Table · dataset · 2022
Low-surface-brightness galaxies from DES Y3
Listed in IVOA Registry (Virtual Observatory)
We present a catalog of 23790 extended low-surface-brightness galaxies (LSBGs) identified in ~5000{deg}^2^ from the first three years of imaging data from the Dark Energy Survey (DES).
Description
Based on a single-component Sersic model fit, we define extended LSBGs as galaxies with g-band effective radii R_eff_(g)>2.5" and mean surface brightness {mu}_eff_(g)>24.2mag/arcsec^2^}. We find that the distribution of LSBGs is strongly bimodal in (g-r) versus (g-i) color space.
We divide our sample into red (g-i>=0.60) and blue (g-i<0.60) galaxies and study the properties of the two populations. Redder LSBGs are more clustered than their blue counterparts and are correlated with the distribution of nearby (z<0.10) bright galaxies. Red LSBGs constitute ~33% of our LSBG sample, and ~30% of these are located within 1{deg} of low-redshift galaxy groups and clusters (compared to ~8% of the blue LSBGs).
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For nine of the most prominent galaxy groups and clusters, we calculate the physical properties of associated LSBGs assuming a redshift derived from the host system. In these systems, we identify 41 objects that can be classified as ultradiffuse galaxies, defined as LSBGs with projected physical effective radii R_eff_>1.5kpc and central surface brightness {mu}_0_(g)>24.0mag/arcsec^2^. The wide-area sample of LSBGs in DES can be used to test the role of environment on models of LSBG formation and evolution.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/252/18 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021ApJS..252...18T ui.adsabs.harvard.edu/abs/2021ApJS..252...18T ↗
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/252/18 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 75% · Imaging 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/252/18 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (75%) |
| 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 | |
| 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 |