Dark Energy Survey Year 1 results: validation of weak lensing cluster member contamination estimates from P(z) decomposition-Reference-Cited by-同舟云学术

Dark Energy Survey Year 1 results: validation of weak lensing cluster member contamination estimates from P(z) decomposition

Published:2019-08-08 Issue:2 Volume:489 Page:2511-2524
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Varga T N¹²,DeRose J³⁴⁵,Gruen D³⁴⁵^ORCID,McClintock T⁶^ORCID,Seitz S¹²,Rozo E⁷,Costanzi M²,Hoyle B¹²,MacCrann N⁸⁹,Plazas A A¹⁰,Rykoff E S⁴⁵,Simet M¹¹¹²,von der Linden A¹³,Wechsler R H³⁴⁵,Annis J¹⁴,Avila S¹⁵,Bertin E¹⁶¹⁷,Brooks D¹⁸,Buckley-Geer E¹⁴,Burke D L⁴⁵,Carnero Rosell A¹⁹²⁰,Carrasco Kind M²¹²²,Carretero J²³,Cunha C E⁴,D’Andrea C B²⁴,da Costa L N²⁰²⁵,De Vicente J¹⁹,Desai S²⁶,Diehl H T¹⁴,Dietrich J P²⁷²⁸,Doel P¹⁸,Evrard A E²⁹³⁰,Flaugher B¹⁴,Fosalba P³¹³²,Frieman J¹⁴³³,García-Bellido J³⁴,Gaztanaga E³¹³²,Gerdes D W²⁹³⁰,Gruendl R A²¹²²,Gschwend J²⁰²⁵,Gutierrez G¹⁴,Hartley W G¹⁸³⁵,Hollowood D L³⁶,Honscheid K⁸⁹,James D J³⁷,Jeltema T³⁶,Kuehn K³⁸,Kuropatkin N¹⁴,Lima M²⁰³⁹,Maia M A G²⁰²⁵,March M²⁴,Marshall J L⁴⁰,Melchior P⁴¹,Menanteau F²¹²²,Miller C J²⁹³⁰,Miquel R²³⁴²,Ogando R L C²⁰²⁵,Romer A K⁴³,Sanchez E¹⁹,Scarpine V¹⁴,Schubnell M³⁰,Serrano S³¹³²,Sevilla-Noarbe I¹⁹,Smith M⁴⁴,Sobreira F²⁰⁴⁵,Suchyta E⁴⁶,Swanson M E C²²,Tarle G³⁰,Thomas D¹⁵,Tucker D L¹⁴,Zhang Y¹⁴,

Affiliation:

1. Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, D-85748 Garching, Germany

2. Fakultät für Physik, Universitäts-Sternwarte, Ludwig−Maximilians Universität München, Scheinerstr. 1, D-81679 München, Germany

3. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA

4. Kavli Institute for Particle Astrophysics and Cosmology, PO Box 2450, Stanford University, Stanford, CA 94305, USA

5. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA

6. Brookhaven National Laboratory, Bldg 510, Upton, NY 11973, USA

7. Department of Physics, University of Arizona, Tucson, AZ 85721, USA

8. Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210, USA

9. Department of Physics, The Ohio State University, Columbus, OH 43210, USA

10. Department of Astrophysical Sciences, Princeton University, 4 Ivy Lane, Princeton, NJ 08544, USA

11. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA

12. University of California, Riverside, 900 University Avenue, Riverside, CA 92521, USA

13. Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794, USA

14. Fermi National Accelerator Laboratory, PO Box 500, Batavia, IL 60510, USA

15. Institute of Cosmology and Gravitation, University of Portsmouth, Portsmouth PO1 3FX, UK

16. CNRS, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France

17. Institut d’Astrophysique de Paris, Sorbonne Universités, UPMC Univ Paris 06, UMR 7095, F-75014, Paris, France

18. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK

19. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain

20. Laboratório Interinstitucional de e-Astronomia - LIneA, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil

21. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801, USA

22. National Center for Supercomputing Applications, 1205 West Clark St., Urbana, IL 61801, USA

23. Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra (Barcelona) Spain

24. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104, USA

25. Observatório Nacional, Rua Gal. José Cristino 77, Rio de Janeiro, RJ - 20921-400, Brazil

26. Department of Physics, IIT Hyderabad, Kandi, Telangana 502285, India

27. Excellence Cluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany

28. Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, D-81679 Munich, Germany

29. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA

30. Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA

31. Institut d’Estudis Espacials de Catalunya (IEEC), E-08034 Barcelona, Spain

32. Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain

33. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637, USA

34. Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid, E-28049 Madrid, Spain

35. Department of Physics, ETH Zurich, Wolfgang-Pauli-Strasse 16, CH-8093 Zurich, Switzerland

36. Santa Cruz Institute for Particle Physics, Santa Cruz, CA 95064, USA

37. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA

38. Australian Astronomical Optics, Macquarie University, North Ryde, NSW 2113, Australia

39. Departamento de Física Matemática, Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, SP 05314-970, Brazil

40. 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

41. Department of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USA

42. Institució Catalana de Recerca i Estudis Avançats, E-08010 Barcelona, Spain

43. Department of Physics and Astronomy, Pevensey Building, University of Sussex, Brighton BN1 9QH, UK

44. School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK

45. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, SP 13083-859 Campinas, Brazil

46. Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

Abstract

ABSTRACT Weak lensing source galaxy catalogues used in estimating the masses of galaxy clusters can be heavily contaminated by cluster members, prohibiting accurate mass calibration. In this study, we test the performance of an estimator for the extent of cluster member contamination based on decomposing the photometric redshift P(z) of source galaxies into contaminating and background components. We perform a full scale mock analysis on a simulated sky survey approximately mirroring the observational properties of the Dark Energy Survey Year One observations (DES Y1), and find excellent agreement between the true number profile of contaminating cluster member galaxies in the simulation and the estimated one. We further apply the method to estimate the cluster member contamination for the DES Y1 redMaPPer cluster mass calibration analysis, and compare the results to an alternative approach based on the angular correlation of weak lensing source galaxies. We find indications that the correlation based estimates are biased by the selection of the weak lensing sources in the cluster vicinity, which does not strongly impact the P(z) decomposition method. Collectively, these benchmarks demonstrate the strength of the P(z) decomposition method in alleviating membership contamination and enabling highly accurate cluster weak lensing studies without broad exclusion of source galaxies, thereby improving the total constraining power of cluster mass calibration via weak lensing.

Funder

Deutsche Forschungsgemeinschaft

U.S. Department of Energy

Jet Propulsion Laboratory

California Institute of Technology

National Aeronautics and Space Administration

Stanford University

National Science Foundation

Science and Technology Facilities Council

Higher Education Funding Council for England

University of Illinois

University of Chicago