SIMBAD references

2017ApJ...839..131C - Astrophys. J., 839, 131-131 (2017/April-3)

Mapping the Most Massive Overdensities Through Hydrogen (MAMMOTH). II. Discovery of the extremely massive overdensity BOSS1441 at z = 2.32.

CAI Z., FAN X., BIAN F., ZABLUDOFF A., YANG Y., PROCHASKA J.X., McGREER I., ZHENG Z.-Y., KASHIKAWA N., WANG R., FRYE B., GREEN R. and JIANG L.

Abstract (from CDS):

Cosmological simulations suggest a strong correlation between high optical-depth Lyα 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 ∼80,000 QSO sight lines over a volume of 0.1 Gpc3 in the Sloan Digital Sky Survey III (SDSS-III), we have identified an extreme overdensity, BOSS1441, which contains a rare group of strong Lyα 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 Lyα emitters (LAEs) down to 0.7×LLyα* 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 >= 1015 M at z∼0. This overdensity is among the most massive large-scale structures at z∼2 discovered to date.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: general - galaxies: high-redshift - intergalactic medium - intergalactic medium

Nomenclature: [CFB2017] BOSS1441 N=1. Fig. 7, Table 2: [CFB2017] LAENN (Nos 1-19).

CDS comments: CDFSz28 and J1431+3239 were not identified.

Simbad objects: 38

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2019.12.14-06:39:16

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