Table · dataset · 2022
33 Optically faint galaxies
Listed in IVOA Registry (Virtual Observatory)
We present a sample of 33 Balmer break galaxies (BBGs) selected as Hubble Space Telescope/F160W dropouts in the deepest CANDELS/GOODS fields (H>=27.3mag) but relatively bright in Spitzer/IRAC ([3.6], [4.5] <24.5mag), implying red colors (median and quartiles: <H-[3.6]>=3.1_2.8_^3.4^mag).
Description
Half of these BBGs are newly identified sources. Our BBGs are massive (<log(M/M_{sun}_)>=10.8_10.4_^11.0^), high-redshift (<z>=4.8_4.4_^5.1^), dusty (<A(V)>=2.0_1.5_^2.0^mag) galaxies.
The spectral energy distributions (SEDs) of half of our sample indicate that they are star-forming galaxies with typical specific star formation rates (SFRs) of 0.5-1.0Gyr^-1^, qualifying them as main-sequence (MS) galaxies at 3<z<6. One-third of these SEDs indicate the presence of prominent emission lines (H{beta}+[OIII], H{alpha}+[NII]) boosting the IRAC fluxes and red colors. Approximately 20% of the BBGs are very dusty (A(V)~2.5mag) starbursts with strong mid-to-far-infrared detections and extreme SFRs (SFR>10^3^M_{sun}_/yr) that place them above the MS.
Read the rest (2 more)
The rest, 30%, are post-starbursts or quiescent galaxies located >2{sigma} below the MS with mass-weighted ages older than 700Myr. Only two of the 33 galaxies are X-ray-detected active galactic nuclei (AGNs) with optical/near-infrared SEDs dominated by stellar emission, but the presence of obscured AGNs in the rest of the sources cannot be discarded. Our sample accounts for 8% of the total number density of log(M/M_{sun}_)>10 galaxies at z>3, but it is a significant contributor (30%) to the general population of red log(M/M_{sun}_)> 11 galaxies at 4<z<6.
Finally, our results point out that one of every 30 massive log(M/M_{sun}_)> 11 galaxies in the local universe was assembled in the first 1.5Gyr after the big bang, a fraction that is not reproduced by state-of-the-art galaxy formation simulations.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/876/135 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2019ApJ...876..135A ui.adsabs.harvard.edu/abs/2019ApJ...876..135A ↗
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/apj/876/135 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/876/135 | 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 | |
| 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 |