060420: A Seemingly Optical Transient Recorded by All‐Sky Cameras

L Shamir, RJ Nemiroff - … of the Astronomical Society of the Pacific, 2006 - iopscience.iop.org
We report on a∼ 5th magnitude flash detected for approximately 10 minutes by two
CONCAM all‐sky cameras located in Cerro Pachón, Chile, and La Palma, Spain. A third all …

TYPE Ia SNe ALONG REDSHIFT: THE (Si ii) RATIO AND THE EXPANSION VELOCITIES IN INTERMEDIATE-z SUPERNOVAE

G Altavilla, P Ruiz-Lapuente, A Balastegui… - The Astrophysical …, 2009 - iopscience.iop.org
We present a study of intermediate-z Type Ia supernovae (SNe Ia) using empirical physical
diagrams which permit the investigation of those SNe explosions. This information can be …