LRD Watch DR1 · catalog object
LRDW J043836.83-684748.5
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. No coverage in F090W, F410M.
Spectral energy distribution
- NIRCam wide
- 2σ upper limit (S/N < 2)
At a glance
- Tier
- TENTATIVE
- Found by
- BH* channel + colour lane
- Redshift
- 7.08 photometric
- Spectral shape
- no labelled spectrum
- F444W
- 25.22 AB S/N 60, 0.16″ aperture
- F277W − F444W
- 2.60 mag strict redness
- BH* share
- 0.82 bhs_bb4200_b4; Δχ² galaxy 18.8, dwarf 14.5
- Compactness
- growth ratio 1.691 stars 1.600
- Balmer break
- 6.61 ± 1.96 F356W/F200W, red:Hb+OIII+blue:far-uv
- Image vetting
- half-stack no-coverage; 1 flag(s)
- Literature
- 1 catalogue(s), 0 AGN paper(s) within 0.011″
Vetting
- Image vettingnot applicable
- Half-stack testno-coverage
- Artifact risknone
- Neighbourflagged
- Extendedno
- colour laneneighbor-contam bright-neighbor id 13690 m=22.1 at 0.81" (< excl 1.16")
- BH* channelneighbor-contam bright-neighbor id 13690 m=22.1 at 0.81" (< excl 1.16")
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 | 7.0850 | pz:z_map |
z_phot | Photometric (P(z) peak) | 7.085 | 68%: 6.968–8.589 |
z_bhs | BH* channel fit | 7.980 | bhs_bb4200_b4 |
z_agn | Colour-lane fit | 0.84 | 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 F410M
- Hb, OIII 0 line-free optical band(s)
- Line-ambiguous
- yes
- Settling verdict
- not evaluated
Literature
Published objects within 1″ of this position. A match is a positional recovery, not an adopted classification.
- Weibel et al. (2026), BH*-dominated sample
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 | 4.68 | 7.75 | 29.73 | 0.6 | 1.11 |
| F150W | NIRCam wide | 1.501 | 12.82 | 6.45 | 28.63 | 2.0 | 1.10 |
| F200W | NIRCam wide | 1.989 | 17.78 | 5.22 | 28.27 | 3.4 | 1.10 |
| F277W | NIRCam wide | 2.762 | 27.01 | 4.06 | 27.82 | 6.7 | 1.19 |
| F356W | NIRCam wide | 3.568 | 117.95 | 4.04 | 26.22 | 29.2 | 1.23 |
| F444W | NIRCam wide | 4.404 | 295.31 | 4.89 | 25.22 | 60.5 | 1.27 |
Provenance
- Field
- PANORAMIC J043844-6849 (
panoramicj043844m6849) - Programmes
02514behind every mosaic the field measured- Pipeline rows merged
- 3 all at one position
- Detection pass
- original
- Release build
33af9933d1cc2026-10-17T14:29:44Z
Image sources
| Band | Mosaic | Native pixel | Coverage |
|---|---|---|---|
| F115W | panoramic-j043844m6849-grizli-v7.2-f115w-clear_drc_sci.fits | 0.020″ | 1.00 |
| F150W | panoramic-j043844m6849-grizli-v7.2-f150w-clear_drc_sci.fits | 0.020″ | 1.00 |
| F200W | panoramic-j043844m6849-grizli-v7.2-f200w-clear_drc_sci.fits | 0.020″ | 1.00 |
| F277W | panoramic-j043844m6849-grizli-v7.2-f277w-clear_drc_sci.fits | 0.040″ | 1.00 |
| F356W | panoramic-j043844m6849-grizli-v7.2-f356w-clear_drc_sci.fits | 0.040″ | 1.00 |
| F444W | panoramic-j043844m6849-grizli-v7.2-f444w-clear_drc_sci.fits | 0.040″ | 0.98 |
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 J043836.83-684748.5.
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.