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SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements

Publication ,  Journal Article
Pierel, JDR; Jones, DO; Kenworthy, WD; Dai, M; Kessler, R; Ashall, C; Do, A; Peterson, ER; Shappee, BJ; Siebert, MR; Barna, T; Brink, TG ...
Published in: Astrophysical Journal
November 1, 2022

A large fraction of Type Ia supernova (SN Ia) observations over the next decade will be in the near-infrared (NIR), at wavelengths beyond the reach of the current standard light-curve model for SN Ia cosmology, SALT3 (∼2800-8700 Å central filter wavelength). To harness this new SN Ia sample and reduce future light-curve standardization systematic uncertainties, we train SALT3 at NIR wavelengths (SALT3-NIR) up to 2 μm with the open-source model-training software SALTshaker, which can easily accommodate future observations. Using simulated data, we show that the training process constrains the NIR model to ∼2%-3% across the phase range (−20 to 50 days). We find that Hubble residual (HR) scatter is smaller using the NIR alone or optical+NIR compared to optical alone, by up to ∼30% depending on filter choice (95% confidence). There is significant correlation between NIR light-curve stretch measurements and luminosity, with stretch and color corrections often improving HR scatter by up to ∼20%. For SN Ia observations expected from the Roman Space Telescope, SALT3-NIR increases the amount of usable data in the SALT framework by ∼20% at redshift z ≲ 0.4 and by ∼50% at z ≲ 0.15. The SALT3-NIR model is part of the open-source SNCosmo and SNANA SN Ia cosmology packages.

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Published In

Astrophysical Journal

DOI

EISSN

1538-4357

ISSN

0004-637X

Publication Date

November 1, 2022

Volume

939

Issue

1

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
 

Citation

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Pierel, J. D. R., Jones, D. O., Kenworthy, W. D., Dai, M., Kessler, R., Ashall, C., … Wang, Q. (2022). SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements. Astrophysical Journal, 939(1). https://doi.org/10.3847/1538-4357/ac93f9
Pierel, J. D. R., D. O. Jones, W. D. Kenworthy, M. Dai, R. Kessler, C. Ashall, A. Do, et al. “SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements.” Astrophysical Journal 939, no. 1 (November 1, 2022). https://doi.org/10.3847/1538-4357/ac93f9.
Pierel JDR, Jones DO, Kenworthy WD, Dai M, Kessler R, Ashall C, et al. SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements. Astrophysical Journal. 2022 Nov 1;939(1).
Pierel, J. D. R., et al. “SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements.” Astrophysical Journal, vol. 939, no. 1, Nov. 2022. Scopus, doi:10.3847/1538-4357/ac93f9.
Pierel JDR, Jones DO, Kenworthy WD, Dai M, Kessler R, Ashall C, Do A, Peterson ER, Shappee BJ, Siebert MR, Barna T, Brink TG, Burke J, Calamida A, Camacho-Neves Y, Jaeger TD, Filippenko AV, Foley RJ, Galbany L, Fox OD, Gomez S, Hiramatsu D, Hounsell R, Howell DA, Jha SW, Kwok LA, Pérez-Fournon I, Poidevin F, Rest A, Rubin D, Scolnic DM, Shirley R, Strolger LG, Tinyanont S, Wang Q. SALT3-NIR: Taking the Open-source Type Ia Supernova Model to Longer Wavelengths for Next-generation Cosmological Measurements. Astrophysical Journal. 2022 Nov 1;939(1).
Journal cover image

Published In

Astrophysical Journal

DOI

EISSN

1538-4357

ISSN

0004-637X

Publication Date

November 1, 2022

Volume

939

Issue

1

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