Mapping the Most Massive Overdensities through Hydrogen (MAMMOTH). II. Discovery of the Extremely Massive Overdensity BOSS1441 at z=2.32

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dc.contributor.authorCai, Zheng
dc.contributor.authorFan, Xiaohui
dc.contributor.authorBian, Fuyan
dc.contributor.authorZabludoff, Ann
dc.contributor.authorYang, Yujin
dc.contributor.authorProchaska, J. Xavier
dc.contributor.authorMcGreer, Ian
dc.contributor.authorZheng, Zhen Ya
dc.contributor.authorKashikawa, Nobunari
dc.contributor.authorWang, Ran
dc.contributor.authorFrye, Brenda
dc.contributor.authorGreen, Richard
dc.contributor.authorJiang, Linhua
dc.date.accessioned2024-01-10T12:06:27Z
dc.date.available2024-01-10T12:06:27Z
dc.date.issued2017
dc.description.abstractCosmological simulations suggest a strong correlation between high optical-depth Lya absorbers, which arise from the intergalactic medium, and 3D mass overdensities on scales of 10-30 h(-1) comoving Mpc. By examining the absorption spectra of similar to 80,000 QSO sight lines over a volume of 0.1 Gpc(3) in the Sloan Digital Sky Survey III (SDSS-III), we have identified an extreme overdensity, BOSS1441, which contains a rare group of strong Lya absorbers at z = 2.32 +/- 0.02. This absorber group is associated with six QSOs at the same redshift on a 30 comoving Mpc scale. Using Mayall/MOSAIC narrowband and broadband imaging, we detect Lya emitters (LAEs) down to 0.7 x L-Ly alpha ' * a and reveal a large-scale structure of LAEs in this field. Our follow-up LBT observations have spectroscopically confirmed 20 galaxies in the density peak. We show that BOSS1441 has an LAE overdensity of 10.8 +/- 2.6 on a 15 comoving Mpc scale, which could collapse to a massive cluster with M greater than or similar to 10(15) M-circle dot at z similar to 0. This overdensity is among the most massive large-scale structures at z similar to 2 discovered to date.
dc.description.funderUS NSF grant
dc.description.funderNSF
dc.description.funderNASA
dc.description.funderJSPS
dc.description.funderDirect For Mathematical & Physical Scien
dc.description.funderDivision Of Astronomical Sciences
dc.fechaingreso.objetodigital2024-05-30
dc.format.extent11 páginas
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/aa6a1a
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/aa6a1a
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76163
dc.identifier.wosidWOS:000403467800007
dc.information.autorucAstrofísica;Zheng Z;S/I;243995
dc.issue.numero2
dc.language.isoen
dc.nota.accesoContenido parcial
dc.publisherIOP PUBLISHING LTD
dc.revistaASTROPHYSICAL JOURNAL
dc.rightsacceso restringido
dc.subjectgalaxies: clusters: general
dc.subjectgalaxies: high-redshift
dc.subjectintergalactic medium
dc.subjectLY-ALPHA FOREST
dc.subjectOSCILLATION SPECTROSCOPIC SURVEY
dc.subjectMETAL-LINE ABSORPTION
dc.subjectLARGE-SCALE STRUCTURE
dc.subjectHIGH-REDSHIFT
dc.subjectEMITTING GALAXIES
dc.subjectDATA RELEASE
dc.subjectDENSITY RELATION
dc.subjectPROTOCLUSTER
dc.subjectMATTER
dc.titleMapping the Most Massive Overdensities through Hydrogen (MAMMOTH). II. Discovery of the Extremely Massive Overdensity BOSS1441 at z=2.32
dc.typeartículo
dc.volumen839
sipa.codpersvinculados243995
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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