LEDA 1062999
Observation
| Spectrum ID | 303660265_sp1 |
|---|---|
| Alt name | 4218657791715405952 |
| z | 0.0991 |
| RA, Dec | 308.5555, -4.0914 |
| MJD | 59725.78 |
| SNR/Å B/R | 1.2/1.9 |
| Obs Airmass | 1.13 |
| SMSS ID | 303660265 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.9 ± 0.2 |
| 2MASS Kext | 12.0 ± 0.1 |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_all |
| AGN reference | PGC |
| MW E(B−V) | 0.061 |
| Power law αν | 0.49 ± 0.01 |
| log L5100,AGN | 42.78 ± 0.01 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | — |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
Spatial extraction & sky subtraction region
Spaxel scale: 1 arcsec² — Flux units: erg s⁻¹ cm⁻² Å⁻¹
Apertures: object (solid), background (dashed)
Spectrum decomposition
Emission line measurements
| Line | log L (erg s⁻¹) | FWHM (km s⁻¹) | σ (km s⁻¹) | EW (Å) |
|---|---|---|---|---|
| Hγ Narrow | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 41.29 ± 0.03 | 1414 ± 62 | 600 ± 25 | 111.69 ± 8.24 |
| He II Narrow | 41.19 ± 0.05 | 1414 ± 62 | 600 ± 25 | 104.42 ± 9.04 |
| He II Broad | — | — | — | — |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 41.35 ± 0.03 | 1505 ± 62 | 635 ± 25 | 181.18 ± 12.07 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 39.94 ± 0.34 | 1414 ± 62 | 600 ± 25 | 13.84 ± 3.71 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.42 ± 0.10 | 1414 ± 62 | 600 ± 25 | 41.67 ± 4.02 |
| [S II] 6718 | 39.40 ± 0.53 | 1414 ± 62 | 600 ± 25 | 4.22 ± 3.89 |
| [S II] 6732 | — | — | — | — |
All narrow line widths are tied to narrow [O III] 5007Å. [O III] 5007Å and narrow Hβ include a second narrow component not tied to other narrow lines.
Emission summary
| Hα Broad SNR | 0.93 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 1.00 |
| Host frac | 0.00 |
| log L5100,Host | 39.89 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
balmer_width | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.