The discovery of the most distant known type Ia supernova at redshift 1.914

David O. Jones; Steven A. Rodney; Adam G. Riess; Bahram Mobasher; Tomas Dahlen; Curtis McCully; Teddy F. Frederiksen; Stefano Casertano; Jens Hjorth; Charles R. Keeton; Anton Koekemoer; Louis Gregory Strolger; Tommy G. Wiklind; Peter Challis; Or Graur; Brian Hayden; Brandon Patel; Benjamin J. Weiner; Alexei V. Filippenko; Peter Garnavich; Saurabh W. Jha; Robert P. Kirshner; Henry C. Ferguson; Norman A. Grogin; Dale Kocevski

doi:10.1088/0004-637X/768/2/166

The discovery of the most distant known type Ia supernova at redshift 1.914

David O. Jones, Steven A. Rodney, Adam G. Riess, Bahram Mobasher, Tomas Dahlen, Curtis McCully, Teddy F. Frederiksen, Stefano Casertano, Jens Hjorth, Charles R. Keeton, Anton Koekemoer, Louis Gregory Strolger, Tommy G. Wiklind, Peter Challis, Or Graur, Brian Hayden, Brandon Patel, Benjamin J. Weiner, Alexei V. Filippenko, Peter GarnavichSaurabh W. Jha, Robert P. Kirshner, Henry C. Ferguson, Norman A. Grogin, Dale Kocevski

Multiple Mirror Telescope Observatory

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

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 ΛCDM 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.

Original language	English (US)
Article number	166
Journal	Astrophysical Journal
Volume	768
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/768/2/166
State	Published - May 10 2013

Keywords

supernovae: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/768/2/166

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Jones, D. O., Rodney, S. A., Riess, A. G., Mobasher, B., Dahlen, T., McCully, C., Frederiksen, T. F., Casertano, S., Hjorth, J., Keeton, C. R., Koekemoer, A., Strolger, L. G., Wiklind, T. G., Challis, P., Graur, O., Hayden, B., Patel, B., Weiner, B. J., Filippenko, A. V., ... Kocevski, D. (2013). The discovery of the most distant known type Ia supernova at redshift 1.914. Astrophysical Journal, 768(2), Article 166. https://doi.org/10.1088/0004-637X/768/2/166

Jones, DO, Rodney, SA, Riess, AG, Mobasher, B, Dahlen, T, McCully, C, Frederiksen, TF, Casertano, S, Hjorth, J, Keeton, CR, Koekemoer, A, Strolger, LG, Wiklind, TG, Challis, P, Graur, O, Hayden, B, Patel, B, Weiner, BJ, Filippenko, AV, Garnavich, P, Jha, SW, Kirshner, RP, Ferguson, HC, Grogin, NA & Kocevski, D 2013, 'The discovery of the most distant known type Ia supernova at redshift 1.914', Astrophysical Journal, vol. 768, no. 2, 166. https://doi.org/10.1088/0004-637X/768/2/166

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abstract = "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 ΛCDM 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.",

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AU - Rodney, Steven A.

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AU - Mobasher, Bahram

AU - Dahlen, Tomas

AU - McCully, Curtis

AU - Frederiksen, Teddy F.

AU - Casertano, Stefano

AU - Hjorth, Jens

AU - Keeton, Charles R.

AU - Koekemoer, Anton

AU - Strolger, Louis Gregory

AU - Wiklind, Tommy G.

AU - Challis, Peter

AU - Graur, Or

AU - Hayden, Brian

AU - Patel, Brandon

AU - Weiner, Benjamin J.

AU - Filippenko, Alexei V.

AU - Garnavich, Peter

AU - Jha, Saurabh W.

AU - Kirshner, Robert P.

AU - Ferguson, Henry C.

AU - Grogin, Norman A.

AU - Kocevski, Dale

PY - 2013/5/10

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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 ΛCDM 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 ΛCDM 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.

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The discovery of the most distant known type Ia supernova at redshift 1.914

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