Table · dataset · 2023
Massive passive galaxies at the Cosmic Dawn
Listed in IVOA Registry (Virtual Observatory)
We search the five CANDELS fields (COSMOS, EGS, GOODS-North, GOODS-South, and UDS) for passively evolving a.k.a. 'red and dead' massive galaxies in the first 2Gyr after the big bang, integrating and updating the work on GOODS-South presented in a previous paper.
Description
We perform SED-fitting on photometric data, with top-hat star-formation histories to model an early and abrupt quenching, and using a probabilistic approach to select only robust candidates.
Using libraries without (with) spectral lines emission, starting from a total of more than 20000 z>3 sources we end up with 102 (40) candidates, including one at z=6.7. This implies a minimal number density of 1.73+/-0.17x10^-5^ (6.69+/-1.08x10^-6^)Mpc^-3^ for 3<z<5; applying a correction factor to account for incompleteness yields 2.30+/-0.20x10^-5^. We compare these values with those from five recent hydrodynamical cosmological simulations, finding a reasonable agreement at z<4; tensions arise at earlier epochs.
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Finally, we use the star-formation histories from the best-fitting models to estimate the contribution of the high-redshift passive galaxies to the global star formation rate density during their phase of activity, finding that they account for ~5-10 per cent of the total star formation at 3<z<8, despite being only ~0.5 per cent of the total in number. The resulting picture is that early and strong star formation activity, building massive galaxies on short time-scales and followed by a quick and abrupt quenching, is a rare but crucial phenomenon in the early Universe: the evolution of the cosmos must be heavily influenced by the short but powerful activity of these pristine monsters.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/490/3309 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2019MNRAS.490.3309M ui.adsabs.harvard.edu/abs/2019MNRAS.490.3309M ↗
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/mnras/490/3309 ↗
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/mnras/490/3309 | 15 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 |