LRD Watch DR1 · catalog object
LRDW J123707.59+621258.0
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.
Spectral energy distribution
- NIRCam wide
- NIRCam medium
- 2σ upper limit (S/N < 2)
At a glance
- Tier
- SILVER main class
- Found by
- BH* channel
- Redshift
- 4.769 DJA grade 3, PRISM
- Spectral shape
- inconclusive de Graaff+25 criteria
- F444W
- 26.24 AB S/N 29, 0.16″ aperture
- F277W − F444W
- not in the colour lane
- BH* share
- 0.91 bhs_bb4200_b8; Δχ² galaxy 4.5, dwarf 8.2
- Compactness
- growth ratio 1.768 stars 2.357
- Balmer break
- not measured
- Image vetting
- half-stack pass; no flags raised
- Literature
- 1 catalogue(s), 1 AGN paper(s) within 0.133″
Vetting
- Image vettingpassed
- Half-stack testpass
- Artifact risknone
- Neighbournone
- Extendedno
- BH* channelevidence dchi2_gal=4.5 dchi2_bd=8.2
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 | 4.7689 | diver-gdn-02-v4_prism-clear_8018_1120816.spec.fits |
z_vet | Adopted by vetting | 4.7689 | zspec:dja_specz_grade3.csv:1120816 |
z_phot | Photometric (P(z) peak) | — | not fitted |
z_bhs | BH* channel fit | 4.731 | bhs_bb4200_b8 |
z_agn | Colour-lane fit | — | — |
Spectral checks
- V-shape (spectrum)
- inconclusive
- Star (spectrum)
- no
- V-shape (photometry)
- not measurable βUV not measured, βopt not measured at z_agn
- Line in F410M
- none 1 line-free optical band(s)
- Line-ambiguous
- no
- Settling verdict
- not evaluated
Literature
Published objects within 1″ of this position. A match is a positional recovery, not an adopted classification.
- Rinaldi et al. (2024)
- Lin+2025 GOODS-N broad-line AGN
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 | 14.44 | 5.47 | 28.50 | 2.6 | 1.33–1.36 |
| F150W | NIRCam wide | 1.501 | 10.50 | 2.39 | 28.85 | 4.4 | 1.19–1.33 |
| F182M | NIRCam medium | 1.845 | 9.39 | 4.64 | 28.97 | 2.0 | 1.34–1.44 |
| F210M | NIRCam medium | 2.095 | 13.62 | 5.89 | 28.57 | 2.3 | 1.37–1.46 |
| F335M | NIRCam medium | 3.362 | 63.35 | 2.35 | 26.90 | 26.9 | 1.44–1.44 |
| F356W | NIRCam wide | 3.568 | 118.41 | 3.51 | 26.22 | 33.8 | 1.31–1.52 |
| F444W | NIRCam wide | 4.404 | 115.63 | 4.00 | 26.24 | 28.9 | 1.51–1.58 |
Provenance
- Field
- GOODS-N (JADES Medium/HST F4-F7); GOODS-N (JADES 1181 with FRESCO, CONGRESS, GO 4762 and GO 6434) (
1181,goods) - Programmes
01181, 01895, 02674, 02926, 03577, 04762, 05407, 06434behind 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 |
|---|---|---|---|
| F090W | jw01181-o004_t008_nircam_clear-f090w_i2d.fits | 0.031″ | 1.00 |
| F115W | jw01181-o004_t008_nircam_clear-f115w_i2d.fits | 0.031″ | 1.00 |
| F150W | jw01181-o006_t008_nircam_clear-f150w_i2d.fits | 0.031″ | 1.00 |
| F200W | jw01181-o004_t008_nircam_clear-f200w_i2d.fits | 0.031″ | 1.00 |
| F277W | jw01181-o004_t008_nircam_clear-f277w_i2d.fits | 0.063″ | 1.00 |
| F356W | jw01181-o004_t008_nircam_clear-f356w_i2d.fits | 0.063″ | 1.00 |
| F410M | jw01181-o004_t008_nircam_clear-f410m_i2d.fits | 0.063″ | 1.00 |
| F444W | jw01181-o004_t008_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 J123707.59+621258.0.
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.