The discovery of the most distant known type Ia supernova at redshift 1.914
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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The discovery of the most distant known type Ia supernova at redshift 1.914. / Jones, Dennis; Rodney, S.A.; Riess, A.G.; Dahlen, T.; Casertano, S.; Koekemoer, A.; Ferguson, H.C.; Grogin, N.A.; Mobasher, B.; McCully, C.; Keeton, C.R.; Patel, B.; Jha, S.W.; Hjorth, Jens; Frederiksen, T.F.; Strolger, L.-G.; Wiklind, T.G.; Challis, P.; Kirshner, R.P.; Kocevski, D.; Graur, O.; Hayden, B.; Garnavich, P.; Weiner, B.J.; Filippenko, A.V.
I: Astrophysical Journal, Bind 768, Nr. 2, 10.05.2013, s. 166.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - The discovery of the most distant known type Ia supernova at redshift 1.914
AU - Jones, Dennis
AU - Rodney, S.A.
AU - Riess, A.G.
AU - Dahlen, T.
AU - Casertano, S.
AU - Koekemoer, A.
AU - Ferguson, H.C.
AU - Grogin, N.A.
AU - Mobasher, B.
AU - McCully, C.
AU - Keeton, C.R.
AU - Patel, B.
AU - Jha, S.W.
AU - Hjorth, Jens
AU - Frederiksen, T.F.
AU - Strolger, L.-G.
AU - Wiklind, T.G.
AU - Challis, P.
AU - Kirshner, R.P.
AU - Kocevski, D.
AU - Graur, O.
AU - Hayden, B.
AU - Garnavich, P.
AU - Weiner, B.J.
AU - Filippenko, A.V.
PY - 2013/5/10
Y1 - 2013/5/10
N2 - We present the discovery of a Type Ia supernova (SN) at redshift z = 1.914 from the CANDELS multi-cycle treasury program on the Hubble Space Telescope (HST). This SN was discovered in the infrared using the Wide-Field Camera 3, and it is the highest-redshift Type Ia SN yet observed. We classify this object as a SN Ia by comparing its light curve and spectrum with those of a large sample of Type Ia and core-collapse SNe. Its apparent magnitude is consistent with that expected from the ¿CDM concordance cosmology. We discuss the use of spectral evidence for classification of z > 1.5 SNe Ia using HST grism simulations, finding that spectral data alone can frequently rule out SNe II, but distinguishing between SNe Ia and SNe Ib/c can require prohibitively long exposures. In such cases, a quantitative analysis of the light curve may be necessary for classification. Our photometric and spectroscopic classification methods can aid the determination of SN rates and cosmological parameters from the full high-redshift CANDELS SN sample.
AB - We present the discovery of a Type Ia supernova (SN) at redshift z = 1.914 from the CANDELS multi-cycle treasury program on the Hubble Space Telescope (HST). This SN was discovered in the infrared using the Wide-Field Camera 3, and it is the highest-redshift Type Ia SN yet observed. We classify this object as a SN Ia by comparing its light curve and spectrum with those of a large sample of Type Ia and core-collapse SNe. Its apparent magnitude is consistent with that expected from the ¿CDM concordance cosmology. We discuss the use of spectral evidence for classification of z > 1.5 SNe Ia using HST grism simulations, finding that spectral data alone can frequently rule out SNe II, but distinguishing between SNe Ia and SNe Ib/c can require prohibitively long exposures. In such cases, a quantitative analysis of the light curve may be necessary for classification. Our photometric and spectroscopic classification methods can aid the determination of SN rates and cosmological parameters from the full high-redshift CANDELS SN sample.
UR - http://www.scopus.com/inward/record.url?scp=84877077333&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/768/2/166
DO - 10.1088/0004-637X/768/2/166
M3 - Journal article
AN - SCOPUS:84877077333
VL - 768
SP - 166
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
ER -
ID: 45678196