The primordial environment of supermassive black holes (II): deep Y and J band images around the z=6.3 quasar SDSS J1030+0524

Abstract

Many cosmological studies predict that early supermassive black holes (SMBHs) can only form in the most massive dark matter halos embedded within large scale structures marked by galaxy over-densities that may extend up to 10 physical Mpc. This scenario, however, has not been confirmed observationally, as the search for galaxy over-densities around high-z quasars has returned conflicting results. The field around the z=6.28 quasar SDSSJ1030+0524 (J1030) is unique for multi-band coverage and represents an excellent data legacy for studying the environment around a primordial SMBH. In this paper we present wide-area (25x25 arcmin), Y- and J-band imaging of the J1030 field obtained with the near infrared camera WIRCam at the Canada-France-Hawaii Telescope (CFHT). We built source catalogues in the Y- and J-band, and matched those with our photometric catalogue in the r, z, i bands presented in Morselli et al. (2014). We used these new infrared data together with H and K and Spitzer/IRAC data to refine our selection of Lyman Break Galaxies (LBGs), extending our selection criteria to galaxies in the range 25.2<zAB<25.7. We selected 21 robust high-z candidates in the J1030 field with photometric redshift around 6 and colors i-z>=1.3. We found a significant asymmetry in the distribution of the high-z galaxies in J1030, supporting the existence of a coherent large-scale structure around the quasar. We compared our results with those of Bowler et al. (2015), who adopted similar LBGs selection criteria, and estimated an over-density of galaxies in the field of delta = 2.4, which is significant at >4 sigma. The over-density value and its significance are higher than those found in Morselli et al. (2014), and we interpret this as evidence of an improved LBG selection.

arXiv comment13 pages, 8 figures, accepted for publication in A&A

References in corpus (49)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• On the variation of the Initial Mass Function
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• Accurate photometric redshifts for the CFHT Legacy Survey calibrated using the VIMOS VLT Deep Survey
• The Star Formation History of Field Galaxies
• The Hubble Ultra Deep Field
• Spectral Energy Distributions of Hard X-ray selected AGNs in the XMDS Survey
• The large-scale structure of the Universe
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• An updated analytic model for the attenuation by the intergalactic medium
• Reionization after Planck: The Derived Growth of the Cosmic Ionizing Emissivity now matches the Growth of the Galaxy UV Luminosity Density
• The realm of the galaxy protoclusters
• Cold flows and the first quasars
• Color-selected galaxies at z~6 in the Great Observatories Origins Deep Survey
• Subaru high-z exploration of low-luminosity quasars (SHELLQs). I. Discovery of 15 quasars and bright galaxies at 5.7 < z < 6.9
• The galaxy luminosity function at z ~ 6 and evidence for rapid evolution in the bright end from z ~ 7 to 5
• Spectroscopic Observations of Lyman-Break Galaxies at Redshift ~ 4, 5 and 6 in the GOODS-South Field
• The Subaru Deep Field: The Optical Imaging Data
• Observational Searches for Galaxies at z > 6
• Colour corrections for high redshift objects due to intergalactic attenuation
• Evolution of Stellar-to-Halo Mass Ratio at z=0-7 Identified by Clustering Analysis with the Hubble Legacy Imaging and Early Subaru/Hyper Suprime-Cam Survey Data
• The environment of bright QSOs at z ~ 6: Star forming galaxies and X-ray emission
• Near-Infrared Properties of I-Drop Galaxies in the Hubble Ultra Deep Field
• The Angular Correlation Function and Hierarchical Moments of 70000 Faint Galaxies to R=23.5
• The Multiwavelength Survey by Yale-Chile (MUSYC): Deep Near-Infrared Imaging and the Selection of Distant Galaxies
• The spatial clustering of X-ray selected AGN in the XMM-COSMOS field
• The spatial clustering of X-ray selected AGN and galaxies in the Chandra Deep Field South and North
• The Environments of High Redshift QSOs
• LCDM predictions for galaxy protoclusters I: the relation between galaxies, protoclusters and quasars at z~6
• Metals in the IGM approaching the re-ionization epoch: results from X-shooter at the VLT
• Evidence for Primordial Clustering Around the QSO SDSS J1030+0524 at z=6.28
• Discovery of a protocluster at z~6
• Measurement of Galaxy Clustering at z~7.2 and the Evolution of Galaxy Bias from 3.8<z<8 in the XDF, GOODS-S AND GOODS-N
• The Habitat Segregation between Lyman Break Galaxies and Lyman alpha Emitters around a QSO at z~5
• The primordial environment of super massive black holes: large scale galaxy overdensities around $z\sim 6$ QSOs with LBT
• A Large Number of z > 6 Galaxies around a QSO at z = 6.43: Evidence for a Protocluster?
• The Multiwavelength Survey by Yale-Chile (MUSYC): Wide K-band Imaging, Photometric Catalogs, Clustering and Physical Properties of Galaxies at z~2
• No overdensity of Lyman Alpha Emitting Galaxies around a quasar at z~5.7
• An exponential decline at the bright end of the z=6 galaxy luminosity function
• Are z~5 QSOs found in the most massive high redshift over-densities?
• A First Site of Galaxy Cluster Formation: Complete Spectroscopy of a Protocluster at $z=6.01$
• How closely do baryons follow dark matter on large scales?
• No excess of bright galaxies around the redshift 7.1 quasar ULAS J1120+0641
• Observational Properties of Simulated Galaxies in Overdense and Average Regions at High Redshifts z= 6-12
• The Canada-France Deep Fields III: Photometric Redshift Distribution to I(AB) ~ 24
• Large-scale environment of z~5.7 CIV absorption systems I: projected distribution of galaxies
• Large-scale environment of $z\sim 5.7$ CIV absorption systems -II. Spectroscopy of Lyman-$\alpha$ emitters
• Quasars as probes of cosmological reionization
• A galaxy as the source of a Civ absorption system close to the epoch of reionization

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• The REQUIEM Survey I: A Search for Extended Ly-Alpha Nebular Emission Around 31 z>5.7 Quasars
• An ALMA multi-line survey of the ISM in two quasar host-companion galaxy pairs at $z>6$
• Large Scale Environment of a $z=6.61$ Luminous Quasar Probed by Ly$\alpha$ Emitters and Lyman Break Galaxies
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• The web of the Giant: spectroscopic confirmation of a Large Scale Structure around the z=6.31 quasar SDSS J1030+0524
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• Discovery of a galaxy overdensity around a powerful, heavily obscured FRII radio galaxy at z=1.7: star formation promoted by large-scale AGN feedback?
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• ALMA reveals large overdensity and strong clustering of galaxies in quasar environments at $z\sim 4$
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• The deep Chandra survey in the SDSS J1030+0524 field
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• A deep 1.4 GHz survey of the J1030 equatorial field: a new window on radio source populations across cosmic time
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• An Overdensity of Lyman Break Galaxies Around the Hot Dust-Obscured Galaxy WISE J224607.56$-$052634.9
• Large Scale Overdensity of Lyman Break Galaxies Around the z=6.3 Ultraluminous Quasar J0100+2802
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• Extreme Primordial Star Formation Enabled by High Redshift Quasars
• Faint Quasars Live in the Same Number Density Environments as Lyman Break Galaxies at z ~ 4
• Probing the Mpc-scale environment of hyperluminous infrared galaxies at 2<z<4
• Redshift identification of X-ray selected active galactic nuclei in the J1030 field: searching for large-scale structures and high-redshift sources
• Overdensity of Lyman-Break Galaxy Candidates Around Hot Dust-Obscured Galaxies
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• LBT-MODS spectroscopy of high-redshift candidates in the Chandra J1030 field. A newly discovered z$\sim$2.8 large scale structure