SIMBAD references

2019ApJ...883..142H - Astrophys. J., 883, 142-142 (2019/October-1)

SILVERRUSH. VIII. Spectroscopic identifications of early large-scale structures with protoclusters over 200 Mpc at z ∼ 6-7: strong associations of dusty star-forming galaxies.

HARIKANE Y., OUCHI M., ONO Y., FUJIMOTO S., DONEVSKI D., SHIBUYA T., FAISST A.L., GOTO T., HATSUKADE B., KASHIKAWA N., KOHNO K., HASHIMOTO T., HIGUCHI R., INOUE A.K., LIN Y.-T., MARTIN C.L., OVERZIER R., SMAIL I., TOSHIKAWA J., UMEHATA H., AO Y., CHAPMAN S., CLEMENTS D.L., IM M., JING Y., KAWAGUCHI T., LEE C.-H., LEE M.M., LIN L., MATSUOKA Y., MARINELLO M., NAGAO T., ONODERA M., TOFT S. and WANG W.-H.

Abstract (from CDS):

We have obtained three-dimensional maps of the universe in ∼200 x 200 x 80 comoving Mpc3 (cMpc3) volumes each at z = 5.7 and 6.6 based on a spectroscopic sample of 179 galaxies that achieves >=80% completeness down to the Lyα luminosity of log(LLyα/[ergs–1])=43.0, based on our Keck and Gemini observations and the literature. The maps reveal filamentary large-scale structures and two remarkable overdensities made out of at least 44 and 12 galaxies at z = 5.692 (z57OD) and z = 6.585 (z66OD), respectively, making z66OD the most distant overdensity spectroscopically confirmed to date, with >10 spectroscopically confirmed galaxies. We compare spatial distributions of submillimeter galaxies at z ≃ 4-6 with our z = 5.7 galaxies forming the large-scale structures, and detect a 99.97% signal of cross-correlation, indicative of a clear coincidence of dusty star-forming galaxy and dust-unobscured galaxy formation at this early epoch. The galaxies in z57OD and z66OD are actively forming stars with star-formation rates (SFRs) >=5 times higher than the main sequence, and particularly the SFR density in z57OD is 10 times higher than the cosmic average at the redshift (a.k.a. the Madau-Lilly plot). Comparisons with numerical simulations suggest that z57OD and z66OD are protoclusters that are progenitors of the present-day clusters with halo masses of ∼1014 M.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: formation - galaxies: high-redshift

Status at CDS : Examining the need for a new acronym. // All or part of tables of objects will be ingested in SIMBAD with priority 1.

CDS comments: Table 3: Not all protoclusters are in SIMBAD.

Simbad objects: 30

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2019ApJ...883..142H and select 'bookmark this link' or equivalent in the popup menu


2021.05.14-08:14:01

© Université de Strasbourg/CNRS

    • Contact