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The High-Z Supernova Search: Measuring Cosmic Deceleration and Global Curvature of the Universe Using Type IA Supernovae

Schmidt, Brian; Suntzeff, Nicholas B; Phillips, M. M.; Schommer, Robert; Clocchiatti, Alejandro; Kirshner, Robert P; Garnavich, Peter M; Challis, Peter M; Leibundgut, Bruno; Spyromilio, Jason; Riess, Adam G.; Filippenko, Alexei V.; Hamuy, Mario; Smith, R. Chris; Hogan, Craig; Stubbs, Christopher; Diercks, Alan; Reiss, David; Gilliland, Ron; Tonry, John; Maza, José; Dressler, A.; Walsh, J.; Ciardullo, R.

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The High-Z Supernova Search is an international collaboration to discover and monitor Type Ia supernovae (SNe Ia) at z > 0.2 with the aim of measuring cosmic deceleration and global curvature. Our collaboration has pursued a basic understanding of supernovae in the nearby universe, discovering and observing a large sample of objects and developing methods to measure accurate distances with SNe Ia. This paper describes the extension of this program to z >= 0.2, outlining our search techniques...[Show more]

dc.contributor.authorSchmidt, Brian
dc.contributor.authorSuntzeff, Nicholas B
dc.contributor.authorPhillips, M. M.
dc.contributor.authorSchommer, Robert
dc.contributor.authorClocchiatti, Alejandro
dc.contributor.authorKirshner, Robert P
dc.contributor.authorGarnavich, Peter M
dc.contributor.authorChallis, Peter M
dc.contributor.authorLeibundgut, Bruno
dc.contributor.authorSpyromilio, Jason
dc.contributor.authorRiess, Adam G.
dc.contributor.authorFilippenko, Alexei V.
dc.contributor.authorHamuy, Mario
dc.contributor.authorSmith, R. Chris
dc.contributor.authorHogan, Craig
dc.contributor.authorStubbs, Christopher
dc.contributor.authorDiercks, Alan
dc.contributor.authorReiss, David
dc.contributor.authorGilliland, Ron
dc.contributor.authorTonry, John
dc.contributor.authorMaza, José
dc.contributor.authorDressler, A.
dc.contributor.authorWalsh, J.
dc.contributor.authorCiardullo, R.
dc.date.accessioned2023-01-19T22:06:37Z
dc.date.available2023-01-19T22:06:37Z
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/1885/283855
dc.description.abstractThe High-Z Supernova Search is an international collaboration to discover and monitor Type Ia supernovae (SNe Ia) at z > 0.2 with the aim of measuring cosmic deceleration and global curvature. Our collaboration has pursued a basic understanding of supernovae in the nearby universe, discovering and observing a large sample of objects and developing methods to measure accurate distances with SNe Ia. This paper describes the extension of this program to z >= 0.2, outlining our search techniques and follow-up program. We have devised high-throughput filters that provide accurate two-color rest frame B and V light curves of SNe Ia, enabling us to produce precise, extinction-corrected luminosity distances in the range 0.25 < z < 0.55. Sources of systematic error from K-corrections, extinction, selection effects, and evolution are investigated, and their effects estimated. We present photometric and spectral observations of SN 1995K, our program's first supernova (SN), and use the data to obtain a precise measurement of the luminosity distance to the z = 0.479 host galaxy. This object, when combined with a nearby sample of SNe, yields an estimate for the matter density of the universe of ΩM=-0.2+1.0-0.8 if ΩΛ = 0. For a spatially flat universe composed of normal matter and a cosmological constant, we find ΩM=0.4+0.5-0.4, ΩΛ=0.6+0.4-0.5. We demonstrate that with a sample of ~30 objects, we should be able to determine relative luminosity distances over the range 0 < z < 0.5 with sufficient precision to measure ΩM with an uncertainty of +/-0.2.
dc.description.sponsorshipWe wish to thank Ed Carter at NOAO for tracing the redshifted Ðlter set. A. V. F. acknowledges support from NSF grant AST 94-17213. R. P. K. acknowledges support from NSF grants AST 95-28899 and AST 96 17058 and thanks the Institute for Theoretical Physics, University of California, Santa Barbara, for their generous hospitality. A. G. R. acknowledges support from the Miller Institute for Basic Research in Science, University of California, Berkeley. SN research at UW is supported by the NSF and NASA. C. W. S. acknowledges the generous support of the Seaver Institute and the Packard Foundation. M. H. acknowledges support provided for this work by the NSF through grant number GF-1002-97 from the Association of Universities for Research in Astronomy, Inc., under NSF Cooperative Agreement No. AST 89-47990, and from Fundacio n Andes under project C-12984; M. H. also acknowledges support by Ca tedra Presidencial de Ciencias 1996-1997. Partial support for A. C. was provided by the NSF through grant GF-1001-95 from AURA, Inc., under NSF cooperative agreement AST 89-47990, and from Fundacio n Antorchas Argentina under project A-13313. This research used IRAF, an astronomical reduction package distributed by the National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA), under cooperative agreement with the NSF.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherIOP Publishing
dc.rights© 1998. The American Astronomical Society.
dc.sourceThe Astrophysical Journal
dc.subjectcosmology: observations
dc.subjectgalaxies: distances and redshifts
dc.subjectsupernovae: general
dc.subjectsupernovae: individual
dc.titleThe High-Z Supernova Search: Measuring Cosmic Deceleration and Global Curvature of the Universe Using Type IA Supernovae
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume507
dc.date.issued1998
local.identifier.absfor510106 - High energy astrophysics and galactic cosmic rays
local.identifier.absfor510103 - Cosmology and extragalactic astronomy
local.identifier.ariespublicationU6645980xPUB53
local.publisher.urlhttps://iopscience.iop.org/
local.type.statusPublished Version
local.contributor.affiliationSchmidt, Brian, Services Portfolio, ANU
local.contributor.affiliationSuntzeff, Nicholas B, Cerro Tololo Inter-American Observatory
local.contributor.affiliationPhillips, M. M., Carnegie Observatories
local.contributor.affiliationSchommer, Robert, Cerro Tololo Inter-American Observatory
local.contributor.affiliationClocchiatti, Alejandro, Pontifica Universidad Catolica (Astronomy)
local.contributor.affiliationKirshner, Robert P, Harvard-Smithsonian Center for Astrophysics
local.contributor.affiliationGarnavich, Peter M, Harvard-Smithsonian Center for Astrophysics
local.contributor.affiliationChallis, Peter M, Harvard-Smithsonian Center for Astrophysics
local.contributor.affiliationLeibundgut, Bruno, European Southern Observatory
local.contributor.affiliationSpyromilio, Jason, European Southern Observatory
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage46
local.bibliographicCitation.lastpage63
local.identifier.doi10.1086/306308
local.identifier.absseo280120 - Expanding knowledge in the physical sciences
dc.date.updated2021-11-28T07:37:04Z
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/6401..."The Published Version can be archived in any website" from SHERPA/RoMEO site (as at 20/01/2023).
CollectionsANU Research Publications

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