LRD Watch DR1 · candidate

LRDW J153459.49+232625.1

candidate tableSILVERmain classBH* channelPANORAMIC J153500+2325

RA 15:34:59.498 233.7479097°

Dec +23:26:25.17 23.4403254°

SIMBAD within 2″ · ESASky

Images

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

Colour composite: F444W red, F356W green, F277W blue, 3.2 arcsec across, north up — compositebar 1″

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)

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 = 7.133.

At a glance

Tier: SILVER main class
Found by: BH* channel
Redshift: 7.13 BH* fit
Spectral shape: no labelled spectrum
F444W: 27.18 AB S/N 13, 0.16″ aperture
F277W − F444W: not in the colour lane
BH* share: 1.00 bhs_bb4200_b8; Δχ² galaxy 7.7, dwarf 0.0
Compactness: growth ratio 1.221 stars 1.706
Balmer break: 2.13 (lower limit) F356W/F200W, red:Hb+OIII+blue:far-uv+blue:2sig-limit
Image vetting: half-stack no-coverage; no flags raised
Literature: no published match within 1″

Vetting

Image vettingpassed
Half-stack testno-coverage
Artifact risknone
Neighbournone
Extendedno

BH* channelevidence dchi2_gal=7.6 dchi2_bd=0.0

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	7.1330	bhstar:bhs_bb4200_b8
`z_phot`	Photometric (P(z) peak)	—	not fitted
`z_bhs`	BH* channel fit	7.133	bhs_bb4200_b8
`z_agn`	Colour-lane fit	—	—

Spectral checks

V-shape (spectrum): no labelled spectrum
Star (spectrum): no spectrum
V-shape (photometry): not measurable β_UV not measured, β_opt not measured at z_agn
Line in F410M: Hb, OIII 0 line-free optical band(s)
Line-ambiguous: yes
Settling verdict: no extraction

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	0.93	8.19	31.48	0.1	1.38
F150W	NIRCam wide	1.501	−7.75	6.36	—	−1.2	1.19
F200W	NIRCam wide	1.989	2.32	5.46	30.49	0.4	1.32
F277W	NIRCam wide	2.762	−1.58	3.41	—	−0.5	1.36
F356W	NIRCam wide	3.568	23.24	3.02	27.98	7.7	1.34
F444W	NIRCam wide	4.404	48.54	3.62	27.18	13.4	1.45

Provenance

Field: PANORAMIC J153500+2325 (panoramicj153500p2325)
Programmes: 02514 behind every mosaic the field measured
Pipeline rows merged: 1 all at one position
Detection pass: original
Release build: 33af9933d1cc 2026-10-17T14:29:44Z

Image sources

Band	Mosaic	Native pixel	Coverage
F115W	`panoramic-j153500p2325-grizli-v7.2-f115w-clear_drc_sci.fits`	0.020″	1.00
F150W	`panoramic-j153500p2325-grizli-v7.2-f150w-clear_drc_sci.fits`	0.020″	1.00
F200W	`panoramic-j153500p2325-grizli-v7.2-f200w-clear_drc_sci.fits`	0.020″	1.00
F277W	`panoramic-j153500p2325-grizli-v7.2-f277w-clear_drc_sci.fits`	0.040″	1.00
F356W	`panoramic-j153500p2325-grizli-v7.2-f356w-clear_drc_sci.fits`	0.040″	1.00
F444W	`panoramic-j153500p2325-grizli-v7.2-f444w-clear_drc_sci.fits`	0.040″	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 J153459.49+232625.1.

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.