Fulltext

CFHTLenS: weak lensing calibrated scaling relations for low-mass clusters of galaxies

Kettula, K. ; Giodini, S. ; van Uitert, E. ; Hoekstra, H. ; Finoguenov, A. ; Lerchster, M. ; Erben, T. ; Heymans, C. ; Hildebrandt, H. ; Kitching, T. D. ; Mahdavi, A. ; Mellier, Y. ; Miller, L. ; Mirkazemi, M. ; Van Waerbeke, L. ; Coupon, J. ; Egami, E. ; Fu, L. ; Hudson, M. J. ; Kneib, J. P. ; Kuijken, K. ; McCracken, H. J. ; Pereira, M. J. ; Rowe, B. ; Schrabback, T. ; Tanaka, M. ; Velander, M.

In: Monthly Notices of the Royal Astronomical Society, 2015, vol. 451, no. 2, p. 1460-1481

Zum persönliche Liste hinzufügen
    Titel
    • CFHTLenS: weak lensing calibrated scaling relations for low-mass clusters of galaxies
    Autor
    • Kettula, K.. Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland
    • Giodini, S.. Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
    • van Uitert, E.. Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn, Germany
    • Hoekstra, H.. Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
    • Finoguenov, A.. Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland
    • Lerchster, M.. Department of Physics, University of Helsinki, PO Box 64, FI-00014 Helsinki, Finland
    • Erben, T.. Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn, Germany
    • Heymans, C.. Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
    • Hildebrandt, H.. Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn, Germany
    • Kitching, T. D.. Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT, UK
    • Mahdavi, A.. Department of Physics and Astronomy, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132, USA
    • Mellier, Y.. Sorbonne UniversiteÌs, UPMC Univ Paris 06, UMR 7095, Institut dAstrophysique de Paris, F-75014 Paris, France
    • Miller, L.. Department of Physics, Oxford University, Keble Road, Oxford OX1 3RH, UK
    • Mirkazemi, M.. Max-Planck-Institut für Extraterrestrische Physik, GiessenbachstraÃe, D-85740 Garching, Germany
    • Van Waerbeke, L.. Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada
    • Coupon, J.. Astronomical Observatory of the University of Geneva, ch. dEcogia 16, CH-1290 Versoix, Switzerland
    • Egami, E.. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
    • Fu, L.. Shanghai Key Lab for Astrophysics, Shanghai Normal University, 100 Guilin Road, 200234 Shanghai, China
    • Hudson, M. J.. Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
    • Kneib, J. P.. Laboratoire d'Astrophysique de Marseille, CNRS-Université, Ple de l'Etoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie, F-1338 Marseille, France
    • Kuijken, K.. Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
    • McCracken, H. J.. Sorbonne UniversiteÌs, UPMC Univ Paris 06, UMR 7095, Institut dAstrophysique de Paris, F-75014 Paris, France
    • Pereira, M. J.. Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan
    • Rowe, B.. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
    • Schrabback, T.. Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
    • Tanaka, M.. National Astronomical Observatory of Japan 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
    • Velander, M.. Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Monthly Notices of the Royal Astronomical Society, 2015, vol. 451, no. 2, p. 1460-1481. Oxford University Press
    Andere elektronische Ausgabe
    OAI-PMH-ID
    • oai:doc.rero.ch:299476
    Summary
    We present weak lensing and X-ray analysis of 12 low-mass clusters from the Canada-France-Hawaii Telescope Lensing Survey and XMM-CFHTLS surveys. We combine these systems with high-mass systems from Canadian Cluster Comparison Project and low-mass systems from Cosmic Evolution Survey to obtain a sample of 70 systems, spanning over two orders of magnitude in mass. We measure core-excised LX-TX, M-LX and M-TX scaling relations and include corrections for observational biases. By providing fully bias-corrected relations, we give the current limitations for LX and TX as cluster mass proxies. We demonstrate that TX benefits from a significantly lower intrinsic scatter at fixed mass than LX. By studying the residuals of the bias-corrected relations, we show for the first time using weak lensing masses that galaxy groups seem more luminous and warmer for their mass than clusters. This implies a steepening of the M-LX and M-TX relations at low masses. We verify the inferred steepening using a different high-mass sample from the literature and show that variance between samples is the dominant effect leading to discrepant scaling relations. We divide our sample into subsamples of merging and relaxed systems, and find that mergers may have enhanced scatter in lensing measurements, most likely due to stronger triaxiality and more substructure. For the LX-TX relation, which is unaffected by lensing measurements, we find the opposite trend in scatter. We also explore the effects of X-ray cross-calibration and find that Chandra calibration leads to flatter LX-TX and M-TX relations than XMM-Newton