J/ApJ/861/60ivo://CDS.VizieR/J/ApJ/861/60doi:10.26093/cds/vizier.18610060CDSKrolewski A.Lee K.-G.White M.Hennawi J.F.Schlegel D.J.Nugent P.E.,Lukic Z.Stark C.W.Koekemoer A.M.Le Fevre O.Lemaux B.C.Maier C.,Rich R.M.Salvato M.Tasca L.2019-11-22T13:53:29Z2019-08-06T12:43:29ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frintergalactic-mediumspectroscopyredshiftedvisible-astronomyWe present the most distant detection of cosmic voids (z~2.3) and the first detection of three-dimensional voids in the Ly{alpha} forest. We used a 3D tomographic map of the absorption with an effective comoving spatial resolution of 2.5h^-1^Mpc and a volume of 3.15x10^5^h^-3^Mpc^3^, which was reconstructed from moderate-resolution Keck I/LRIS spectra of 240 background Lyman-break galaxies and quasars in a 0.16deg^2^ footprint in the COSMOS field. Voids were detected using a spherical overdensity finder calibrated from hydrodynamical simulations of the intergalactic medium (IGM). This allows us to identify voids in the IGM corresponding to voids in the underlying matter density field, yielding a consistent volume fraction of voids in both data (19.5%) and simulations (18.2%). We fit excursion set models to the void radius function and compare the radially averaged stacked profiles of large voids (r>5h^-1^Mpc) to stacked voids in mock observations and the simulated density field. Comparing with 432 coeval galaxies with spectroscopic redshifts in the same volume as the tomographic map, we find that the tomography-identified voids are underdense in galaxies by 5.95{sigma} compared to random cells.2018ApJ...861...60Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/861/60CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)J/ApJ/744/82 : Catalog of cosmic voids from the SDSS-DR7 (Varela+, 2012)J/AJ/144/16 : Optical & HI properties of galaxies in voids (Kreckel+, 2012)J/A+A/570/A106 : VIPERS. Searching for cosmic voids (Micheletti+, 2014)J/ApJS/225/27 : 3D-HST Survey: grism spectra master catalog (Momcheva+, 2016)J/ApJ/828/21 : ZFIRE v1.0 data release (Nanayakkara+, 2016)J/MNRAS/464/666 : Void Galaxy Survey, photometry and structure (Beygu+, 2017)J/ApJ/835/161 : A cosmic void catalog of SDSS DR12 BOSS galaxies (Mao+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/861/60https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/861/60http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/861/60https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/861/60https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/861/60http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/861/60GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/861/60/table2 (*Voids in CLAMATO 2017 map)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/861/60/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/861/60/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/861/60/table2?GETtext/xml+votable180.050000true149.96482.150.0055555555555555566/27256 27258 27259https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/861/60?format=asciiOpticaldefaultJ/ApJ/861/60/table2*Voids in CLAMATO 2017 maprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintX[0/29.5] Tomographic X coordinate map position; in units of h^-1^Mpcpos.cartesian.xfloatY[0/23.5] Tomographic Y coordinate map position in units of h^-1^Mpcpos.cartesian.yfloatZ[0/436] Tomographic Z coordinate map position in units of h^-1^Mpcpos.cartesian.zfloatRad[2/9.4] Void radius in units of h^-1^Mpcphys.size.radiusfloatRAJ2000[149.9/150.4] Right Ascension of void center (J2000)degpos.eq.ra;meta.mainDEJ2000[2.1/2.5] Declination of void center (J2000)degpos.eq.dec;meta.mainzspec[2/2.6] Spectroscopic redshiftsrc.redshiftdouble