Table · dataset · 2026
MUSE UDF. V. Mass-metallicities at z~1-2
Listed in IVOA Registry (Virtual Observatory)
Using more than 100 galaxies in the MUSE Ultra Deep Field with spectroscopy from the Hubble Space Telescope's (HST) WFC3 and the Very Large Telescope's Multi Unit Spectroscopic Explorer (MUSE), we extend the gas-phase mass-metallicity relation (MZR) at z~1-2 down to stellar masses of M*~10^7.5^M_{sun}_.
Description
The sample reaches 6 times lower in stellar mass and star formation rate (SFR) than previous HST studies at these redshifts, and we find that galaxy metallicities decrease to log(O/H)+12~7.8+/-0.1 (15% solar) at log(M*/M_{sun}_)~7.5, without evidence of a turnover in the shape of the MZR at low masses.
We validate our strong-line metallicities using the direct method for sources with [OIII]{lambda}4363 and [OIII]{lambda}1666 detections, and find excellent agreement between the techniques. The [OIII]{lambda}1666-based metallicities double existing measurements with a signal-to-noise ratio >=5 for unlensed sources at z>1, validating the strong-line calibrations up to z~2.5. We confirm that the MZR resides ~0.3dex lower in metallicity than local galaxies and is consistent with the fundamental metallicity relation if the low-mass slope varies with SFR.
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At lower redshifts (z~0.5) our sample reaches ~0.5dex lower in SFR than current calibrations and we find enhanced metallicities that are consistent with extrapolating the MZR to lower SFRs. Finally, we detect only an ~0.1dex difference in the metallicities of galaxies in groups versus isolated environments. These results are based on robust calibrations and reach the lowest masses and SFRs that are accessible with HST, providing a critical foundation for studies with the Webb and Roman Space Telescopes.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/966/228 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024ApJ...966..228R ui.adsabs.harvard.edu/abs/2024ApJ...966..228R ↗
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/966/228 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/966/228 | 10 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:optical | 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 |