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The Union3 Supernova Ia Compilation

AuthorsRubin, David; Aldering, Greg Scott; Amanullah, Rahman; Ruiz-Lapuente, Pilar ; Rykoff, Eli S.; Saunders, Clare; Spadafora, Anthony L.; Suzuki, Nao; Takanashi, Naohiro; Yasuda, Naoki
Issue DateJan-2016
CitationAmerican Astronomical Society, Meeting 227: 139.18 (2016)
227th American Astronomical Society Meeting (2016)
AbstractHigh-redshift supernovae observed with the Hubble Space Telescope (HST) are crucial for constraining any time variation in dark energy. In a forthcoming paper (Rubin+, in prep), we will present a cosmological analysis incorporating existing supernovae with improved calibrations, and new HST-observed supernovae (six above z=1). We combine these data with current literature data, and fit them using SALT2-4 to create the Union3 Supernova compilation. We build on the Unified Inference for Type Ia cosmologY (UNITY) framework (Rubin+ 2015b), incorporating non-linear light-curve width and color relations, a model for unexplained dispersion, an outlier model, and a redshift-dependent host-mass correction.
DescriptionDavid Rubin et al. ; 227th AAS Meeting Kissimmee, FL – January, 2016
Appears in Collections:(CFMAC-IFF) Comunicaciones congresos
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