Table · dataset · 2025
Circumgalactic Ly{alpha} Nebulae at Cosmic Noon
Listed in IVOA Registry (Virtual Observatory)
Circumgalactic Ly{alpha} nebulae are gaseous halos around galaxies exhibiting luminous extended Ly{alpha} emission.
Description
This work investigates Ly{alpha} nebulae from deep imaging of ~12 deg2 sky, targeted by the MAMMOTH-Subaru survey. Utilizing the wide-field capability of Hyper Suprime-Cam, we present one of the largest blind Ly{alpha} nebula selections, including QSO nebulae, Ly{alpha} blobs, and radio galaxy nebulae down to the typical 2{sigma} Ly{alpha} surface brightness of (5-10)x10^-18^erg/s/cm^2^/arcsec^2^.
The sample contains 117 nebulae with Ly{alpha} sizes of 40-400kpc, and the most gigantic one spans about 365kpc, and is referred to as the Ivory Nebula. Combining multiwavelength data, we investigate diverse nebula populations and associated galaxies. We find a small fraction of Ly{alpha} nebulae have QSOs (~7%), luminous infrared galaxies (LIRGs; ~1%), and radio galaxies (~2%).
Read the rest (2 more)
Remarkably, among the 28 enormous Ly{alpha} nebulae (ELANe) exceeding 100kpc, about 80% are associated with UV-faint galaxies (M_UV_>-22), and are categorized as Type II ELANe. We underscore that Type II ELANe constitute the majority but remain largely hidden in current galaxy and QSO surveys. Dusty starburst and obscured AGN activity are proposed to explain the nature of Type II ELANe.
The spectral energy distribution of stacking all Ly{alpha} nebulae also reveals signs of massive dusty star-forming galaxies with obscured AGNs. We propose a model to explain the dusty nature where the diverse populations of Ly{alpha} nebulae capture massive galaxies at different evolutionary stages undergoing violent assembly. Ly{alpha} nebulae provide critical insights into the formation and evolution of today's massive cluster galaxies at cosmic noon.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/275/27 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024ApJS..275...27L ui.adsabs.harvard.edu/abs/2024ApJS..275...27L ↗
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/apjs/275/27 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Uv
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Imaging 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/275/27 | 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:uv | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:imaging | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (75%) |
| 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 |