Table · dataset · 2026
CANDELS galaxy SED fitting parameters
Listed in IVOA Registry (Virtual Observatory)
Robust estimation of star formation rates (SFRs) at higher redshifts (z>~1) using UV-optical-near-infrared (NIR) photometry is contingent on the ability of spectral energy distribution (SED) fitting to constrain the dust attenuation, stellar metallicity, and star formation history (SFH) simultaneously.
Description
IR-derived dust luminosities can help break the degeneracy between these parameters, but IR data are often not available.
Here, we explore strategies for SED fitting at z>~1 in the absence of IR data using a sample of log M_*_>10.2 star-forming galaxies from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) for which 24{mu}m data are available. We adopt the total IR luminosity (L_TIR_) obtained from 24{mu}m as the "ground truth," which allows us to assess how well it can be recovered (as L_dust_) from UV-optical-NIR SED fitting.
Read the rest (2 more)
We test a variety of dust attenuation models, stellar population synthesis models, metallicity assumptions, and SFHs separately to identify which assumptions maximize the agreement (correlation and linearity) between LTIR and Ldust. We find that a flexible dust attenuation law performs best. For stellar populations, we find that Bruzual & Charlot (2003MNRAS.344.1000B) models are favored over those of Eldridge+ (2017PASA...34...58E).
Fixing the stellar metallicity at solar value is preferred to other fixed values or leaving it as a free parameter. For SFHs, we find that minimizing the variability in the recent (<100Myr) SFH improves the agreement with LTIR. Finally, we provide a catalog of galaxy parameters (including M* and SFR) for CANDELS galaxies with logM*>8 and 0.7<z<1.3, obtained using the models we found to be the most robust.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/962/59 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024ApJ...962...59O ui.adsabs.harvard.edu/abs/2024ApJ...962...59O ↗
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/962/59 ↗
catalogue entry · from IVOA Registry
Topics
- 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/962/59 | 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 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:uv | 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 |