CERIN AMROTH · RESEARCH

LRD Watch DR1 · catalog object

LRDW J001353.49-302107.7

catalogTENTATIVEBH* channelcolour laneAbell 2744 (UNCOVER)
RA 00:13:53.493 3.4728865°
Dec −30:21:07.72 -30.3521437°
SIMBAD within 2″ · ESASky

Images

F090W image, 3.2 arcsec across, north up
F090W0.02″ px
F115W image, 3.2 arcsec across, north up
F115W0.02″ px
F150W image, 3.2 arcsec across, north up
F150W0.02″ px
F200W image, 3.2 arcsec across, north up
F200W0.02″ px
F277W image, 3.2 arcsec across, north up
F277W0.04″ px
F356W image, 3.2 arcsec across, north up
F356W0.04″ px
F444W image, 3.2 arcsec across, north up
F444W0.04″ 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 F410M.

Spectral energy distribution

11.523451030100300150020003000400050006000Balmer limitrest frame (Å) at z = 5.619, adopted by vettingobserved wavelength (µm)flux density (nJy)
  • NIRCam wide
  • 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 = 5.619.

At a glance

Tier
TENTATIVE
Found by
BH* channel + colour lane
Redshift
5.62 photometric
Spectral shape
no labelled spectrum
F444W
24.55 AB S/N 340, 0.16″ aperture
F277W − F444W
1.18 mag strict redness
BH* share
0.88 mom_naidu25; Δχ² galaxy 2.3, dwarf 70.5
Compactness
growth ratio 1.660 stars 2.280
Balmer break
3.70 ± 0.14 F277W/F200W, clean
Image vetting
half-stack pass; 1 flag(s)
Literature
1 catalogue(s), 0 AGN paper(s) within 0.066″

Vetting

  • Image vettingnot applicable
  • Half-stack testpass
  • Artifact riskflagged
  • Neighbournone
  • Extendedno
  • colour laneartifact-risk mosaic-edge d=0.29" < 0.3" (F444W abell2744clu-grizli-v7.2-f444w-clear_drc_sci.fits)
  • BH* channelevidence dchi2_gal=2.3 dchi2_bd=70.5
  • BH* channelartifact-risk mosaic-edge d=0.29" < 0.3" (F444W abell2744clu-grizli-v7.2-f444w-clear_drc_sci.fits)

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).

ColumnWhat it iszSource
z_specSpectroscopic, DJA grade 3——
z_vetAdopted by vetting5.6190pz:z_map
z_photPhotometric (P(z) peak)5.61968%: 4.646–5.788
z_bhsBH* channel fit5.693mom_naidu25
z_agnColour-lane fit5.62AGN-inclusive templates

Spectral checks

V-shape (spectrum)
no labelled spectrum
Star (spectrum)
no spectrum
V-shape (photometry)
passes βUV −1.10, βopt 0.35 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.

  • Labbé et al. (2025)

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.

BandInstrumentPivot (µm)f (nJy)σ (nJy)AB magS/NAp. corr.
F090WNIRCam wide0.90233.001.7027.6019.41.48
F115WNIRCam wide1.15438.861.7327.4322.51.45
F150WNIRCam wide1.50149.272.1227.1723.21.46
F200WNIRCam wide1.98950.171.8127.1527.61.48
F277WNIRCam wide2.762185.752.1025.7388.51.58
F444WNIRCam wide4.404550.551.6224.55339.61.69

Provenance

Field
Abell 2744 (UNCOVER) (a2744uncover)
Programmes
01324, 02561, 02756, 02883, 03516, 03538, 03990, 04111, 04530, 06123, 06743, 06761, 11689, 13495 behind every mosaic the field measured
Pipeline rows merged
3 all at one position
Detection pass
original
Release build
33af9933d1cc 2026-10-17T14:29:44Z

Image sources

BandMosaicNative pixelCoverage
F090Wabell2744clu-grizli-v7.2-f090w-clear_drc_sci.fits0.020″1.00
F115Wabell2744clu-grizli-v7.2-f115w-clear_drc_sci.fits0.020″1.00
F150Wabell2744clu-grizli-v7.2-f150w-clear_drc_sci.fits0.020″1.00
F200Wabell2744clu-grizli-v7.2-f200w-clear_drc_sci.fits0.020″1.00
F277Wabell2744clu-grizli-v7.2-f277w-clear_drc_sci.fits0.040″0.58
F356Wabell2744clu-grizli-v7.2-f356w-clear_drc_sci.fits0.040″0.48
F444Wabell2744clu-grizli-v7.2-f444w-clear_drc_sci.fits0.040″0.59

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 J001353.49-302107.7.

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.