Supernova Cosmology Results From Six Years of ESSENCE

Details Supernova Cosmology Results From Six Years of ESSENCE Supernova Cosmology Results From Six Years of ESSENCE

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21348106s&link_type=abstract

American Astronomical Society, AAS Meeting #213, #481.06; Bulletin of the American Astronomical Society, Vol. 41, p.449

Astronomy and Astrophysics

Astronomy

Scientific paper

The ESSENCE project has successfully discovered and observed over 200 SNe Ia during 6 years of observations with the CTIO/NOAO 4.0m telescope with spectroscopic classifications from the Gemini, Magellan, and Keck telescopes. We are currently facing the challenge of solving the remaining systematic uncertainties that have been in discussion for a decade: the proper treatment of host galaxy dust extinction, the intrinsic SN Ia colors, and the luminosity corrections appropriate for each. We will present our final Hubble diagram fit to the ESSENCE data, and our best estimate for the equation of state parameter w, including detailed modeling of the errors, both systematic and statistical.

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