First cosmology results using type Ia supernovae from the Dark Energy Survey: constraints on cosmological parameters
- Abbott, T. M. C.
- Allam, S.
- Andersen, P.
- Angus, C.
- Asorey, J.
- Avelino, A.
- Avila, S.
- Bassett, B. A.
- Bechtol, K.
- Bernstein, G. M.
- Bertin, E.
- Brooks, D.
- Brout, D.
- Brown, P.
- Burke, D. L.
- Calcino, J.
- Rosell, A. Carnero
- Carollo, D.
- Carrasco Kind, M.
- Carretero, J.
- Casas, R.
- Castander, F. J.
- Cawthon, R.
- Challis, P.
- Childress, M.
- Clocchiatti, A.
- Cunha, C. E.
- D’Andrea, C. B.
- da Costa, L. N.
- Davis, C.
- Davis, T. M.
DOIAbstract
We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe. Ia from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our "DES-SN3YR" result from these 329 SNe. Ia is based on a series of companion analyses and improvements covering SN. Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat Lambda CDM model we find a matter density Omega(m) = 0.331 +/- 0.038. For a flat wCDM model, and combining our SN. Ia constraints with those fro...
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