J/ApJS/237/31ivo://CDS.VizieR/J/ApJS/237/31doi:10.26093/cds/vizier.22370031CDSLee K.-G.Krolewski A.White M.Schlegel D.Nugent P.E.Hennawi J.F.,Muller T.Pan R.Prochaska J.X.Font-Ribera A.Suzuki N.,Glazebrook K.Kacprzak G.G.Kartaltepe J.S.Koekemoer A.M.Le Fevre O.,Lemaux B.C.Maier C.Nanayakkara T.Rich R.M.Sanders D.B.Salvato M.,Tasca L.Tran K.-V.H.2021-02-23T07:43:39Z2018-11-15T14:51:35ZCDS support team

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

cds-question@unistra.frintergalactic-mediumgalaxiesspectroscopyquasarsredshiftedvisible-astronomyFaint star-forming galaxies at z~2-3 can be used as alternative background sources to probe the Ly{alpha} forest in addition to quasars, yielding high sightline densities that enable 3D tomographic reconstruction of the foreground absorption field. Here, we present the first data release from the COSMOS Ly{alpha} Mapping And Tomography Observations (CLAMATO) Survey, which was conducted with the LRIS spectrograph on the Keck I telescope. Over an observational footprint of 0.157deg^2^ within the COSMOS field, we used 240 galaxies and quasars at 2.17<z<3.00, with a mean comoving transverse separation of 2.37h^-1^Mpc, as background sources probing the foreground Ly{alpha} forest absorption at 2.05<z<2.55. The Ly{alpha} forest data was then used to create a Wiener-filtered tomographic reconstruction over a comoving volume of 3.15x10^5^h^-3^Mpc^3^ with an effective smoothing scale of 2.5h^-1^Mpc. In addition to traditional figures, this map is also presented as a virtual-reality visualization and manipulable interactive figure. We see large overdensities and underdensities that visually agree with the distribution of coeval galaxies from spectroscopic redshift surveys in the same field, including overdensities associated with several recently discovered galaxy protoclusters in the volume. Quantitatively, the map signal-to-noise is S/N^wiener^~3.4 over a 3h^-1^Mpc top-hat kernel based on the variances estimated from the Wiener filter. This data release includes the redshift catalog, reduced spectra, extracted Ly{alpha} forest pixel data, and reconstructed tomographic map of the absorption.2018ApJS..237...31Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/237/31CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)J/A+A/530/A50 : Principal Component Analysis of QSO UV spectra (Paris+, 2011)J/A+A/559/A85 : 1D Lya forest power spectrum (Palanque-Delabrouille+, 2013)J/ApJS/206/8 : COSMOS/UltraVISTA Ks-selected catalogs v4.1 (Muzzin+, 2013)J/ApJ/828/21 : ZFIRE v1.0 data release (Nanayakkara+, 2016)J/ApJ/830/51 : FourStar galaxy evolution survey (ZFOURGE) (Straatman+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/237/31https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/237/31http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/237/31https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/237/31https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/237/31http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/237/31GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/237/31/table2 (CLAMATO Data Release 1 source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/237/31/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/237/31/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/237/31/table2?GETtext/xml+votable180.050000true150.253770832.29110.0055555555555555566/27247 27256 27258 27259https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/237/31?format=asciiOpticaldefaultJ/ApJS/237/31/table2CLAMATO Data Release 1 source catalogSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[762/34724] Sequential numeric identifiermeta.id;meta.mainintRAJ2000[9/10] Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000[1/2] Degree of Declination (J2000) (1)pos.eq.dec;meta.maingmag[20.1/25.3] g band AB magnitude (1)magphot.mag;em.opt.Bfloatzphot[0.06/3.1] Photometric redshift estimatesrc.redshiftfloatzspec[0.04/3.5]? Spectroscopic redshiftsrc.redshiftfloatnullableConf[0/4] Redshift confidence grade (4: very secure) (2)meta.code.qualintTypeType (421 "GAL"; 16 "QSO")src.classcharTexp[7200/41400] Exposure time, secondsstime.duration;obs.exposureintTomo[NY] Usage in Ly{alpha} forest tomographic reconstructionmeta.codecharSN1[0.4/36]? Median per-pixel spectral continuum-to-noise ratio within 2.05<z{alpha}<2.15 Ly{alpha} foreststat.snrfloatnullableSN2[0.4/42.2]? Median per-pixel spectral continuum-to-noise ratio within 2.15<z{alpha}<2.35 Ly{alpha} foreststat.snrfloatnullableSN3[0.4/49.2]? Median per-pixel spectral continuum-to-noise ratio within 2.35<z{alpha}<2.55 Ly{alpha} foreststat.snrfloatnullableCOSMOSDisplay data from the COSMOS multi-wavelength photometry catalog (II/284)meta.ref.urlchar