LRD Watch DR1 · candidate
LRDW J114935.85+222152.2
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.
Spectral energy distribution
- NIRCam wide
- NIRCam medium
- 2σ upper limit (S/N < 2)
At a glance
- Tier
- SILVER main class
- Found by
- colour lane
- Redshift
- 7.08 colour-lane fit
- Spectral shape
- no labelled spectrum
- F444W
- 27.60 AB S/N 16, 0.16″ aperture
- F277W − F444W
- 1.38 mag strict redness
- BH* share
- not in the BH* channel
- Compactness
- FWHM 0.184″
- Balmer break
- 1.87 ± 0.76 F356W/F200W, red:Hb+OIII+blue:far-uv
- Image vetting
- half-stack pass; no flags raised
- Literature
- no 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 | 7.0800 | z_agn |
z_phot | Photometric (P(z) peak) | — | not fitted |
z_bhs | BH* channel fit | — | — |
z_agn | Colour-lane fit | 7.08 | AGN-inclusive templates |
Spectral checks
- V-shape (spectrum)
- no labelled spectrum
- Star (spectrum)
- no spectrum
- V-shape (photometry)
- passes βUV −2.70, βopt 0.58 at z_agn
- Line in F410M
- Hb, OIII 0 line-free optical band(s)
- Line-ambiguous
- yes
- Settling verdict
- inconclusive
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 | 4.54 | 5.03 | 29.76 | 0.9 | 1.48–1.52 |
| F115W | NIRCam wide | 1.154 | 8.14 | 5.20 | 29.12 | 1.6 | 1.46–1.49 |
| F150W | NIRCam wide | 1.501 | 14.67 | 2.71 | 28.48 | 5.4 | 1.43–1.48 |
| F200W | NIRCam wide | 1.989 | 12.05 | 4.77 | 28.70 | 2.5 | 1.46–1.49 |
| F277W | NIRCam wide | 2.762 | 9.32 | 2.05 | 28.98 | 4.5 | 1.60–1.63 |
| F356W | NIRCam wide | 3.568 | 22.41 | 1.88 | 28.02 | 11.9 | 1.66–1.69 |
| F410M | NIRCam medium | 4.082 | 70.01 | 3.16 | 26.79 | 22.1 | 1.67–1.69 |
| F444W | NIRCam wide | 4.404 | 33.20 | 2.09 | 27.60 | 15.8 | 1.70–1.74 |
Provenance
- Field
- MACS J1149.5+2223 (
macsj1149,mj11495x) - Programmes
01176, 05890, 06882behind every mosaic the field measured- Pipeline rows merged
- 4 largest separation 0.021″
- Detection pass
- original
- Release build
33af9933d1cc2026-10-17T14:29:44Z
Image sources
| Band | Mosaic | Native pixel | Coverage |
|---|---|---|---|
| F090W | jw01176-o231_t011_nircam_clear-f090w_i2d.fits | 0.031″ | 1.00 |
| F115W | jw01176-o231_t011_nircam_clear-f115w_i2d.fits | 0.031″ | 1.00 |
| F150W | jw05890-o003_t003_nircam_clear-f150w_i2d.fits | 0.031″ | 1.00 |
| F200W | jw01176-o231_t011_nircam_clear-f200w_i2d.fits | 0.031″ | 1.00 |
| F277W | jw01176-o231_t011_nircam_clear-f277w_i2d.fits | 0.063″ | 1.00 |
| F356W | jw01176-o231_t011_nircam_clear-f356w_i2d.fits | 0.063″ | 1.00 |
| F410M | jw01176-o231_t011_nircam_clear-f410m_i2d.fits | 0.063″ | 1.00 |
| F444W | jw01176-o231_t011_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 J114935.85+222152.2.
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.