Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample

D. Scolnic; A. Rest; A. Riess; M. E. Huber; R. J. Foley; D. Brout; R. Chornock; G. Narayan; J. L. Tonry; E. Berger; A. M. Soderberg; C. W. Stubbs; R. P. Kirshner; S. Rodney; S. J. Smartt; E. Schlafly; M. T. Botticella; P. Challis; I. Czekala; M. Drout; M. J. Hudson; R. Kotak; C. Leibler; R. Lunnan; G. H. Marion; M. McCrum; D. Milisavljevic; A. Pastorello; N. E. Sanders; K. Smith; E. Stafford; D. Thilker; S. Valenti; W. M. Wood-Vasey; Z. Zheng; W. S. Burgett; K. C. Chambers; L. Denneau; P. W. Draper; H. Flewelling; K. W. Hodapp; N. Kaiser; R. P. Kudritzki; E. A. Magnier; N. Metcalfe; P. A. Price; W. Sweeney; R. Wainscoat; C. Waters

doi:10.1088/0004-637X/795/1/45

Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample

D. Scolnic^*, A. Rest, A. Riess, M. E. Huber, R. J. Foley, D. Brout, R. Chornock, G. Narayan, J. L. Tonry, E. Berger, A. M. Soderberg, C. W. Stubbs, R. P. Kirshner, S. Rodney, S. J. Smartt, E. Schlafly, M. T. Botticella, P. Challis, I. Czekala, M. DroutM. J. Hudson, R. Kotak, C. Leibler, R. Lunnan, G. H. Marion, M. McCrum, D. Milisavljevic, A. Pastorello, N. E. Sanders, K. Smith, E. Stafford, D. Thilker, S. Valenti, W. M. Wood-Vasey, Z. Zheng, W. S. Burgett, K. C. Chambers, L. Denneau, P. W. Draper, H. Flewelling, K. W. Hodapp, N. Kaiser, R. P. Kudritzki, E. A. Magnier, N. Metcalfe, P. A. Price, W. Sweeney, R. Wainscoat, C. Waters

^*Corresponding author for this work

Physics and Astronomy

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

133 Scopus citations

Abstract

We probe the systematic uncertainties from the 113 Type Ia supernovae (SN Ia) in the Pan-STARRS1 (PS1) sample along with 197 SN Ia from a combination of low-redshift surveys. The companion paper by Rest et al. describes the photometric measurements and cosmological inferences from the PS1 sample. The largest systematic uncertainty stems from the photometric calibration of the PS1 and low-z samples. We increase the sample of observed Calspec standards from 7 to 10 used to define the PS1 calibration system. The PS1 and SDSS-II calibration systems are compared and discrepancies up to ∼0.02 mag are recovered. We find uncertainties in the proper way to treat intrinsic colors and reddening produce differences in the recovered value of w up to 3%. We estimate masses of host galaxies of PS1 supernovae and detect an insignificant difference in distance residuals of the full sample of 0.037 ± 0.031 mag for host galaxies with high and low masses. Assuming flatness and including systematic uncertainties in our analysis of only SNe measurements, we find w = -1.120^+0.360_-0.206(Stat)^+0.269_-0.291(Sys). With additional constraints from Baryon acoustic oscillation, cosmic microwave background (CMB) (Planck) and H₀ measurements, we find w = -1.166^+0.072_-0.069 and Ω_m = 0.280^+0.013_-0.012 (statistical and systematic errors added in quadrature). The significance of the inconsistency with w = -1 depends on whether we use Planck or Wilkinson Microwave Anisotropy Probe measurements of the CMB: w_{BAO+H0+SN+WMAP} = -1.124^+0.083_-0.065.

Original language	English (US)
Article number	45
Journal	Astrophysical Journal
Volume	795
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/795/1/45
State	Published - Nov 1 2014

Keywords

dark energy
supernovae: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/795/1/45

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Scolnic, D., Rest, A., Riess, A., Huber, M. E., Foley, R. J., Brout, D., Chornock, R., Narayan, G., Tonry, J. L., Berger, E., Soderberg, A. M., Stubbs, C. W., Kirshner, R. P., Rodney, S., Smartt, S. J., Schlafly, E., Botticella, M. T., Challis, P., Czekala, I., ... Waters, C. (2014). Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample. Astrophysical Journal, 795(1), Article 45. https://doi.org/10.1088/0004-637X/795/1/45

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title = "Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample",

abstract = "We probe the systematic uncertainties from the 113 Type Ia supernovae (SN Ia) in the Pan-STARRS1 (PS1) sample along with 197 SN Ia from a combination of low-redshift surveys. The companion paper by Rest et al. describes the photometric measurements and cosmological inferences from the PS1 sample. The largest systematic uncertainty stems from the photometric calibration of the PS1 and low-z samples. We increase the sample of observed Calspec standards from 7 to 10 used to define the PS1 calibration system. The PS1 and SDSS-II calibration systems are compared and discrepancies up to ∼0.02 mag are recovered. We find uncertainties in the proper way to treat intrinsic colors and reddening produce differences in the recovered value of w up to 3%. We estimate masses of host galaxies of PS1 supernovae and detect an insignificant difference in distance residuals of the full sample of 0.037 ± 0.031 mag for host galaxies with high and low masses. Assuming flatness and including systematic uncertainties in our analysis of only SNe measurements, we find w = -1.120+0.360-0.206(Stat)+0.269-0.291(Sys). With additional constraints from Baryon acoustic oscillation, cosmic microwave background (CMB) (Planck) and H0 measurements, we find w = -1.166+0.072-0.069 and Ωm = 0.280+0.013-0.012 (statistical and systematic errors added in quadrature). The significance of the inconsistency with w = -1 depends on whether we use Planck or Wilkinson Microwave Anisotropy Probe measurements of the CMB: wBAO+H0+SN+WMAP = -1.124+0.083-0.065.",

keywords = "dark energy, supernovae: general",

author = "D. Scolnic and A. Rest and A. Riess and Huber, {M. E.} and Foley, {R. J.} and D. Brout and R. Chornock and G. Narayan and Tonry, {J. L.} and E. Berger and Soderberg, {A. M.} and Stubbs, {C. W.} and Kirshner, {R. P.} and S. Rodney and Smartt, {S. J.} and E. Schlafly and Botticella, {M. T.} and P. Challis and I. Czekala and M. Drout and Hudson, {M. J.} and R. Kotak and C. Leibler and R. Lunnan and Marion, {G. H.} and M. McCrum and D. Milisavljevic and A. Pastorello and Sanders, {N. E.} and K. Smith and E. Stafford and D. Thilker and S. Valenti and Wood-Vasey, {W. M.} and Z. Zheng and Burgett, {W. S.} and Chambers, {K. C.} and L. Denneau and Draper, {P. W.} and H. Flewelling and Hodapp, {K. W.} and N. Kaiser and Kudritzki, {R. P.} and Magnier, {E. A.} and N. Metcalfe and Price, {P. A.} and W. Sweeney and R. Wainscoat and C. Waters",

year = "2014",

month = nov,

day = "1",

doi = "10.1088/0004-637X/795/1/45",

language = "English (US)",

volume = "795",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "1",

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Scolnic, D, Rest, A, Riess, A, Huber, ME, Foley, RJ, Brout, D, Chornock, R, Narayan, G, Tonry, JL, Berger, E, Soderberg, AM, Stubbs, CW, Kirshner, RP, Rodney, S, Smartt, SJ, Schlafly, E, Botticella, MT, Challis, P, Czekala, I, Drout, M, Hudson, MJ, Kotak, R, Leibler, C, Lunnan, R, Marion, GH, McCrum, M, Milisavljevic, D, Pastorello, A, Sanders, NE, Smith, K, Stafford, E, Thilker, D, Valenti, S, Wood-Vasey, WM, Zheng, Z, Burgett, WS, Chambers, KC, Denneau, L, Draper, PW, Flewelling, H, Hodapp, KW, Kaiser, N, Kudritzki, RP, Magnier, EA, Metcalfe, N, Price, PA, Sweeney, W, Wainscoat, R & Waters, C 2014, 'Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample', Astrophysical Journal, vol. 795, no. 1, 45. https://doi.org/10.1088/0004-637X/795/1/45

TY - JOUR

T1 - Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample

AU - Scolnic, D.

AU - Rest, A.

AU - Riess, A.

AU - Huber, M. E.

AU - Foley, R. J.

AU - Brout, D.

AU - Chornock, R.

AU - Narayan, G.

AU - Tonry, J. L.

AU - Berger, E.

AU - Soderberg, A. M.

AU - Stubbs, C. W.

AU - Kirshner, R. P.

AU - Rodney, S.

AU - Smartt, S. J.

AU - Schlafly, E.

AU - Botticella, M. T.

AU - Challis, P.

AU - Czekala, I.

AU - Drout, M.

AU - Hudson, M. J.

AU - Kotak, R.

AU - Leibler, C.

AU - Lunnan, R.

AU - Marion, G. H.

AU - McCrum, M.

AU - Milisavljevic, D.

AU - Pastorello, A.

AU - Sanders, N. E.

AU - Smith, K.

AU - Stafford, E.

AU - Thilker, D.

AU - Valenti, S.

AU - Wood-Vasey, W. M.

AU - Zheng, Z.

AU - Burgett, W. S.

AU - Chambers, K. C.

AU - Denneau, L.

AU - Draper, P. W.

AU - Flewelling, H.

AU - Hodapp, K. W.

AU - Kaiser, N.

AU - Kudritzki, R. P.

AU - Magnier, E. A.

AU - Metcalfe, N.

AU - Price, P. A.

AU - Sweeney, W.

AU - Wainscoat, R.

AU - Waters, C.

PY - 2014/11/1

Y1 - 2014/11/1

N2 - We probe the systematic uncertainties from the 113 Type Ia supernovae (SN Ia) in the Pan-STARRS1 (PS1) sample along with 197 SN Ia from a combination of low-redshift surveys. The companion paper by Rest et al. describes the photometric measurements and cosmological inferences from the PS1 sample. The largest systematic uncertainty stems from the photometric calibration of the PS1 and low-z samples. We increase the sample of observed Calspec standards from 7 to 10 used to define the PS1 calibration system. The PS1 and SDSS-II calibration systems are compared and discrepancies up to ∼0.02 mag are recovered. We find uncertainties in the proper way to treat intrinsic colors and reddening produce differences in the recovered value of w up to 3%. We estimate masses of host galaxies of PS1 supernovae and detect an insignificant difference in distance residuals of the full sample of 0.037 ± 0.031 mag for host galaxies with high and low masses. Assuming flatness and including systematic uncertainties in our analysis of only SNe measurements, we find w = -1.120+0.360-0.206(Stat)+0.269-0.291(Sys). With additional constraints from Baryon acoustic oscillation, cosmic microwave background (CMB) (Planck) and H0 measurements, we find w = -1.166+0.072-0.069 and Ωm = 0.280+0.013-0.012 (statistical and systematic errors added in quadrature). The significance of the inconsistency with w = -1 depends on whether we use Planck or Wilkinson Microwave Anisotropy Probe measurements of the CMB: wBAO+H0+SN+WMAP = -1.124+0.083-0.065.

AB - We probe the systematic uncertainties from the 113 Type Ia supernovae (SN Ia) in the Pan-STARRS1 (PS1) sample along with 197 SN Ia from a combination of low-redshift surveys. The companion paper by Rest et al. describes the photometric measurements and cosmological inferences from the PS1 sample. The largest systematic uncertainty stems from the photometric calibration of the PS1 and low-z samples. We increase the sample of observed Calspec standards from 7 to 10 used to define the PS1 calibration system. The PS1 and SDSS-II calibration systems are compared and discrepancies up to ∼0.02 mag are recovered. We find uncertainties in the proper way to treat intrinsic colors and reddening produce differences in the recovered value of w up to 3%. We estimate masses of host galaxies of PS1 supernovae and detect an insignificant difference in distance residuals of the full sample of 0.037 ± 0.031 mag for host galaxies with high and low masses. Assuming flatness and including systematic uncertainties in our analysis of only SNe measurements, we find w = -1.120+0.360-0.206(Stat)+0.269-0.291(Sys). With additional constraints from Baryon acoustic oscillation, cosmic microwave background (CMB) (Planck) and H0 measurements, we find w = -1.166+0.072-0.069 and Ωm = 0.280+0.013-0.012 (statistical and systematic errors added in quadrature). The significance of the inconsistency with w = -1 depends on whether we use Planck or Wilkinson Microwave Anisotropy Probe measurements of the CMB: wBAO+H0+SN+WMAP = -1.124+0.083-0.065.

KW - dark energy

KW - supernovae: general

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UR - http://www.scopus.com/inward/citedby.url?scp=84908112304&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/795/1/45

DO - 10.1088/0004-637X/795/1/45

M3 - Article

AN - SCOPUS:84908112304

SN - 0004-637X

VL - 795

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 45

ER -

Systematic uncertainties associated with the cosmological analysis of the first PAN-STARRS1 type Ia supernova sample

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