LRD Watch DR1 · candidate
LRDW J142004.44+524552.8
Images
3.2″ across, north up, east left, resampled from the deepest mosaic covering the object in each band; ticks mark the catalogue position. Each band is stretched on its own noise; the composite shares one flux scale, so its colour is real. No coverage in F090W, F410M.
Spectral energy distribution
- NIRCam wide
- 2σ upper limit (S/N < 2)
At a glance
- Tier
- SILVER main class
- Found by
- colour lane
- Redshift
- 7.08 photometric
- Spectral shape
- no labelled spectrum
- F444W
- 27.97 AB S/N 16, 0.16″ aperture
- F277W − F444W
- 1.11 mag strict redness
- BH* share
- not in the BH* channel
- Compactness
- FWHM 0.181″
- Balmer break
- 1.82 ± 0.45 F356W/F200W, red:Hb+OIII+blue:far-uv
- Image vetting
- half-stack pass; no flags raised
- Literature
- no published match within 1″
Vetting
- Image vettingpassed
- Half-stack testpass
- Artifact risknone
- Neighbournone
- Extendedno
- No vetting notes.
Redshifts
Each redshift keeps its own column. Photometric redshifts of little red dots are unreliable: against spectra, about a third of AGN-template redshifts (z_agn; 31 of 95 in the last purity run) and about half of galaxy-template redshifts at z > 3 were catastrophic outliers (methods Section 8).
| Column | What it is | z | Source |
|---|---|---|---|
z_spec | Spectroscopic, DJA grade 3 | — | — |
z_vet | Adopted by vetting | 7.0850 | pz:z_map |
z_phot | Photometric (P(z) peak) | 7.085 | 68%: 2.390–7.876 |
z_bhs | BH* channel fit | — | — |
z_agn | Colour-lane fit | 2.42 | AGN-inclusive templates |
Spectral checks
- V-shape (spectrum)
- no labelled spectrum
- Star (spectrum)
- no spectrum
- V-shape (photometry)
- not measurable βUV not measured, βopt −2.83 at z_agn
- Line in F410M
- Hb, OIII 0 line-free optical band(s)
- Line-ambiguous
- yes
- Settling verdict
- inconclusive
Literature
Published objects within 1″ of this position. A match is a positional recovery, not an adopted classification.
- No published JWST little red dot or broad-line AGN within 1″.
Photometry
Circular aperture of radius 0.16″ at each band's native resolution, background from a 0.40–0.65″ annulus, programmes combined by inverse variance. For a point source multiply by the field's aperture correction (r = 0.16″ → 0.70″). Grey rows are below S/N 2.
| Band | Instrument | Pivot (µm) | f (nJy) | σ (nJy) | AB mag | S/N | Ap. corr. |
|---|---|---|---|---|---|---|---|
| F115W | NIRCam wide | 1.154 | 8.69 | 2.72 | 29.05 | 3.2 | 1.31 |
| F150W | NIRCam wide | 1.501 | 9.87 | 2.15 | 28.91 | 4.6 | 1.33 |
| F200W | NIRCam wide | 1.989 | 7.81 | 1.83 | 29.17 | 4.3 | 1.36–1.36 |
| F277W | NIRCam wide | 2.762 | 8.48 | 1.28 | 29.08 | 6.6 | 1.49 |
| F356W | NIRCam wide | 3.568 | 14.20 | 1.21 | 28.52 | 11.7 | 1.52 |
| F444W | NIRCam wide | 4.404 | 23.59 | 1.47 | 27.97 | 16.0 | 1.60 |
Provenance
- Field
- EGS (CAPERS P4) (
jw06368o053) - Programmes
06368, 06434, 08410behind every mosaic the field measured- Pipeline rows merged
- 2 all at one position
- Detection pass
- original
- Release build
33af9933d1cc2026-10-17T14:29:44Z
Image sources
| Band | Mosaic | Native pixel | Coverage |
|---|---|---|---|
| F115W | jw06368-o053_t056_nircam_clear-f115w_i2d.fits | 0.031″ | 1.00 |
| F150W | jw06368-o053_t056_nircam_clear-f150w_i2d.fits | 0.031″ | 1.00 |
| F200W | jw06368-o053_t056_nircam_clear-f200w_i2d.fits | 0.031″ | 1.00 |
| F277W | jw06368-o053_t056_nircam_clear-f277w_i2d.fits | 0.063″ | 1.00 |
| F356W | jw06368-o053_t056_nircam_clear-f356w_i2d.fits | 0.063″ | 1.00 |
| F444W | jw06368-o053_t056_nircam_clear-f444w_i2d.fits | 0.063″ | 1.00 |
Cite
Anderson, Jordan (2026). LRD Watch DR1: little red dot candidates from an independent search of public JWST imaging (Version DR1) [Data set]. Cerin Amroth Research. Zenodo. https://doi.org/10.5281/zenodo.23062632 Object LRDW J142004.44+524552.8.
CC BY 4.0. Please also acknowledge the JWST programmes that took the data. LRD Watch DR1 is a vetted candidate catalogue, not a complete census: it has no selection function and cannot on its own give number densities. About the release.