LRD Watch DR1 · candidate
LRDW J064737.19+701304.7
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
- SILVER main class
- Found by
- colour lane
- Redshift
- 6.46 colour-lane fit
- Spectral shape
- no labelled spectrum
- F444W
- 26.19 AB S/N 37, 0.16″ aperture
- F277W − F444W
- 1.47 mag strict redness
- BH* share
- not in the BH* channel
- Compactness
- FWHM 0.178″
- Balmer break
- 2.47 ± 0.28 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 | 6.4600 | z_agn |
z_phot | Photometric (P(z) peak) | 7.414 | 68%: 6.628–7.738 |
z_bhs | BH* channel fit | — | — |
z_agn | Colour-lane fit | 6.46 | AGN-inclusive templates |
Spectral checks
- V-shape (spectrum)
- no labelled spectrum
- Star (spectrum)
- no spectrum
- V-shape (photometry)
- fails βUV −2.20, βopt −1.92 at z_agn
- Line in F410M
- none 0 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.
- 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 | 40.69 | 9.26 | 27.38 | 4.4 | 1.19 |
| F150W | NIRCam wide | 1.501 | 38.64 | 7.05 | 27.43 | 5.5 | 1.18 |
| F200W | NIRCam wide | 1.989 | 48.13 | 5.25 | 27.19 | 9.2 | 1.26 |
| F277W | NIRCam wide | 2.762 | 31.39 | 3.85 | 27.66 | 8.2 | 1.29 |
| F356W | NIRCam wide | 3.568 | 119.16 | 3.06 | 26.21 | 39.0 | 1.38 |
| F444W | NIRCam wide | 4.404 | 121.36 | 3.29 | 26.19 | 36.9 | 1.41 |
Provenance
- Field
- MACS J0647.8+7015 (
macs0647) - Programmes
01433, 04246behind every mosaic the field measured- Pipeline rows merged
- 2 all at one position
- Detection pass
- original
- Release build
33af9933d1cc2026-10-17T14:29:44Z
Image sources
| Band | Mosaic | Native pixel | Coverage |
|---|---|---|---|
| F115W | jw01433-o010_t001_nircam_clear-f115w_i2d.fits | 0.031″ | 1.00 |
| F150W | jw01433-o010_t001_nircam_clear-f150w_i2d.fits | 0.031″ | 1.00 |
| F200W | jw01433-o010_t001_nircam_clear-f200w_i2d.fits | 0.031″ | 1.00 |
| F277W | jw01433-o010_t001_nircam_clear-f277w_i2d.fits | 0.063″ | 0.99 |
| F356W | jw01433-o010_t001_nircam_clear-f356w_i2d.fits | 0.063″ | 1.00 |
| F444W | jw01433-o010_t001_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 J064737.19+701304.7.
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.