Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets
M. KowalskiInstitut für Physik, Humboldt-Universität zu Berlin, Newtonstrasse 15, Berlin 12489, GermanyD. RubinDepartment of Physics, University of California Berkeley, Berkeley, CA 94720-7300G. AlderingE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720R. AgostinhoCentro de Astronomia e Astrofísica da Universidade de Lisboa, Observatório Astronómico de Lisboa, Tapada da Ajuda, 1349-018 Lisbon, PortugalAlexis AmadonDSM/DAPNIA, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, FranceR. AmanullahSpace Sciences Laboratory, University of California Berkeley, Berkeley, CA 94720C. BallandLaboratoire de Physique Nucléaire et de Hautes ÉnergiesK. BarbaryDepartment of Physics, University of California Berkeley, Berkeley, CA 94720-7300Guillermo A. BlancAPC, Université Paris 7, 10 rue Alice Domon et Léonie Duquet, 75205 Paris Cedex 13, FrancePeter ChallisCenter for Astrophysics, Harvard University, 60 Garden Street, Cambridge, MA 02138A. ConleyDepartment of Astronomy and Astrophysics, University of Toronto, 60 St. George Street, Toronto, ON M5S 3H8, CanadaN. ConnollyDepartment of Physics, Hamilton College, Clinton, NY 13323R. CovarrubiasObservatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 9110Kyle DawsonE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720Susana E. DeustuaAmerican Astronomical Society, 2000 Florida Avenue, NW, Suite 400, Washington, DC 20009Richard S. EllisCalifornia Institute of Technology, East California Boulevard, Pasadena, CA 91125S. FabbroV. FadeyevDepartment of Physics, University of California Santa Cruz, Santa Cruz, CA 95064Xiaohui FanSteward Observatory, University of Arizona, Tucson, AZ 85721Brian D. FarrisDepartment of Physics, University of Illinois at Urbana-Champaign, 1110 West Green, Urbana, IL 61801-3080G. FolatelliObservatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 9110Brenda FryeDepartment of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, IrelandG. GaraviniDepartment of Physics, Stockholm University, Albanova University Center, S-106 91 Stockholm, SwedenE. L. GatesL. GermanyCentre for Astrophysics and Supercomputing, Swinburne University of Technology, John Street, Hawthorn, VIC 3122, AustraliaG. GoldhaberDepartment of Physics, University of California Berkeley, Berkeley, CA 94720-7300B. GoldmanA. GoobarDepartment of Physics, Stockholm University, Albanova University Center, S-106 91 Stockholm, SwedenD. E. GroomE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720J. HaïssinskiLaboratoire de l’Accélerateur Linéaire, IN2P3-CNRS, Université Paris Sud, B.P. 34, 91898 Orsay Cedex, FranceD. HardinLPNHE, CNRS-IN2P3, University of Paris VI & VII, Paris, FranceI. HookSub-Department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UKS. KentFermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510Alex KimE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720R. A. KnopDepartment of Physics and Astronomy, Vanderbilt University, Nashville, TN 37240C. LidmanEuropean Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19, ChileE. LinderSpace Sciences Laboratory, University of California Berkeley, Berkeley, CA 94720Javier MéndezDepartment of Astronomy, University of Barcelona, Barcelona, SpainJ. MeyersDepartment of Physics, University of California Berkeley, Berkeley, CA 94720-7300G. J. MillerSouthwestern College, Department of Astronomy, 900 Otay Lakes Road, Chula Vista, CA 91910M. MoniezLaboratoire de l’Accélerateur Linéaire, IN2P3-CNRS, Université Paris Sud, B.P. 34, 91898 Orsay Cedex, FranceA. MourãoHeidi Jo NewbergPhysics Department, Rensselaer Polytechnic Institute, SC1C25, Troy, NY 12180S. NobiliDepartment of Physics, Stockholm University, Albanova University Center, S-106 91 Stockholm, SwedenP. NugentE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720R. PainLPNHE, CNRS-IN2P3, University of Paris VI & VII, Paris, FranceO. PerdereauLaboratoire de l’Accélerateur Linéaire, IN2P3-CNRS, Université Paris Sud, B.P. 34, 91898 Orsay Cedex, FranceS. PerlmutterDepartment of Physics, University of California Berkeley, Berkeley, CA 94720-7300M. M. PhillipsLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileV. PrasadE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720R. QuimbyCalifornia Institute of Technology, East California Boulevard, Pasadena, CA 91125N. RegnaultLPNHE, CNRS-IN2P3, University of Paris VI & VII, Paris, FranceJ. RichDSM/DAPNIA, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, FranceEric P. RubensteinAdvanced Fuel Research, Inc., 87 Church Street, East Hartford, CT 06108P. Ruiz‐LapuenteDepartment of Astronomy, University of Barcelona, Barcelona, SpainFilipe Duarte SantosDepartment of Physics, Faculty of Sciences, University of Lisbon, Ed. C8, Campo Grande, 1749-016 Lisbon, PortugalB. E. SchaeferLouisiana State University, Department of Physics and Astronomy, Baton Rouge, LA 70803R. A. SchommerR. C. SmithCerro Tololo Inter-American Observatory, Casilla 603, La Serena, ChileAlicia SoderbergCalifornia Institute of Technology, East California Boulevard, Pasadena, CA 91125A. L. SpadaforaE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720Louis-Gregory StrolgerDepartment of Physics and Astronomy, Western Kentucky University, Bowling Green, KYM. StrovinkDepartment of Physics, University of California Berkeley, Berkeley, CA 94720-7300N. B. SuntzeffDepartment of Physics, Texas A&M University, College Station, TX 77843Norihiro SuzukiE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720R. C. ThomasE. O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720N. A. WaltonInstitute of Astronomy, Madingley Road, Cambridge CB3 0HA, UKL. WangDepartment of Physics, Texas A&M University, College Station, TX 77843W. M. Wood‐VaseyCenter for Astrophysics, Harvard University, 60 Garden Street, Cambridge, MA 02138J. L. YunCentro de Astronomia e Astrofísica da Universidade de Lisboa, Observatório Astronómico de Lisboa, Tapada da Ajuda, 1349-018 Lisbon, Portugal(The Supernova Cosmology Project)
2008en
ABI
Аннотация
We present a new compilation of Type Ia supernovae (SNe Ia), a new dataset of low-redshift nearby-Hubble-flow SNe and new analysis procedures to work with these heterogeneous compilations. This “Union ” compilation of 414 SN Ia, which reduces to 307 SNe after selection cuts, includes the recent large samples of SNe Ia from the Supernova Legacy Survey and ESSENCE Survey, the older datasets, as well as the recently extended dataset of distant supernovae observed with HST. A single, consistent and blind analysis procedure is used for all the various SN Ia subsamples, and a new procedure is implemented that consistently weights the heterogeneous data sets and rejects outliers. We present the latest results from this Union compilation and discuss the cosmological constraints from this new compilation and its combination with other cosmological measurements (CMB and BAO). The constraint we obtain from supernovae on the dark energy density is ΩΛ = 0.713 +0.027
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