Table · dataset · 2023
MORA: ALMA 2mm survey
Listed in IVOA Registry (Virtual Observatory)
We present the characteristics of 2mm selected sources from the largest Atacama Large Millimeter/submillimeter Array (ALMA) blank-field contiguous survey conducted to date, the Mapping Obscuration to Reionization with ALMA (MORA) survey covering 184arcmin^2^ at 2mm.
Description
Twelve of 13 detections above 5{sigma} are attributed to emission from galaxies, 11 of which are dominated by cold dust emission. These sources have a median redshift of <z_2mm_>=3.6_-0.3_^+0.4^ primarily based on optical/near-infrared photometric redshifts with some spectroscopic redshifts, with 77%+/-11% of sources at z>3 and 38%+/-12% of sources at z>4.
This implies that 2mm selection is an efficient method for identifying the highest-redshift dusty star-forming galaxies (DSFGs). Lower-redshift DSFGs (z<3) are far more numerous than those at z>3 yet are likely to drop out at 2mm. MORA shows that DSFGs with star formation rates in excess of 300M_{sun}_/yr and a relative rarity of ~10^-5^Mpc^-3^ contribute ~30% to the integrated star formation rate density at 3<z<6.
Read the rest (1 more)
The volume density of 2mm selected DSFGs is consistent with predictions from some cosmological simulations and is similar to the volume density of their hypothesized descendants: massive, quiescent galaxies at z>2. Analysis of MORA sources' spectral energy distributions hint at steeper empirically measured dust emissivity indices than reported in typical literature studies, with <{beta}>=2.2_-0.4_^+0.5^. The MORA survey represents an important step in taking census of obscured star formation in the universe's first few billion years, but larger area 2mm surveys are needed to more fully characterize this rare population and push to the detection of the universe's first dusty galaxies.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/923/215 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021ApJ...923..215C ui.adsabs.harvard.edu/abs/2021ApJ...923..215C ↗
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/923/215 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Infrared · Millimeter · Radio
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/923/215 | 12 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 | |
| concepts[modality].ivoa_waveband:millimeter | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:radio | 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 |