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The Pantheon+ Analysis: The Full Data Set and Light-curve Release

Publication ,  Journal Article
Scolnic, D; Brout, D; Carr, A; Riess, AG; Davis, TM; Dwomoh, A; Jones, DO; Ali, N; Charvu, P; Chen, R; Peterson, ER; Popovic, B; Rose, BM ...
Published in: Astrophysical Journal
October 1, 2022

Here we present 1701 light curves of 1550 unique, spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological parameters as part of the Pantheon+ SN analysis and the Supernovae and H 0 for the Equation of State of dark energy distance-ladder analysis. This effort is one part of a series of works that perform an extensive review of redshifts, peculiar velocities, photometric calibration, and intrinsic-scatter models of SNe Ia. The total number of light curves, which are compiled across 18 different surveys, is a significant increase from the first Pantheon analysis (1048 SNe), particularly at low redshift (z). Furthermore, unlike in the Pantheon analysis, we include light curves for SNe with z < 0.01 such that SN systematic covariance can be included in a joint measurement of the Hubble constant (H 0) and the dark energy equation-of-state parameter (w). We use the large sample to compare properties of 151 SNe Ia observed by multiple surveys and 12 pairs/triplets of “SN siblings”—SNe found in the same host galaxy. Distance measurements, application of bias corrections, and inference of cosmological parameters are discussed in the companion paper by Brout et al., and the determination of H 0 is discussed by Riess et al. These analyses will measure w with ∼3% precision and H 0 with ∼1 km s−1 Mpc−1 precision.

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Published In

Astrophysical Journal

DOI

EISSN

1538-4357

ISSN

0004-637X

Publication Date

October 1, 2022

Volume

938

Issue

2

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0306 Physical Chemistry (incl. Structural)
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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Scolnic, D., Brout, D., Carr, A., Riess, A. G., Davis, T. M., Dwomoh, A., … Zheng, W. K. (2022). The Pantheon+ Analysis: The Full Data Set and Light-curve Release. Astrophysical Journal, 938(2). https://doi.org/10.3847/1538-4357/ac8b7a
Scolnic, D., D. Brout, A. Carr, A. G. Riess, T. M. Davis, A. Dwomoh, D. O. Jones, et al. “The Pantheon+ Analysis: The Full Data Set and Light-curve Release.” Astrophysical Journal 938, no. 2 (October 1, 2022). https://doi.org/10.3847/1538-4357/ac8b7a.
Scolnic D, Brout D, Carr A, Riess AG, Davis TM, Dwomoh A, et al. The Pantheon+ Analysis: The Full Data Set and Light-curve Release. Astrophysical Journal. 2022 Oct 1;938(2).
Scolnic, D., et al. “The Pantheon+ Analysis: The Full Data Set and Light-curve Release.” Astrophysical Journal, vol. 938, no. 2, Oct. 2022. Scopus, doi:10.3847/1538-4357/ac8b7a.
Scolnic D, Brout D, Carr A, Riess AG, Davis TM, Dwomoh A, Jones DO, Ali N, Charvu P, Chen R, Peterson ER, Popovic B, Rose BM, Wood CM, Brown PJ, Chambers K, Coulter DA, Dettman KG, Dimitriadis G, Filippenko AV, Foley RJ, Jha SW, Kilpatrick CD, Kirshner RP, Pan YC, Rest A, Rojas-Bravo C, Siebert MR, Stahl BE, Zheng WK. The Pantheon+ Analysis: The Full Data Set and Light-curve Release. Astrophysical Journal. 2022 Oct 1;938(2).
Journal cover image

Published In

Astrophysical Journal

DOI

EISSN

1538-4357

ISSN

0004-637X

Publication Date

October 1, 2022

Volume

938

Issue

2

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0306 Physical Chemistry (incl. Structural)
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences