The Union2 Supernova Compilation: Construction and Cosmology

Details The Union2 Supernova Compilation: Construction and Cosmology The Union2 Supernova Compilation: Construction and Cosmology

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21546101r&link_type=abstract

American Astronomical Society, AAS Meeting #215, #461.01; Bulletin of the American Astronomical Society, Vol. 42, p.491

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We present updates to the Union compilation, including several new datasets and new systematic error treatment. The dominant systematic error is calibration, particularly for supernovae with only two bands. We improve the cosmological constraints from the original Union compilation by about 10-30%, including systematic errors. However, no real constraint can be placed on w above redshift 1.
This work has been supported by the Office of Science, U.S. Department of Energy, through contract DE-AC02-05CH11231 and in part by NASA through grants associated with HST-GO-10496.

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