J/ApJS/263/27ivo://CDS.VizieR/J/ApJS/263/27doi:10.26093/cds/vizier.22630027CDSHorowitz B.Lee K.-G.Ata M.Muller T.Krolewski A.Prochaska J.X.,Hennawi J.F.White M.Schlegel D.Rich R.M.Nugent P.E.Suzuki N.,Kashino D.Koekemoer A.M.Lemaux B.C.2023-10-03T13:13:33Z2023-04-13T08:30:06ZCDS support team

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

cds-question@unistra.frintergalactic-mediumgalaxiesspectroscopyquasarsredshiftedvisible-astronomysurveysWe present the second data release of the COSMOS Ly{alpha} Mapping And Tomography Observations Survey conducted with the Low Resolution Imaging Spectrometer on the Keck I telescope. This project used Ly{alpha} forest absorption in the spectra of faint star-forming galaxies and quasars at z~2-3 to trace neutral hydrogen in the intergalactic medium. In particular, we use 320 objects over a footprint of ~0.2deg^2^ to reconstruct the absorption field at 2.05<z<2.55 at ~2h^-1^Mpc resolution. We apply a Wiener filtering technique to the observed data to reconstruct three-dimensional (3D) maps of the field over a volume of 4.1x10^5^h^-3^Mpc^3^. In addition to the filtered flux maps, for the first time we infer the underlying dark matter field through a forward-modeling framework from a joint likelihood of galaxy and Ly{alpha} forest data, finding clear examples of the detailed cosmic web consisting of cosmic voids, sheets, filaments, and nodes. In addition to traditional figures, we present a number of interactive 3D models to allow exploration of the data and qualitative comparisons to known galaxy surveys. We find that our inferred overdensities are consistent with those found from galaxy fields. We will make all our reduced spectra, extracted Ly{alpha} forest pixel data, and reconstructed tomographic maps publicly available upon publication.2022ApJS..263...27Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/263/27CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)J/ApJS/172/70 : zCOSMOS-bright catalog (Lilly+, 2007)J/ApJ/675/49 : High-redshift QSOs in the SWIRE survey (Siana+, 2008)J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009)J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)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/ApJ/861/60 : z~2.3 cosmic voids in the COSMOS field (Krolewski+, 2018)J/ApJS/237/31 : CLAMATO DR1: 3D Ly{alpha} forest tomography (Lee+, 2018)J/AJ/160/37 : IGM opacity from Lyman-break galaxies (Monzon+, 2020)http://zenodo.org/record/7524313 : Data products for CLAMATO DR2https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/263/27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/263/27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/263/27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/263/27https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/263/27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/263/27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/263/27/table1 (The COSMOS Ly{alpha} Mapping And Tomography Observations (CLAMATO) Data Release 2 redshift catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/263/27/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/263/27/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/263/27/table1?GETtext/xml+votable180.050000true150.278882.082950.0055555555555555566/27247 27256 27258-27259https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/263/27?format=asciiOpticaldefaultJ/ApJS/263/27/table1The COSMOS Ly{alpha} Mapping And Tomography Observations (CLAMATO) Data Release 2 redshift catalogSeq[403/34729] CLAMATO ID number (<[LKW2018] NNNNN> in Simbad)meta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintfitsDownload the FITS filemeta.ref.urlcharFileNameName of the FITS file in subdirectory "sp" (1)meta.id;meta.fitschargmag[20.12/25.3] Subaru g+ AB magnitude (2)magphot.mag;em.opt.Bfloatq_zspec[-3/4] Redshift confidence grade (4=very secure, 3=secure, 2=probable, 1=insecure, 0=unidentified spectrum) (3)meta.code.qualfloatzspec[0/3.52] Spectroscopic redshift as determined from CLAMATO spectrumsrc.redshiftfloatQSO[0/1] QSO flag (1 if QSO (19 occurrences); 0 if non-QSO)meta.codeintRAJ2000[149.4/150.5] Right Ascension (J2000) (2)degpos.eq.ra;meta.mainDEJ2000[1.7/2.5] Declination (J2000) (2)degpos.eq.dec;meta.mainSN1[0/35.7]? Estimated (median) Ly{alpha}-forest S/N at 2.05<z<2.15stat.snrfloatnullableSN2[0/42.2]? Estimated (median) Ly{alpha}-forest S/N at 2.15<z<2.35stat.snrfloatnullableSN3[0/49.2]? Estimated (median) Ly{alpha}-forest S/N at 2.35<z<2.55stat.snrfloatnullableSNRed[-0.3/64.6]? Estimated S/N over restframe 1250{AA}-1350{AA}stat.snrfloatnullableTomo[0/1] Flag on whether sightline was used in tomographic map (0 for no, 1 for yes)meta.codeintTexp[7200/53100] Exposure time on the spectrum, in seconds (aggregate)stime.duration;obs.exposureintDR1Source also in DR1 (link to Lee+, 2018, J/ApJS/237/31)meta.ref.urlintnullableCOSMOSDisplay data from the COSMOS multi-wavelength photometry catalog (II/284)meta.ref.urlchar