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Probing star formation in the dense environments of z ~ 1 lensing haloes aligned with dusty star-forming galaxies detected with the South Pole Telescope

Welikala, N. and Doré, O. and Murphy, E. J. and Vieira, J. D. (2015) Probing star formation in the dense environments of z ~ 1 lensing haloes aligned with dusty star-forming galaxies detected with the South Pole Telescope. Monthly Notices of the Royal Astronomical Society, 455 (2). pp. 1629-1646. ISSN 0035-8711.

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We probe star formation in the environments of massive (∼10^(13) M_⊙) dark matter haloes at redshifts of z ∼ 1. This star formation is linked to a submillimetre clustering signal which we detect in maps of the Planck High Frequency Instrument that are stacked at the positions of a sample of high redshift (z > 2) strongly lensed dusty star-forming galaxies (DSFGs) selected from the South Pole Telescope (SPT) 2500 deg^2 survey. The clustering signal has submillimetre colours which are consistent with the mean redshift of the foreground lensing haloes (z ∼ 1). We report a mean excess of star formation rate (SFR) compared to the field, of (2700 ± 700) M_⊙ yr^(−1) from all galaxies contributing to this clustering signal within a radius of 3.5 arcmin from the SPT DSFGs. The magnitude of the Planck excess is in broad agreement with predictions of a current model of the cosmic infrared background. The model predicts that 80 per cent of the excess emission measured by Planck originates from galaxies lying in the neighbouring haloes of the lensing halo. Using Herschel maps of the same fields, we find a clear excess, relative to the field, of individual sources which contribute to the Planck excess. The mean excess SFR compared to the field is measured to be (370 ± 40) M_⊙ yr^(−1) per resolved, clustered source. Our findings suggest that the environments around these massive z ∼ 1 lensing haloes host intense star formation out to about 2 Mpc. The flux enhancement due to clustering should also be considered when measuring flux densities of galaxies in Planck data.

Item Type:Article
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URLURL TypeDescription Paper
Doré, O.0000-0002-5009-7563
Murphy, E. J.0000-0001-7089-7325
Additional Information:© 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2015 October 2. Received 2015 September 29. In original form 2014 November 10. First published online November 18, 2015. We thank the anonymous referee for valuable comments. The South Pole Telescope is supported by the National Science Foundation through grant PLR-1248097. Partial support is also provided by the NSF Physics Frontier Center grant PHY-1125897 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation, and the Gordon and Betty Moore Foundation grant GBMF 947. This paper is based on work supported by the US National Science Foundation under grant no. AST-1312950. Based on observations obtained with Planck (, an ESA science mission with instruments and contributions directly funded by ESA Member States, NASA, and Canada. The development of Planck has been supported by: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MICINN, and JA (Spain); Tekes, AoF, and CSC (Finland); DLR and MPG (Germany); CSA (Canada); DTU Space (Denmark); SER/SSO (Switzerland); RCN (Norway); SFI (Ireland); FCT/MCTES (Portugal); and PRACE (EU). A description of the Planck Collaboration and a list of its members, including the technical or scientific activities in which they have been involved, can be found at This paper makes use of the following ALMA data: ADS/JAO.ALMA#2011.0.00957.S. ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS (Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. APEX is a collaboration between the Max-Planck-Institut für Radioastronomie, the European Southern Observatory, and the Onsala Space Observatory. This work is based in part on observations made with Herschel, a European Space Agency Cornerstone Mission with significant participation by NASA, and supported through an award issued by JPL/Caltech for OT2_jvieira_5. NW acknowledges support from the Beecroft Institute for Particle Astrophysics and Cosmology and previous support from the Centre National d’Études Spatiales (CNES). Part of the research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. MS was supported for this research through a stipend from the International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne. IF-C acknowledges the support of grant ANR-11-BS56-015. JG-N acknowledges financial support from the Spanish CSIC for a JAE-DOC fellowship, cofunded by the European Social Fund, by the Spanish Ministerio de Ciencia e Innovacion, AYA2012-39475-C02-01, and Consolider-Ingenio 2010, CSD2010-00064, projects. NW thanks B. Partridge, J. Delabrouille, D. Harrison, and P. Vielva for useful comments.
Funding AgencyGrant Number
Kavli Institute of Cosmological PhysicsUNSPECIFIED
Kavli FoundationUNSPECIFIED
Gordon and Betty Moore FoundationGBMF 947
European Space Agency (ESA)UNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
United Kingdom Space Agency (UKSA)UNSPECIFIED
Consejo Superior de Investigaciones Científicas (CSIC)UNSPECIFIED
Deutschen Zentrums für Luft- und Raumfahrt (DLR)UNSPECIFIED
Canadian Space Agency (CSA)UNSPECIFIED
State Secretariat for Education and Research (SER)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Science Foundation, IrelandUNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
Beecroft Institute for Particle Astrophysics and CosmologyUNSPECIFIED
Centre National d’Études Spatiales (CNES)UNSPECIFIED
International Max Planck Research School (IMPRS) for Astronomy and AstrophysicsUNSPECIFIED
Agence Nationale de la Recherche (ANR)ANR-11-BS56-015
European Social FundUNSPECIFIED
Ministerio de Ciencia e Innovacion (MICINN)AYA2012-39475-C02-01
Consolider-Ingenio 2010CSD2010-00064
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Institut national des sciences de l'Univers (INSU)UNSPECIFIED
Institut national du patrimoine (INP)UNSPECIFIED
Consiglio Nazionale delle Ricerche (CNR)UNSPECIFIED
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Ministerio de Economía y Competitividad (MICINN)UNSPECIFIED
Junta de AndalucíaUNSPECIFIED
Academy of FinlandUNSPECIFIED
CSC – IT Center for Science Ltd.UNSPECIFIED
Swiss Space Office (SSO)UNSPECIFIED
Ministro da Ciência, Tecnologia e Ensino Superior (MCTES)UNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20160204-143736595
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Official Citation:N. Welikala, M. Béthermin, D. Guery, M. Strandet, K. A. Aird, M. Aravena, M. L. N. Ashby, M. Bothwell, A. Beelen, L. E. Bleem, C. de Breuck, M. Brodwin, J. E. Carlstrom, S. C. Chapman, T. M. Crawford, H. Dole, O. Doré, W. Everett, I. Flores-Cacho, A. H. Gonzalez, J. González-Nuevo, T. R. Greve, B. Gullberg, Y. D. Hezaveh, G. P. Holder, W. L. Holzapfel, R. Keisler, G. Lagache, J. Ma, M. Malkan, D. P. Marrone, L. M. Mocanu, L. Montier, E. J. Murphy, N. P. H. Nesvadba, A. Omont, E. Pointecouteau, J. L. Puget, C. L. Reichardt, K. M. Rotermund, D. Scott, P. Serra, J. S. Spilker, B. Stalder, A. A. Stark, K. Story, K. Vanderlinde, J. D. Vieira, and A. Weiß Probing star formation in the dense environments of z ∼ 1 lensing haloes aligned with dusty star-forming galaxies detected with the South Pole Telescope MNRAS (January 11, 2016) Vol. 455 1629-1646 doi:10.1093/mnras/stv2302 First published online November 18, 2015
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64241
Deposited By: Ruth Sustaita
Deposited On:05 Feb 2016 17:25
Last Modified:03 Oct 2019 09:35

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