THE SEVENTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY
- K. Abazajian, J. Adelman-McCarthy, D. Zucker
- Physics
- 3 December 2008
A series of improvements to the spectroscopic reductions are described, including better flat fielding and improved wavelength calibration at the blue end, better processing of objects with extremely strong narrow emission lines, and an improved determination of stellar metallicities.
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- A. Riess, A. Filippenko, J. Tonry
- Physics
- 15 May 1998
We present spectral and photometric observations of 10 Type Ia supernovae (SNe Ia) in the redshift range 0.16 ≤ z ≤ 0.62. The luminosity distances of these objects are determined by methods that…
A 2.4% DETERMINATION OF THE LOCAL VALUE OF THE HUBBLE CONSTANT
We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant from 3.3% to 2.4%. The bulk of this improvement comes…
A 3% SOLUTION: DETERMINATION OF THE HUBBLE CONSTANT WITH THE HUBBLE SPACE TELESCOPE AND WIDE FIELD CAMERA 3
- A. Riess, L. Macri, R. Chornock
- Physics
- 15 March 2011
We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to determine the Hubble constant from optical and infrared observations of over 600 Cepheid variables in the host galaxies of…
Type Ia Supernova Discoveries at z > 1 from the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
- A. Riess, L. Strolger, Z. Tsvetanov
- Physics
- 23 February 2004
We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current…
The Great Observatories Origins Deep Survey: Initial Results from Optical and Near-Infrared Imaging
- M. Giavalisco, H. Ferguson, C. Wolf
- Physics
- 3 September 2003
This special issue of the Astrophysical Journal Letters is dedicated to presenting initial results from the Great Observatories Origins Deep Survey (GOODS) that are primarily, but not exclusively,…
Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics beyond ΛCDM
- A. Riess, S. Casertano, W. Yuan, L. Macri, D. Scolnic
- PhysicsAstrophysical Journal
- 18 March 2019
We present an improved determination of the Hubble constant from Hubble Space Telescope (HST) observations of 70 long-period Cepheids in the Large Magellanic Cloud (LMC). These were obtained with the…
The Sixth Data Release of the Sloan Digital Sky Survey
- J. Adelman-McCarthy, M. Agüeros, D. Zucker
- Physics
- 23 July 2007
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and…
Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples
- M. Betoule, R. Kessler, C. Wheeler
- Physics
- 16 January 2014
Aims. We present cosmological constraints from a joint analysis of type Ia supernova (SN Ia) observations obtained by the SDSS-II and SNLS collaborations. The dataset includes several low-redshift…
New Hubble Space Telescope Discoveries of Type Ia Supernovae at z ≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy
- A. Riess, L. Strolger, D. Stern
- Physics
- 17 November 2006
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. These objects,…
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