Dark Energy Survey Year 3 results: redshift calibration of the MagLim lens sample from the combination of SOMPZ and clustering and its impact on cosmology
Publication
, Journal Article
Giannini, G; Alarcon, A; Gatti, M; Porredon, A; Crocce, M; Bernstein, GM; Cawthon, R; Sánchez, C; Doux, C; Elvin-Poole, J; Raveri, M; Myles, J ...
Published in: Monthly Notices of the Royal Astronomical Society
January 1, 2024
We present an alternative calibration of the MagLim lens sample redshift distributions from the Dark Energy Survey (DES) first 3 yr of data (Y3). The new calibration is based on a combination of a self-organizing-map-based scheme and clustering redshifts to estimate redshift distributions and inherent uncertainties, which is expected to be more accurate than the original DES Y3 redshift calibration of the lens sample. We describe in detail the methodology, and validate it on simulations and discuss the main effects dominating our error budget. The new calibration is in fair agreement with the fiducial DES Y3 n(z) calibration, with only mild differences (<3σ) in the means and widths of the distributions. We study the impact of this new calibration on cosmological constraints, analysing DES Y3 galaxy clustering and galaxy-galaxy lensing measurements, assuming a Lambda cold dark matter cosmology. We obtain
Duke Scholars
Published In
Monthly Notices of the Royal Astronomical Society
DOI
EISSN
1365-2966
ISSN
0035-8711
Publication Date
January 1, 2024
Volume
527
Issue
2
Start / End Page
2010 / 2036
Related Subject Headings
- Astronomy & Astrophysics
- 5109 Space sciences
- 5107 Particle and high energy physics
- 5101 Astronomical sciences
- 0201 Astronomical and Space Sciences
Citation
APA
Chicago
ICMJE
MLA
NLM
Giannini, G., Alarcon, A., Gatti, M., Porredon, A., Crocce, M., Bernstein, G. M., … Ogando, R. L. C. (2024). Dark Energy Survey Year 3 results: redshift calibration of the MagLim lens sample from the combination of SOMPZ and clustering and its impact on cosmology. Monthly Notices of the Royal Astronomical Society, 527(2), 2010–2036. https://doi.org/10.1093/mnras/stad2945
Giannini, G., A. Alarcon, M. Gatti, A. Porredon, M. Crocce, G. M. Bernstein, R. Cawthon, et al. “Dark Energy Survey Year 3 results: redshift calibration of the MagLim lens sample from the combination of SOMPZ and clustering and its impact on cosmology.” Monthly Notices of the Royal Astronomical Society 527, no. 2 (January 1, 2024): 2010–36. https://doi.org/10.1093/mnras/stad2945.
Giannini G, Alarcon A, Gatti M, Porredon A, Crocce M, Bernstein GM, et al. Dark Energy Survey Year 3 results: redshift calibration of the MagLim lens sample from the combination of SOMPZ and clustering and its impact on cosmology. Monthly Notices of the Royal Astronomical Society. 2024 Jan 1;527(2):2010–36.
Giannini, G., et al. “Dark Energy Survey Year 3 results: redshift calibration of the MagLim lens sample from the combination of SOMPZ and clustering and its impact on cosmology.” Monthly Notices of the Royal Astronomical Society, vol. 527, no. 2, Jan. 2024, pp. 2010–36. Scopus, doi:10.1093/mnras/stad2945.
Giannini G, Alarcon A, Gatti M, Porredon A, Crocce M, Bernstein GM, Cawthon R, Sánchez C, Doux C, Elvin-Poole J, Raveri M, Myles J, Lin H, Amon A, Allam S, Alves O, Andrade-Oliveira F, Baxter E, Bechtol K, Becker MR, Blazek J, Camacho H, Campos A, Rosell AC, Kind MC, Choi A, Cordero J, De Vicente J, Derose J, Diehl HT, Dodelson S, Drlica-Wagner A, Eckert K, Fang X, Farahi A, Fosalba P, Friedrich O, Gruen D, Gruendl RA, Gschwend J, Harrison I, Hartley WG, Huff EM, Jarvis M, Krause E, Kuropatkin N, Lemos P, MacCrann N, McCullough J, Muir J, Pandey S, Prat J, Rodriguez-Monroy M, Ross AJ, Rykoff ES, Samuroff S, Secco LF, Sevilla-Noarbe I, Sheldon E, Troxel MA, Tucker DL, Weaverdyck N, Yanny B, Yin B, Zhang Y, Abbott TMC, Aguena M, Bacon D, Bertin E, Bocquet S, Brooks D, Burke DL, Carretero J, Castander FJ, Costanzi M, Da Costa LN, Pereira MES, Desai S, Doel P, Ferrero I, Flaugher B, Friedel D, Frieman J, García-Bellido J, Gerdes DW, Gutierrez G, Hinton SR, Hollowood DL, Honscheid K, James DJ, Kent S, Kuehn K, Lahav O, Lidman C, Lima M, Melchior P, Mena-Fernández J, Menanteau F, Miquel R, Ogando RLC. Dark Energy Survey Year 3 results: redshift calibration of the MagLim lens sample from the combination of SOMPZ and clustering and its impact on cosmology. Monthly Notices of the Royal Astronomical Society. 2024 Jan 1;527(2):2010–2036.
Published In
Monthly Notices of the Royal Astronomical Society
DOI
EISSN
1365-2966
ISSN
0035-8711
Publication Date
January 1, 2024
Volume
527
Issue
2
Start / End Page
2010 / 2036
Related Subject Headings
- Astronomy & Astrophysics
- 5109 Space sciences
- 5107 Particle and high energy physics
- 5101 Astronomical sciences
- 0201 Astronomical and Space Sciences