LEDA 911254
Observation
| Spectrum ID | 166647551_sp2 |
|---|---|
| Alt name | g1511595-152614 |
| z | 0.0885 |
| RA, Dec | 227.9982, -15.4371 |
| MJD | 59994.77 |
| SNR/Å B/R | 8.2/11.5 |
| Obs Airmass | 1.06 |
| SMSS ID | 166647551 |
| Closest SMSS | 13.53'', 166647553 |
| SMSS Mean r6"ap | 17.0 ± 0.1 |
| 2MASS Kext | 13.3 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.093 |
| Power law αν | -1.36 ± 0.43 |
| log L5100,AGN | 42.70 ± 0.17 |
| log HβBr/[O III] | -0.17 ± 0.03 |
| log ML5100/M☉ | 7.39 ± 0.09 |
| log MHα/M☉ | 7.79 ± 0.02 |
| log MHβ/M☉ | 7.68 ± 0.06 |
| log M[O III]/M☉ | 7.92 ± 0.05 |
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 | 39.98 ± 0.28 | 315 ± 63 | 134 ± 25 | 8.83 ± 3.86 |
| Hγ Broad | 41.42 ± 0.06 | 5195 ± 425 | 2055 ± 42 | 242.88 ± 15.21 |
| [O III] 4364 | 39.90 ± 0.34 | 317 ± 63 | 133 ± 25 | 7.38 ± 3.49 |
| He II Narrow | 40.17 ± 0.16 | 317 ± 63 | 133 ± 25 | 14.46 ± 3.20 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.68 ± 0.06 | 315 ± 63 | 134 ± 25 | 47.73 ± 3.71 |
| Hβ Broad | 41.58 ± 0.03 | 3316 ± 194 | 1280 ± 29 | 377.64 ± 11.19 |
| [O III] 5007 | 41.75 ± 0.01 | 315 ± 63 | 134 ± 25 | 575.58 ± 4.63 |
| He I Narrow | 39.56 ± 0.39 | 317 ± 63 | 133 ± 25 | 4.12 ± 2.62 |
| He I Broad | 40.74 ± 0.11 | 2720 ± 66 | 1155 ± 27 | 61.45 ± 8.43 |
| [O I] 6300 | 40.30 ± 0.09 | 317 ± 63 | 133 ± 25 | 23.65 ± 3.41 |
| Hα Narrow | 41.36 ± 0.01 | 317 ± 63 | 133 ± 25 | 280.42 ± 3.69 |
| Hα Broad | 42.28 ± 0.01 | 3627 ± 81 | 1412 ± 25 | 2296.52 ± 13.72 |
| [N II] 6585 | 41.25 ± 0.01 | 317 ± 63 | 133 ± 25 | 214.17 ± 3.91 |
| [S II] 6718 | 40.90 ± 0.03 | 317 ± 63 | 133 ± 25 | 98.36 ± 4.11 |
| [S II] 6732 | 40.66 ± 0.05 | 317 ± 63 | 133 ± 25 | 57.00 ± 4.15 |
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 | 14.21 |
|---|---|
| Hβ Broad SNR | 4.27 |
| Hγ Broad SNR | 2.15 |
| AGN frac | 0.09 |
| Host frac | 0.91 |
| log L5100,Host | 43.70 |
| Fe II/Hβ | 0.90 |
| Fe II/[O III] | 0.60 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 0 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.