Tests of the accelerating universe with near-infrared observations of a high-redshift type Ia supernova

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dc.contributor.authorRiess, AG
dc.contributor.authorFilippenko, AV
dc.contributor.authorLiu, MC
dc.contributor.authorChallis, P
dc.contributor.authorClocchiatti, A
dc.contributor.authorDiercks, A
dc.contributor.authorGarnavich, PM
dc.contributor.authorHogan, CJ
dc.contributor.authorJha, S
dc.contributor.authorKirshner, RP
dc.contributor.authorLeibundgut, B
dc.contributor.authorPhillips, MM
dc.contributor.authorReiss, D
dc.contributor.authorSchmidt, BP
dc.contributor.authorSchommer, RA
dc.contributor.authorSmith, RC
dc.contributor.authorSpyromilio, J
dc.contributor.authorStubbs, C
dc.contributor.authorSuntzeff, NB
dc.contributor.authorTonry, J
dc.contributor.authorWoudt, P
dc.contributor.authorBrunner, RJ
dc.contributor.authorDey, A
dc.contributor.authorGal, R
dc.contributor.authorGraham, J
dc.contributor.authorLarkin, J
dc.contributor.authorOdewahn, SC
dc.contributor.authorOppenheimer, B
dc.date.accessioned2025-01-21T01:31:18Z
dc.date.available2025-01-21T01:31:18Z
dc.date.issued2000
dc.description.abstractWe have measured the rest-frame B-, V-, and I-band light curves of a high-redshift type Ia supernova (SN 1a), SN 1999Q (z = 0.46), using the Hubble Space Telescope (HST) and ground-based near-infrared detectors. A goal of this study is the measurement of the color excess, EB-I, a sensitive indicator of interstellar or intergalactic dust, which could affect recent cosmological measurements from high-redshift SNe Ia. Our observations disfavor a 30% opacity of SN Ia visual light by dust as an alternative to an accelerating universe. This statement applies to both Galactic-type dust (rejected at the 3.4 sigma confidence level) and grayer dust (grain size > 0.1 mu m, rejected at the 2.3-2.6 sigma confidence level) as proposed by Aguirre. The rest-frame I-band light curve shows the secondary maximum 1 month after the B maximum typical of nearby SNe fa of normal luminosity, providing no indication of evolution as a function of redshift out to z approximate to 0.5. An expanded set of similar observations could improve the constraints on any contribution of extragalactic dust to the dimming of high-redshift SNe Ia.
dc.fuente.origenWOS
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/97035
dc.identifier.wosidWOS:000087963300005
dc.issue.numero1
dc.language.isoen
dc.pagina.final67
dc.pagina.inicio62
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectcosmology : observations
dc.subjectdistance scale
dc.subjectsupernovae : general
dc.titleTests of the accelerating universe with near-infrared observations of a high-redshift type Ia supernova
dc.typeartículo
dc.volumen536
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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