Table · dataset · 2022
Ly{alpha} emitters and QSOs in COMSOS and EGS fields
Listed in IVOA Registry (Virtual Observatory)
We present cosmological (30-400Mpc) distributions of neutral hydrogen (HI) in the intergalactic medium (IGM) traced by Ly{alpha} emitters (LAEs) and QSOs at z=2.1-2.5, selected with the data of the ongoing Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) and the eBOSS survey.
Description
Motivated by a previous study of Mukae et al., we investigate spatial correlations of LAEs and QSOs with HI tomography maps reconstructed from HI Ly{alpha} forest absorption in the spectra of background galaxies and QSOs obtained by the CLAMATO survey and this study, respectively.
In the cosmological volume far from QSOs, we find that LAEs reside in regions of strong HI absorption, i.e., HI rich, which is consistent with results of previous galaxy-background QSO pair studies. Moreover, there is an anisotropy in the HI distribution plot of transverse and line-of-sight distances; on average the HI absorption peak is blueshifted by ~200km/s from the LAE Ly{alpha} redshift, reproducing the known average velocity offset between the Ly{alpha} emission redshift and the galaxy systemic redshift.
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We have identified a ~40Mpc scale volume of HI underdensity that is a candidate for a giant HII bubble, where six QSOs and an LAE overdensity exist at <z>=2.16. The coincidence of the QSO and LAE overdensities with the HI underdensity indicates that the ionizing photon radiation of the QSOs has created a highly ionized volume of multiple proximity zones in a matter overdensity. Our results suggest an evolutionary picture where H i gas in an overdensity of galaxies becomes highly photoionized when QSOs emerge in the galaxies.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/903/24 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2020ApJ...903...24M ui.adsabs.harvard.edu/abs/2020ApJ...903...24M ↗
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/903/24 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- 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/903/24 | 11 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:optical | 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 |