Table · dataset · 2024
Deep u'g'r' obs. of galaxies in A262 & A1656
Listed in IVOA Registry (Virtual Observatory)
In this study, we compare the structural parameters of ultradiffuse galaxies (UDGs) to those of other dwarf galaxies and investigate whether UDGs form a distinct population.
Description
We observed deep u'-, g'-, and r'-band images (maximum limiting surface brightness [3{sigma}, 10"x10"] u' and g': ~30mag/arcsec^2^; r': ~29mag/arcsec^2^) of A1656 (Coma cluster) and A262 with the Wendelstein Wide Field Imager at the 2.1m Fraunhofer Wendelstein Telescope at the Wendelstein Observatory.
We measure u'-g' and g'-r' colors and structural parameters using parametric fitting of tens of thousands of potential UDGs and other dwarf galaxies. Cluster members are identified and separated from diffuse background galaxies based on red sequence membership and location in the u'-g' versus g'-r' color-color diagram. We find 11 UDGs in A262 and 48 UDGs in A1656.
Read the rest (2 more)
The latter is 6 times more than van Dokkum+ 2015ApJ...798L..45V found in the overlapping region. By comparing the structural parameters of UDGs to non-UDGs in our sample and to spheroidals from the literature, we do not find any separation in all tested parameter spaces. Instead, UDGs form the diffuse end of the already well-known spheroidal population and slightly extend it.
Furthermore, we find that the UDG definition used by Koda+ 2015ApJ...807L...2K and Yagi+ 2016, J/ApJS/225/11 mainly extends the definition by van Dokkum et al. toward ordinary spheroidals.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/271/52 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024ApJS..271...52Z ui.adsabs.harvard.edu/abs/2024ApJS..271...52Z ↗
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/271/52 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 70% · Image 65%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apjs/271/52 | 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 (70%) |
| 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:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (65%) |
| 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 |