# LRDW J131124.16-012204.4 — Cerin Amroth

Source: https://cerinamroth.com/jwst/lrds/dr1/j131124.16-012204.4/

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LRD Watch DR1 · candidate

 

# LRDW J131124.16-012204.4

 

candidate tableSILVERmain classcolour laneAbell 1689

 

 

 

RA 13:11:24.166 197.8506925°

 

Dec −01:22:04.49 -1.3679151°

 

[SIMBAD within 2″](https://simbad.cds.unistra.fr/simbad/sim-coo?Coord=197.850693+-1.367915&Radius=2&Radius.unit=arcsec) · [ESASky](https://sky.esa.int/esasky/?target=197.850693%20-1.367915&fov=0.02&sci=true)

 

  

 

## Images

 

No image stamps: the mosaics this object was measured on are not on disk.

 

 

 

  

## Spectral energy distribution

  
- NIRCam wide
- NIRCam medium
- 2σ upper limit (S/N < 2)

 Aperture fluxes in a 0.16″-radius circle, not corrected to total; the values are in the photometry table below. The gold line marks the Balmer limit (3646 Å rest) at z = 1.200.  

 

## At a glance

 

TierSILVER main class

Found bycolour lane

Redshift1.20 colour-lane fit

Spectral shapeno labelled spectrum

F444W27.70 AB S/N 10, 0.16″ aperture

F277W − F444W2.17 mag strict redness

BH* sharenot in the BH* channel

CompactnessFWHM 0.166″

Balmer breaknot measured

Image vettinghalf-stack pass; no flags raised

Literatureno 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 | 1.2000 | z_agn
 | `z_phot` | Photometric (P(z) peak) | 9.074 | 68%: 9.002–12.047
 | `z_bhs` | BH* channel fit | — | —
 | `z_agn` | Colour-lane fit | 1.20 | AGN-inclusive templates

 

 

 

 

 

## Spectral checks

 

V-shape (spectrum)no labelled spectrum

Star (spectrum)no spectrum

V-shape (photometry)not measurable βUV not measured, βopt not measured at z_agn

Line in F410Mnone 0 line-free optical band(s)

Line-ambiguousno

Settling verdictnot evaluated

 

 

 

## 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.
 | F090W | NIRCam wide | 0.902 | 8.83 | 6.69 | 29.04 | 1.3 | 1.18
 | F115W | NIRCam wide | 1.154 | 9.14 | 3.67 | 29.00 | 2.5 | 1.16
 | F150W | NIRCam wide | 1.501 | 53.14 | 7.97 | 27.09 | 6.7 | 1.11–1.14
 | F182M | NIRCam medium | 1.845 | 0.47 | 3.25 | 32.22 | 0.1 | 1.17
 | F200W | NIRCam wide | 1.989 | 1.73 | 2.82 | 30.81 | 0.6 | 1.16
 | F210M | NIRCam medium | 2.095 | 65.17 | 8.64 | 26.86 | 7.5 | 1.12
 | F277W | NIRCam wide | 2.762 | 4.06 | 1.77 | 29.88 | 2.3 | 1.29
 | F300M | NIRCam medium | 2.990 | −0.72 | 2.14 | — | −0.3 | 1.28
 | F356W | NIRCam wide | 3.568 | 25.78 | 3.65 | 27.87 | 7.1 | 1.28–1.32
 | F410M | NIRCam medium | 4.082 | 19.65 | 4.54 | 28.17 | 4.3 | 1.28
 | F444W | NIRCam wide | 4.404 | 30.09 | 3.09 | 27.70 | 9.7 | 1.34

 

 

 

## Provenance

 

 FieldAbell 1689 (`a1689`) Programmes`05782, 06882` behind every mosaic the field measured Pipeline rows merged2 all at one position Detection passoriginal Release build`33af9933d1cc` 2026-10-17T14:29:44Z 

 

 

 

## 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 J131124.16-012204.4.

 

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](https://cerinamroth.com/jwst/lrds/dr1/).

 

 [← LRDW J131110.01-030813.8](https://cerinamroth.com/jwst/lrds/dr1/j131110.01-030813.8/)[LRDW J131435.94+243318.5 →](https://cerinamroth.com/jwst/lrds/dr1/j131435.94+243318.5/)