Table · dataset · 2025
JCMT-SCUBA2 High rEdshift bRight quasaR surveY. II.
Listed in IVOA Registry (Virtual Observatory)
The formation of the first supermassive black holes is expected to have occurred in some most pronounced matter and galaxy overdensities in the early universe.
Description
We have conducted a submillimeter wavelength continuum survey of 54 z~6 quasars using the Submillimeter Common-User Bolometre Array-2 on the James Clerk Maxwell Telescope to study the environments around z~6 quasars. We identified 170 submillimeter galaxies (SMGs) with above 3.5{sigma} detections in 450 or 850{mu}m maps.
Their far-IR luminosities are (2.2-6.4)x10^12^L_{sun}_, and their star formation rates are ~400-1200M_{sun}_/yr. We also calculated the SMGs' differential and cumulative number counts in a combined area of ~620arcmin^2^. To a 4{sigma} detection (at ~5.5mJy), SMGs' overdensity is 0.68_-0.19_^+0.21^(+/-0.19), exceeding the blank-field source counts by a factor of 1.68.
Read the rest (2 more)
We find that 13/54 quasars show overdensities (at ~5.5mJy) of {delta}_SMG_~1.5-5.4. The combined area of these 13 quasars exceeds the blank-field counts with the overdensity to 5.5mJy of {delta}_SMG_~2.46_-0.55_^+0.64^(+/-0.25) in the regions of ~150arcmin^2^. However, the excess is insignificant on the bright end (e.g., 7.5mJy).
We also compare results with previous environmental studies of Ly{alpha} emitters and Lyman break galaxies on a similar scale. Our survey presents the first systematic study of the environment of quasars at z~6. The newly discovered SMGs provide essential candidates for follow-up spectroscopic observations to test whether they reside in the same large-scale structures as the quasars and search for protoclusters at an early epoch.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/954/174 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023ApJ...954..174L ui.adsabs.harvard.edu/abs/2023ApJ...954..174L ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/apj/954/174 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Millimeter
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/954/174 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:millimeter | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |