# LRDW J141947.76+525106.2 — Cerin Amroth

Source: https://cerinamroth.com/jwst/lrds/dr1/j141947.76+525106.2/

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LRD Watch DR1 · catalog object

 

# LRDW J141947.76+525106.2

 

catalogTENTATIVEBH* channelEGS (CEERS NIRSpec P9)

 

 

 

RA 14:19:47.761 214.9490061°

 

Dec +52:51:06.28 52.8517447°

 

[SIMBAD within 2″](https://simbad.cds.unistra.fr/simbad/sim-coo?Coord=214.949006++52.851745&Radius=2&Radius.unit=arcsec) · [ESASky](https://sky.esa.int/esasky/?target=214.949006%20+52.851745&fov=0.02&sci=true)

 

  

 

## Images

 

 F115W image, 3.2 arcsec across, north up 

F115W0.03″ px

 F150W image, 3.2 arcsec across, north up 

F150W0.03″ px

 F200W image, 3.2 arcsec across, north up 

F200W0.03″ px

 F410M image, 3.2 arcsec across, north up 

F410M0.06″ px

 F444W image, 3.2 arcsec across, north up 

F444W0.06″ px

 

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, F277W, F356W.

 

 

 

  

## 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 = 3.720.  

 

## At a glance

 

TierTENTATIVE 

Found byBH* channel

Redshift3.720 DJA grade 3, grating

Spectral shapeno PRISM spectrum de Graaff+25 criteria

F444W24.73 AB S/N 209, 0.16″ aperture

F277W − F444Wnot in the colour lane

BH* share0.83 bhs_bb4800_b8; Δχ² galaxy 1.1, dwarf 20.8

Compactnessgrowth ratio 1.740 stars 2.352

Balmer break4.48 ± 0.98 F200W/F150W, clean

Image vettinghalf-stack pass; no flags raised

Literature2 catalogue(s), 2 AGN paper(s) within 0.027″

 

 

 

 

 

## Vetting

 
- Image vettingnot applicable
- Half-stack testpass
- Artifact risknone
- Neighbournone
- Extendedno

 
- BH* channelevidence dchi2_gal=1.1 dchi2_bd=20.8

 

 

 

## 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 | 3.7197 | valentino-egs-v4_g235m-f170lp_3567_20910.spec.fits
 | `z_vet` | Adopted by vetting | 3.7197 | zspec:dja_specz_grade3.csv:20910
 | `z_phot` | Photometric (P(z) peak) | — | not fitted
 | `z_bhs` | BH* channel fit | 4.086 | bhs_bb4800_b8
 | `z_agn` | Colour-lane fit | — | —

 

 

 

 

 

## Spectral checks

 

V-shape (spectrum)no PRISM spectrum

Star (spectrum)no

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

Line in F410Mnone 1 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.

 
- Kokorev et al. (2024)
- Weibel et al. (2026), BH*-dominated sample
- Baccus+2026 (DJA census) broad-line AGN
- Kocevski+2026 Skyfire 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 | 14.49 | 3.59 | 28.50 | 4.0 | 1.40
 | F150W | NIRCam wide | 1.501 | 15.08 | 3.22 | 28.45 | 4.7 | 1.43
 | F200W | NIRCam wide | 1.989 | 67.63 | 2.86 | 26.82 | 23.6 | 1.42
 | F410M | NIRCam medium | 4.082 | 445.10 | 4.46 | 24.78 | 99.7 | 1.56
 | F430M | NIRCam medium | 4.281 | 442.58 | 7.53 | 24.79 | 58.8 | 1.63
 | F444W | NIRCam wide | 4.404 | 466.80 | 2.23 | 24.73 | 209.0 | 1.60

 

 

 

## Provenance

 

 FieldEGS (CEERS NIRSpec P9) (`ceersnirspecp9mrmsata`) Programmes`01345, 08559` behind every mosaic the field measured Pipeline rows merged1 all at one position Detection passoriginal Release build`33af9933d1cc` 2026-10-17T14:29:44Z 

 

## Image sources

 | Band | Mosaic | Native pixel | Coverage
 | F115W | `jw01345-o069_t046_nircam_clear-f115w_i2d.fits` | 0.031″ | 1.00
 | F150W | `jw01345-o069_t046_nircam_clear-f150w_i2d.fits` | 0.031″ | 1.00
 | F200W | `jw01345-o069_t046_nircam_clear-f200w_i2d.fits` | 0.031″ | 1.00
 | F410M | `jw01345-o069_t046_nircam_clear-f410m_i2d.fits` | 0.063″ | 1.00
 | F444W | `jw01345-o069_t046_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 J141947.76+525106.2.

 

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 J141944.93+525755.2](https://cerinamroth.com/jwst/lrds/dr1/j141944.93+525755.2/)[LRDW J141947.80+525750.8 →](https://cerinamroth.com/jwst/lrds/dr1/j141947.80+525750.8/)