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…
The Reddening-Free Decline Rate Versus Luminosity Relationship for Type Ia Supernovae
- M. Phillips, P. Lira, N. Suntzeff, R. Schommer, M. Hamuy, J. Maza
- Physics
- 5 July 1999
We develop a method for estimating the host galaxy dust extinction for type Ia supernovae based on an observational coincidence first noted by Lira, who found that the B-V evolution during the period…
New Understanding of Large Magellanic Cloud Structure, Dynamics, and Orbit from Carbon Star Kinematics
- R. P. van der Marel, D. Alves, E. Hardy, N. Suntzeff
- Physics, Geology
- 10 May 2002
We formulate a new and coherent understanding of the structure and dynamics of the Large Magellanic Cloud (LMC) and its orbit around and interaction with the Milky Way. Much of our understanding of…
Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets
- M. Kowalski, D. Rubin, J. Yun
- Physics
- 25 April 2008
We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations. This…
Cosmological Results from High-z Supernovae
- J. Tonry, B. Schmidt, N. Suntzeff
- Physics
- 1 May 2003
The High-z Supernova Search Team has discovered and observed eight new supernovae in the redshift interval z = 0.3-1.2. These independent observations, analyzed by similar but distinct methods,…
BVRI Light Curves for 22 Type Ia Supernovae
- M. Hamuy, M. Phillips, N. Suntzeff, R. Schommer, Jos'e Maza et al
- Physics
- 7 September 1996
We present 1210 Johnson/Cousins B, V, R, and I photometric observations of 22 recent Type Ia supernovae (SNe Ia): SNe 1993ac, 1993ae, 1994M, 1994S, 1994T, 1994Q, 1994ae, 1995D, 1995E, 1995al, 1995ac,…
THE CARNEGIE SUPERNOVA PROJECT: ANALYSIS OF THE FIRST SAMPLE OF LOW-REDSHIFT TYPE-Ia SUPERNOVAE
- G. Folatelli, M. Phillips, Nicole Miller
- Physics
- 1 May 2009
An analysis of the first set of low-redshift (z < 0.08) Type Ia supernovae (SNe Ia) monitored by the Carnegie Supernova Project between 2004 and 2006 is presented. The data consist of well-sampled,…
Spectroscopy of giants in LMC clusters. I. Velocities, abundances, and the age-metallicity relation
- E. Olszewski, R. Schommer, N. Suntzeff, H. Harris
- Geology, Physics
- 1 February 1991
Velocities and equivalent widths are presented for a large sample of LMC clusters. The calcium abundance is found to be a sensitive abundance indicator over a very wide range of (Fe/H) between 0.0…
The Hubble diagram of the Calan/Tololo type IA supernovae and the value of HO
- M. Hamuy, M. Phillips, N. Suntzeff, R. Schommer, J. Maza, R. Avil'es
- Physics
- 7 September 1996
The Calan/Tololo supernova survey has discovered ~30 Type Ia supernovae out to z~0.1. Using BVI data for these objects and nearby SNe Ia, we have shown that there exists a significant dispersion in…
The Chemical Evolution of the Globular Cluster ω Centauri (NGC 5139)
- V. Smith, N. Suntzeff, O. Straniero
- Physics
- 1 March 2000
We present abundances for 22 chemical elements in 10 red giant members of the massive Galactic globular cluster ω Centauri. The spectra are of relatively high spectral resolution and signal-to-noise.…
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