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First cosmology results using Type IA supernovae from the dark energy survey: effects of chromatic corrections to supernova photometry on measurements of cosmological parameters

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First cosmology results using Type IA supernovae from the dark energy survey : effects of chromatic corrections to supernova photometry on measurements of cosmological parameters. / DES Collaboration; D'Andrea, C. B.; Macaulay, E.; Swann, E.; Avila, S.

In: Monthly Notices of the Royal Astronomical Society, Vol. 485, No. 4, 01.06.2019, p. 5329-5344.

Research output: Contribution to journalArticle

Harvard

DES Collaboration, D'Andrea, CB, Macaulay, E, Swann, E & Avila, S 2019, 'First cosmology results using Type IA supernovae from the dark energy survey: effects of chromatic corrections to supernova photometry on measurements of cosmological parameters', Monthly Notices of the Royal Astronomical Society, vol. 485, no. 4, pp. 5329-5344. https://doi.org/10.1093/mnras/stz619

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Author

DES Collaboration ; D'Andrea, C. B. ; Macaulay, E. ; Swann, E. ; Avila, S. / First cosmology results using Type IA supernovae from the dark energy survey : effects of chromatic corrections to supernova photometry on measurements of cosmological parameters. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 485, No. 4. pp. 5329-5344.

Bibtex

@article{ffb91ee67f6246fbbc677d10df91dde2,
title = "First cosmology results using Type IA supernovae from the dark energy survey: effects of chromatic corrections to supernova photometry on measurements of cosmological parameters",
abstract = "Calibration uncertainties have been the leading systematic uncertainty in recent analyses using Type Ia supernovae (SNe Ia) to measure cosmological parameters. To improve the calibration, we present the application of spectral energy distribution-dependent 'chromatic corrections' to the SN light-curve photometry from the Dark Energy Survey (DES). These corrections depend on the combined atmospheric and instrumental transmission function for each exposure, and they affect photometry at the 0.01 mag (1 per cent) level, comparable to systematic uncertainties in calibration and photometry. Fitting our combined DES and low-z SN Ia sample with baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) priors for the cosmological parameters Ωm (the fraction of the critical density of the universe comprised of matter) and w (the dark energy equation of state parameter), we compare those parameters before and after applying the corrections. We find the change in w and Ωm due to not including chromatic corrections is −0.002 and 0.000, respectively, for the DES-SN3YR sample with BAO and CMB priors, consistent with a larger DES-SN3YR-like simulation, which has a w-change of 0.0005 with an uncertainty of 0.008 and an Ωm change of 0.000 with an uncertainty of 0.002. However, when considering samples on individual CCDs we find large redshift-dependent biases (∼0.02 in distance modulus) for SN distances.",
keywords = "Cosmology: observations, Dark energy, Supernovae: general, Techniques: photometric",
author = "{DES Collaboration} and J. Lasker and R. Kessler and D. Scolnic and D. Brout and Burke, {D. L.} and D'Andrea, {C. B.} and Davis, {T. M.} and Hinton, {S. R.} and Kim, {A. G.} and Li, {T. S.} and C. Lidman and E. Macaulay and A. M{\"o}ller and Rykoff, {E. S.} and M. Sako and M. Smith and M. Sullivan and E. Swann and Tucker, {B. E.} and W. Wester and Bassett, {B. A.} and Abbott, {T. M.C.} and S. Allam and J. Annis and S. Avila and K. Bechtol and E. Bertin and D. Brooks and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Castander, {F. J.} and J. Calcino and D. Carollo and {Da Costa}, {L. N.} and C. Davis and {De Vicente}, J. and Diehl, {H. T.} and P. Doel and A. Drlica-Wagner and B. Flaugher and J. Frieman and J. Garc{\'i}a-Bellido and E. Gaztanaga and D. Gruen and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and Hollowood, {D. L.} and K. Honscheid",
year = "2019",
month = "6",
day = "1",
doi = "10.1093/mnras/stz619",
language = "English",
volume = "485",
pages = "5329--5344",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "4",

}

RIS

TY - JOUR

T1 - First cosmology results using Type IA supernovae from the dark energy survey

T2 - effects of chromatic corrections to supernova photometry on measurements of cosmological parameters

AU - DES Collaboration

AU - Lasker, J.

AU - Kessler, R.

AU - Scolnic, D.

AU - Brout, D.

AU - Burke, D. L.

AU - D'Andrea, C. B.

AU - Davis, T. M.

AU - Hinton, S. R.

AU - Kim, A. G.

AU - Li, T. S.

AU - Lidman, C.

AU - Macaulay, E.

AU - Möller, A.

AU - Rykoff, E. S.

AU - Sako, M.

AU - Smith, M.

AU - Sullivan, M.

AU - Swann, E.

AU - Tucker, B. E.

AU - Wester, W.

AU - Bassett, B. A.

AU - Abbott, T. M.C.

AU - Allam, S.

AU - Annis, J.

AU - Avila, S.

AU - Bechtol, K.

AU - Bertin, E.

AU - Brooks, D.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Castander, F. J.

AU - Calcino, J.

AU - Carollo, D.

AU - Da Costa, L. N.

AU - Davis, C.

AU - De Vicente, J.

AU - Diehl, H. T.

AU - Doel, P.

AU - Drlica-Wagner, A.

AU - Flaugher, B.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Hollowood, D. L.

AU - Honscheid, K.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Calibration uncertainties have been the leading systematic uncertainty in recent analyses using Type Ia supernovae (SNe Ia) to measure cosmological parameters. To improve the calibration, we present the application of spectral energy distribution-dependent 'chromatic corrections' to the SN light-curve photometry from the Dark Energy Survey (DES). These corrections depend on the combined atmospheric and instrumental transmission function for each exposure, and they affect photometry at the 0.01 mag (1 per cent) level, comparable to systematic uncertainties in calibration and photometry. Fitting our combined DES and low-z SN Ia sample with baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) priors for the cosmological parameters Ωm (the fraction of the critical density of the universe comprised of matter) and w (the dark energy equation of state parameter), we compare those parameters before and after applying the corrections. We find the change in w and Ωm due to not including chromatic corrections is −0.002 and 0.000, respectively, for the DES-SN3YR sample with BAO and CMB priors, consistent with a larger DES-SN3YR-like simulation, which has a w-change of 0.0005 with an uncertainty of 0.008 and an Ωm change of 0.000 with an uncertainty of 0.002. However, when considering samples on individual CCDs we find large redshift-dependent biases (∼0.02 in distance modulus) for SN distances.

AB - Calibration uncertainties have been the leading systematic uncertainty in recent analyses using Type Ia supernovae (SNe Ia) to measure cosmological parameters. To improve the calibration, we present the application of spectral energy distribution-dependent 'chromatic corrections' to the SN light-curve photometry from the Dark Energy Survey (DES). These corrections depend on the combined atmospheric and instrumental transmission function for each exposure, and they affect photometry at the 0.01 mag (1 per cent) level, comparable to systematic uncertainties in calibration and photometry. Fitting our combined DES and low-z SN Ia sample with baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) priors for the cosmological parameters Ωm (the fraction of the critical density of the universe comprised of matter) and w (the dark energy equation of state parameter), we compare those parameters before and after applying the corrections. We find the change in w and Ωm due to not including chromatic corrections is −0.002 and 0.000, respectively, for the DES-SN3YR sample with BAO and CMB priors, consistent with a larger DES-SN3YR-like simulation, which has a w-change of 0.0005 with an uncertainty of 0.008 and an Ωm change of 0.000 with an uncertainty of 0.002. However, when considering samples on individual CCDs we find large redshift-dependent biases (∼0.02 in distance modulus) for SN distances.

KW - Cosmology: observations

KW - Dark energy

KW - Supernovae: general

KW - Techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=85064467930&partnerID=8YFLogxK

U2 - 10.1093/mnras/stz619

DO - 10.1093/mnras/stz619

M3 - Article

AN - SCOPUS:85064467930

VL - 485

SP - 5329

EP - 5344

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 4

ER -

ID: 15837073