Table · dataset · 2023
COSMOS2020; 230 quiescent galaxies at 3<z<5
Listed in IVOA Registry (Virtual Observatory)
We select and characterize a sample of massive (log(M*/M{sun})>10.6) quiescent galaxies (QGs) at 3<z<5 in the latest Cosmological Evolution Survey catalog (COSMOS2020).
Description
QGs are selected using a new rest-frame color-selection method, based on their probability of belonging to the quiescent group defined by a Gaussian mixture model (GMM) trained on rest-frame colors (NUV-U, U-V, V J) of similarly massive galaxies at 2<z<3.
We calculate the quiescent probability threshold above which a galaxy is classified as quiescent using simulated galaxies from the shark semi-analytical model. We find that, at z>=3 in shark, the GMM/NUVU-VJ method outperforms classical rest-frame UVJ selection and is a viable alternative. We select galaxies as quiescent based on their probability in COSMOS2020 at 3<z<5, and compare the selected sample to both UVJ- and NUVrJ-selected samples.
Read the rest (2 more)
We find that, although the new selection matches UVJ and NUVrJ in number, the overlap between color selections is only ~50%-80%, implying that rest-frame color commonly used at lower-redshift selections cannot be equivalently used at z>3. We compute median rest-frame spectral energy distributions for our sample and find the median QG at 3<z<5 has a strong Balmer/4000{AA} break, and residual NUV flux indicating recent quenching.
We find the number densities of the entire quiescent population (including post-starbursts) more than doubles from 3.5{+/-}2.2x10^-6^Mpc^-3^ at 4<z<5 to 1.4{+/-}0.4x10^-5^Mpc^-3^ at 3<z<4, confirming that the onset of massive galaxy quenching occurs as early as 3<z<5.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/165/248 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023AJ....165..248G ui.adsabs.harvard.edu/abs/2023AJ....165..248G ↗
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/aj/165/248 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/aj/165/248 | 14 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:infrared | 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 |