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"The Supernova Legacy Survey: measurement
of Omega(M), Omega(Lambda) and w from the first year data set," by P.
Astier and 41 others, Astronomy & Astrophysics, 447(1): 31-U31, 2006.
[Authors' affiliations: 18 institutions
worldwide]
Abstract: "We present distance
measurements to 71 high redshift type Ia supernovae discovered during the
first year of the 5-year Supernova Legacy Survey (SNLS). These events were
detected and their multi-color light-curves measured using the MegaPrime/MegaCam
instrument at the Canada-France-Hawaii Telescope (CFHT), by repeatedly
imaging four one-square degree fields in four bands, as part of the CFHT
Legacy Survey (CFHTLS). Follow-up spectroscopy was performed at the VLT,
Gemini and Keck telescopes to confirm the nature of the supernovae and to
measure their redshift. With this data set, we have built a Hubble diagram
extending to z = 1, with all distance measurements involving at least two
bands. Systematic uncertainties are evaluated making use of the multi-band
photometry obtained at CFHT. Cosmological fits to this first year SNLS
Hubble diagram give the following results: Omega(M) = 0.263 +/- 0.042 (stat)
+/- 0.032 (sys) for a flat Lambda CDM model; and w = -1.023 +/- 0.090 (stat)
+/- 0.054 (sys) for a flat cosmology with constant equation of state w when
combined with the constraint from the recent Sloan Digital Sky Survey
measurement of baryon acoustic oscillations."
This 2006 report from Astronomy &
Astrophysics was cited 33 times in current journal
articles indexed by Thomson Scientific during July-August 2007. Only two
other physics papers published in the last two years (aside from reviews)
collected higher numbers of citations during that two-month period. Prior to
the most recent bimonthly count, citations to the paper have accrued as
follows:
May-June 2007: 34 citations
March-April 2007: 21
January-February 2007: 29
November-December 2006: 22
September-October 2006: 26
July-August 2006: 20
May-June 2006: 5
March-April 2006: 1
Total citations to date: 191
SOURCE: Hot
Papers Database (Included with a subscription to the print newsletter Science
Watch®, available from the
Research Services Group. Packaged on a CD that is mailed with each Science
Watch issue, the Hot
Papers Database contains data on hundreds of highly cited papers published
during the last two years. User interface permits searching by author,
organization, journal, field, and more. Total citations, as well as citations
accrued during successive bimonthly periods, can be assessed and graphed. An
updated CD containing the most recent bimonthly data is mailed with every new
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Watch,
six times a year. The CD also includes an electronic version of the Science
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