Photometric estimates of redshifts and distance moduli for type Ia supernovae

Richard Kessler; David Cinabro; Bruce A. Bassett; Benjamin Dilday; Joshua A. Frieman; Peter M. Garnavich; Saurabh W. Jha; John P. Marriner; Robert C. Nichol; Masao Sako; Mathew Smith; Joseph P. Bernstein; Dmitry Bizyaev; Ariel Goobar; Stephen Kuhlmann; Donald P. Schneider; Maximilian D. Stritzinger

doi:10.1088/0004-637X/717/1/40

Photometric estimates of redshifts and distance moduli for type Ia supernovae

Richard Kessler, David Cinabro, Bruce A. Bassett, Benjamin Dilday, Joshua A. Frieman, Peter M. Garnavich, Saurabh W. Jha, John P. Marriner, Robert C. Nichol, Masao Sako, Mathew Smith, Joseph P. Bernstein, Dmitry Bizyaev, Ariel Goobar, Stephen Kuhlmann, Donald P. Schneider, Maximilian D. Stritzinger

Institute of Cosmology & Gravitation

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Abstract

Large planned photometric surveys will discover hundreds of thousands of supernovae (SNe), outstripping the resources available for spectroscopic follow-up and necessitating the development of purely photometric methods to exploit these events for cosmological study. We present a light curve fitting technique for type Ia supernova (SN Ia) photometric redshift (photo-z) estimation in which the redshift is determined simultaneously with the other fit parameters. We implement this "LCFIT+Z" technique within the frameworks of the MLCS2K2 and SALTII light curve fit methods and determine the precision on the redshift and distance modulus. This method is applied to a spectroscopically confirmed sample of 296 SNe Ia from the Sloan Digital Sky Survey-II (SDSS-II) SN Survey and 37 publicly available SNe Ia from the Supernova Legacy Survey (SNLS). We have also applied the method to a large suite of realistic simulated light curves for existing and planned surveys, including the SDSS, SNLS, and the Large Synoptic Survey Telescope. When intrinsic SN color fluctuations are included, the photo-z precision for the simulation is consistent with that in the data. Finally, we compare the LCFIT+Z photo-z precision with previous results using color-based SN photo-z estimates.

Original language	English
Pages (from-to)	40-57
Journal	The Astrophysical Journal
Volume	717
Issue number	1
Early online date	7 Jun 2010
DOIs	https://doi.org/10.1088/0004-637X/717/1/40
Publication status	Published - 1 Jul 2010

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Kessler, R., Cinabro, D., Bassett, B. A., Dilday, B., Frieman, J. A., Garnavich, P. M., Jha, S. W., Marriner, J. P., Nichol, R. C., Sako, M., Smith, M., Bernstein, J. P., Bizyaev, D., Goobar, A., Kuhlmann, S., Schneider, D. P., & Stritzinger, M. D. (2010). Photometric estimates of redshifts and distance moduli for type Ia supernovae. The Astrophysical Journal, 717(1), 40-57. https://doi.org/10.1088/0004-637X/717/1/40

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title = "Photometric estimates of redshifts and distance moduli for type Ia supernovae",

abstract = "Large planned photometric surveys will discover hundreds of thousands of supernovae (SNe), outstripping the resources available for spectroscopic follow-up and necessitating the development of purely photometric methods to exploit these events for cosmological study. We present a light curve fitting technique for type Ia supernova (SN Ia) photometric redshift (photo-z) estimation in which the redshift is determined simultaneously with the other fit parameters. We implement this {"}LCFIT+Z{"} technique within the frameworks of the MLCS2K2 and SALTII light curve fit methods and determine the precision on the redshift and distance modulus. This method is applied to a spectroscopically confirmed sample of 296 SNe Ia from the Sloan Digital Sky Survey-II (SDSS-II) SN Survey and 37 publicly available SNe Ia from the Supernova Legacy Survey (SNLS). We have also applied the method to a large suite of realistic simulated light curves for existing and planned surveys, including the SDSS, SNLS, and the Large Synoptic Survey Telescope. When intrinsic SN color fluctuations are included, the photo-z precision for the simulation is consistent with that in the data. Finally, we compare the LCFIT+Z photo-z precision with previous results using color-based SN photo-z estimates.",

author = "Richard Kessler and David Cinabro and Bassett, {Bruce A.} and Benjamin Dilday and Frieman, {Joshua A.} and Garnavich, {Peter M.} and Jha, {Saurabh W.} and Marriner, {John P.} and Nichol, {Robert C.} and Masao Sako and Mathew Smith and Bernstein, {Joseph P.} and Dmitry Bizyaev and Ariel Goobar and Stephen Kuhlmann and Schneider, {Donald P.} and Stritzinger, {Maximilian D.}",

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doi = "10.1088/0004-637X/717/1/40",

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Kessler, R, Cinabro, D, Bassett, BA, Dilday, B, Frieman, JA, Garnavich, PM, Jha, SW, Marriner, JP, Nichol, RC, Sako, M, Smith, M, Bernstein, JP, Bizyaev, D, Goobar, A, Kuhlmann, S, Schneider, DP & Stritzinger, MD 2010, 'Photometric estimates of redshifts and distance moduli for type Ia supernovae', The Astrophysical Journal, vol. 717, no. 1, pp. 40-57. https://doi.org/10.1088/0004-637X/717/1/40

TY - JOUR

T1 - Photometric estimates of redshifts and distance moduli for type Ia supernovae

AU - Kessler, Richard

AU - Cinabro, David

AU - Bassett, Bruce A.

AU - Dilday, Benjamin

AU - Frieman, Joshua A.

AU - Garnavich, Peter M.

AU - Jha, Saurabh W.

AU - Marriner, John P.

AU - Nichol, Robert C.

AU - Sako, Masao

AU - Smith, Mathew

AU - Bernstein, Joseph P.

AU - Bizyaev, Dmitry

AU - Goobar, Ariel

AU - Kuhlmann, Stephen

AU - Schneider, Donald P.

AU - Stritzinger, Maximilian D.

PY - 2010/7/1

Y1 - 2010/7/1

N2 - Large planned photometric surveys will discover hundreds of thousands of supernovae (SNe), outstripping the resources available for spectroscopic follow-up and necessitating the development of purely photometric methods to exploit these events for cosmological study. We present a light curve fitting technique for type Ia supernova (SN Ia) photometric redshift (photo-z) estimation in which the redshift is determined simultaneously with the other fit parameters. We implement this "LCFIT+Z" technique within the frameworks of the MLCS2K2 and SALTII light curve fit methods and determine the precision on the redshift and distance modulus. This method is applied to a spectroscopically confirmed sample of 296 SNe Ia from the Sloan Digital Sky Survey-II (SDSS-II) SN Survey and 37 publicly available SNe Ia from the Supernova Legacy Survey (SNLS). We have also applied the method to a large suite of realistic simulated light curves for existing and planned surveys, including the SDSS, SNLS, and the Large Synoptic Survey Telescope. When intrinsic SN color fluctuations are included, the photo-z precision for the simulation is consistent with that in the data. Finally, we compare the LCFIT+Z photo-z precision with previous results using color-based SN photo-z estimates.

AB - Large planned photometric surveys will discover hundreds of thousands of supernovae (SNe), outstripping the resources available for spectroscopic follow-up and necessitating the development of purely photometric methods to exploit these events for cosmological study. We present a light curve fitting technique for type Ia supernova (SN Ia) photometric redshift (photo-z) estimation in which the redshift is determined simultaneously with the other fit parameters. We implement this "LCFIT+Z" technique within the frameworks of the MLCS2K2 and SALTII light curve fit methods and determine the precision on the redshift and distance modulus. This method is applied to a spectroscopically confirmed sample of 296 SNe Ia from the Sloan Digital Sky Survey-II (SDSS-II) SN Survey and 37 publicly available SNe Ia from the Supernova Legacy Survey (SNLS). We have also applied the method to a large suite of realistic simulated light curves for existing and planned surveys, including the SDSS, SNLS, and the Large Synoptic Survey Telescope. When intrinsic SN color fluctuations are included, the photo-z precision for the simulation is consistent with that in the data. Finally, we compare the LCFIT+Z photo-z precision with previous results using color-based SN photo-z estimates.

U2 - 10.1088/0004-637X/717/1/40

DO - 10.1088/0004-637X/717/1/40

M3 - Article

SN - 0004-637X

VL - 717

SP - 40

EP - 57

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

ER -

Photometric estimates of redshifts and distance moduli for type Ia supernovae

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