Twenty-three high-redshift supernovae from the Institute for Astronomy Deep Survey

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dc.contributor.authorBarris, BJ
dc.contributor.authorTonry, JL
dc.contributor.authorBlondin, S
dc.contributor.authorChallis, P
dc.contributor.authorChornock, R
dc.contributor.authorClocchiatti, A
dc.contributor.authorFilippenko, AV
dc.contributor.authorGarnavich, P
dc.contributor.authorHolland, ST
dc.contributor.authorJha, S
dc.contributor.authorKirshner, RP
dc.contributor.authorKrisciunas, K
dc.contributor.authorLeibundgut, B
dc.contributor.authorLi, WD
dc.contributor.authorMatheson, T
dc.contributor.authorMiknaitis, G
dc.contributor.authorRiess, AG
dc.contributor.authorSchmidt, BP
dc.contributor.authorSmith, RC
dc.contributor.authorSollerman, J
dc.contributor.authorSpyromilio, J
dc.contributor.authorStubbs, CW
dc.contributor.authorSuntzeff, NB
dc.contributor.authorAussel, H
dc.contributor.authorChambers, KC
dc.contributor.authorConnelley, MS
dc.contributor.authorDonovan, D
dc.contributor.authorHenry, JP
dc.contributor.authorKaiser, N
dc.contributor.authorLiu, MC
dc.contributor.authorMartín, EL
dc.contributor.authorWainscoat, RJ
dc.date.accessioned2025-01-21T01:08:17Z
dc.date.available2025-01-21T01:08:17Z
dc.date.issued2004
dc.description.abstractWe present photometric and spectroscopic observations of 23 high-redshift supernovae (SNe) spanning a range of z = 0.34-1.03, nine of which are unambiguously classified as Type Ia. These SNe were discovered during the IfA Deep Survey, which began in 2001 September and observed a total of 2.5 deg(2) to a depth of approximately m approximate to 25-26 in RIZ over 9-17 visits, typically every 1-3 weeks for nearly 5 months, with additional observations continuing until 2002 April. We give a brief description of the survey motivations, observational strategy, and reduction process. This sample of 23 high-redshift SNe includes 15 at z greater than or equal to 0.7, doubling the published number of objects at these redshifts, and indicates that the evidence for acceleration of the universe is not due to a systematic effect proportional to redshift. In combination with the recent compilation of Tonry et al. (2003), we calculate cosmological parameter density contours that are consistent with the flat universe indicated by the cosmic microwave background (Spergel et al. 2003). Adopting the constraint that Omega(total) = 1.0, we obtain best-fit values of (Omega(m), Omega(Lambda)) = (0.33, 0.67) using 22 SNe from this survey augmented by the literature compilation. We show that using the empty-beam model for gravitational lensing does not eliminate the need for Omega(Lambda) > 0. Experience from this survey indicates great potential for similar large-scale surveys while also revealing the limitations of performing surveys for z > 1 SNe from the ground.
dc.fuente.origenWOS
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96449
dc.identifier.wosidWOS:000189343700004
dc.issue.numero2
dc.language.isoen
dc.pagina.final594
dc.pagina.inicio571
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectcosmological parameters
dc.subjectdistance scale
dc.subjectgalaxies : distances and redshifts
dc.subjectsupernovae : general
dc.titleTwenty-three high-redshift supernovae from the Institute for Astronomy Deep Survey
dc.typeartículo
dc.volumen602
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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