|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The ESSENCE Supernova Survey: Survey Optimization, Observations, and Supernova Photometry | | G. Miknaitis
; G. Pignata
; A. Rest
; W. M. Wood-Vasey
; S. Blondin
; P. Challis
; R. C. Smith
; C. W. Stubbs
; N. B. Suntzeff
; R. J. Foley
; T. Matheson
; J. L. Tonry
; C. Aguilera
; J. W. Blackman
; A. C. Becker
; A. Clocchiatti
; R. Covarrubias
; T. M. Davis
; A. V. Filippenko
; A. Garg
; P. M. Garnavich
; M. Hicken
; S. Jha
; K. Krisciunas
; R. P. Kirshner
; B. Leibundgut
; W. Li
; A. Miceli
; G. Narayan
; J. L. Prieto
; A. G. Riess
; M. E. Salvo
; B. P. Schmidt
; J. Sollerman
; J. Spyromilio
; A. Zenteno
; | | Date: |
2 Jan 2007 | | Abstract: | We describe the implementation and optimization of the ESSENCE supernova survey, which we have undertaken to measure the equation of state parameter of the dark energy. We present a method for optimizing the survey exposure times and cadence to maximize our sensitivity to the dark energy equation of state parameter w=P/rho c^2 for a given fixed amount of telescope time. For our survey on the CTIO 4m telescope, measuring the luminosity distances and redshifts for supernovae at modest redshifts (z~0.5 +- 0.2) is optimal for determining w. We describe the data analysis pipeline based on using reliable and robust image subtraction to find supernovae automatically and in near real-time. Since making cosmological inferences with supernovae relies crucially on accurate measurement of their brightnesses, we describe our efforts to establish a thorough calibration of the CTIO 4m natural photometric system. In its first four years, ESSENCE has discovered and spectroscopically confirmed 102 type Ia SNe, at redshifts from 0.10 to 0.78, identified through an impartial, effective methodology for spectroscopic classification and redshift determination. We present the resulting light curves for the all type Ia supernovae found by ESSENCE and used in our measurement of w, presented in Wood-Vasey et al, 2007. | | Source: | arXiv, astro-ph/0701043 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER