Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations

Journal Article · Mon Sep 03 00:00:00 EDT 2018 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/sty2424· OSTI ID:1471257

Cawthon, R. ^[1]; Davis, C. ^[2]; Gatti, M. ^[3]; Vielzeuf, P. ^[3]; Elvin-Poole, J. ^[4]; Rozo, E. ^[5]; Frieman, J. ^[6]; Rykoff, E. S. ^[7]; Alarcon, A. ^[8]; Bernstein, G. M. ^[9]; Bonnett, C. ^[3]; Rosell, A. Carnero ^[10]; Castander, F. J. ^[8]; Chang, C. ^[11]; da Costa, L. N. ^[10]; De Vicente, J. ^[12]; DeRose, J. ^[13]; Drlica-Wagner, A. ^[14]; Gaztanaga, E. ^[8]; Giannantonio, T. ^[15] ; Gruen, D. ^[7]; Gschwend, J. ^[10]; Hartley, W. G. ^[16]; Hoyle, B. ^[17]; Lin, H. ^[14]; Maia, M. A. G. ^[10]; Miquel, R. ^[18]; Ogando, R. L. C. ^[10]; Rau, M. M. ^[19]; Roodman, A. ^[7]; Ross, A. J. ^[20]; Sevilla-Noarbe, I. ^[12]; Troxel, M. A. ^[21]; Wechsler, R. H. ^[22]; Abbott, T. M. C. ^[23]; Abdalla, F. B. ^[24]; Allam, S. ^[14]; Annis, J. ^[14]; Avila, S. ^[25]; Banerji, M. ^[26]; Bechtol, K. ^[27]; Bernstein, R. A. ^[28]; Bertin, E. ^[29]; Brooks, D. ^[30]; Burke, D. L. ^[7]; Kind, M. Carrasco ^[31]; Carretero, J. ^[3]; Cunha, C. E. ^[2]; D’Andrea, C. B. ^[9]; DePoy, D. L. ^[32]; Desai, S. ^[33]; Diehl, H. T. ^[14]; Doel, P. ^[30]; Eifler, T. F. ^[34]; Evrard, A. E. ^[35]; Flaugher, B. ^[14]; Fosalba, P. ^[36]; García-Bellido, J. ^[37]; Gerdes, D. W. ^[35]; Gruendl, R. A. ^[31]; Gutierrez, G. ^[14]; Hollowood, D. ^[38]; Honscheid, K. ^[21]; James, D. J. ^[39]; Jeltema, T. ^[38]; Krause, E. ^[34]; Kuehn, K. ^[40]; Kuhlmann, S. ^[41]; Kuropatkin, N. ^[14]; Lahav, O. ^[30]; Lima, M. ^[42]; Marshall, J. L. ^[32]; Martini, P. ^[43]; Menanteau, F. ^[31]; Miller, C. J. ^[35]; Plazas, A. A. ^[44]; Sanchez, E. ^[12]; Scarpine, V. ^[14]; Schindler, R. ^[45]; Schubnell, M. ^[46]; Sheldon, E. ^[47]; Smith, M. ^[48]; Smith, R. C. ^[23]; Soares-Santos, M. ^[14]; Sobreira, F. ^[49]; Suchyta, E. ^[50]; Swanson, M. E. C. ^[51]; Tarle, G. ^[46]; Thomas, D. ^[52]; Tucker, D. L. ^[14]; Walker, A. R. ^[23]; Collaboration), (DES

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1. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA, Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
2. Kavli Institute for Particle Astrophysics & Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USA
3. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain
4. Jodrell Bank Center for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
5. Department of Physics, University of Arizona, Tucson, AZ 85721, USA
6. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA, Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA, Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
7. Kavli Institute for Particle Astrophysics & Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USA, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
8. Institute of Space Sciences, IEEC-CSIC, Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain
9. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA
10. Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil, Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil
11. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA
12. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
13. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA, Kavli Institute for Particle Astrophysics & Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USA
14. Fermi National Accelerator Laboratory, P. O. Box 500, Batavia, IL 60510, USA
15. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK, Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK, Fakultät für Physik, Universitäts-Sternwarte, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany
16. Department of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UK, Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland
17. Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, Germany, Fakultät für Physik, Universitäts-Sternwarte, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany
18. Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain, Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain
19. Fakultät für Physik, Universitäts-Sternwarte, Ludwig-Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany
20. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA
21. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA, Department of Physics, The Ohio State University, Columbus, OH 43210, USA
22. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA, Kavli Institute for Particle Astrophysics & Cosmology, P. O. Box 2450, Stanford University, Stanford, CA 94305, USA, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
23. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
24. Department of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UK, Department of Physics and Electronics, Rhodes University, PO Box 94, 6140 Grahamstown, South Africa
25. Institute of Cosmology & Gravitation, University of Portsmouth, Portsmouth, PO1 3FX, UK, Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
26. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK, Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
27. LSST, 933 North Cherry Avenue, Tucson, AZ 85721, USA
28. Observatories of the Carnegie Institution of Washington, 813 Santa Barbara St., Pasadena, CA 91101, USA
29. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France, Institut d’Astrophysique de Paris, Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, F-75014, Paris, France
30. Department of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
31. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA, National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
32. George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
33. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India
34. Department of Astronomy/Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA, Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
35. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA, Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
36. Institute of Space Sciences (ICE, CSIC) & Institut d’Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain
37. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain
38. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA
39. Astronomy Department, University of Washington, Box 351580, Seattle, WA 98195, USA
40. Australian Astronomical Observatory, North Ryde, NSW 2113, Australia
41. Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA
42. Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP, 05314-970, Brazil, Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil
43. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA, Department of Astronomy, The Ohio State University, Columbus, OH 43210, USA
44. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA
45. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
46. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
47. Brookhaven National Laboratory, Bldg 510, Upton, NY 11973, USA
48. School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK
49. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859, Campinas, SP, Brazil, Laboratório Interinstitucional de e-Astronomia – LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil
50. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
51. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA
52. Institute of Cosmology & Gravitation, University of Portsmouth, Portsmouth, PO1 3FX, UK

We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results determine the priors of the redshift distribution of redMaGiC galaxies, which were used for galaxy clustering measurements and as lenses for galaxy–galaxy lensing measurements in DES Y1 cosmological analyses. We empirically determine the bias in redMaGiC photometric redshift estimates using angular cross-correlations with Baryon Oscillation Spectroscopic Survey (BOSS) galaxies. For DES, we calibrate a single-parameter redshift bias in three photometric redshift bins: z ε [0.15, 0.3], [0.3,0.45], and [0.45,0.6]. Our best-fit results in each bin give photometric redshift biases of |Δz| < 0.01. To further test the redMaGiC algorithm, we apply our calibration procedure to SDSS redMaGiC galaxies, where the statistical precision of the cross-correlation measurement is much higher due to a greater overlap with BOSS galaxies. For SDSS, we also find best-fit results of |Δz| < 0.01. We compare our results to other analyses of redMaGiC photometric redshifts.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
• Contributing Organization: DES; DES Collaboration
• Grant/Contract Number: AC02-07CH11359; AC05-00OR22725; SC0012704
• OSTI ID: 1471257
• Alternate ID(s): OSTI ID: 1418143; OSTI ID: 1479692; OSTI ID: 1488513
• Report Number(s): arXiv:1712.07298; FERMILAB-PUB-17-594-AE; BNL-209793-2018-JAAM
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 481 Journal Issue: 2; ISSN 0035-8711
• Publisher: Oxford University Press
• Country of Publication: United Kingdom
• Language: English

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