LEDA 97508
Observation
| Spectrum ID | 14712769_sp1 |
|---|---|
| Alt name | g0257408-163046 |
| z | 0.0681 |
| RA, Dec | 44.4202, -16.5128 |
| MJD | 60182.78 |
| SNR/Å B/R | 13.6/17.4 |
| Obs Airmass | 1.03 |
| SMSS ID | 14712769 |
| Closest SMSS | 7.17'', 2026646166 |
| SMSS Mean r6"ap | 15.7 ± 0.3 |
| 2MASS Kext | 12.0 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.042 |
| Power law αν | -0.75 ± 0.04 |
| log L5100,AGN | 43.99 ± 0.01 |
| log HβBr/[O III] | -0.13 ± 0.03 |
| log ML5100/M☉ | 7.77 ± 0.05 |
| log MHα/M☉ | 7.29 ± 0.05 |
| log MHβ/M☉ | 7.70 ± 0.06 |
| log M[O III]/M☉ | 7.93 ± 0.06 |
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 | 40.57 ± 0.15 | 358 ± 63 | 239 ± 29 | 1.56 ± 0.28 |
| Hγ Broad | 41.66 ± 0.03 | 2372 ± 355 | 949 ± 153 | 18.41 ± 0.60 |
| [O III] 4364 | 40.34 ± 0.16 | 312 ± 63 | 132 ± 25 | 0.96 ± 0.19 |
| He II Narrow | 40.34 ± 0.16 | 312 ± 63 | 132 ± 25 | 1.03 ± 0.18 |
| He II Broad | 41.08 ± 0.07 | 1590 ± 314 | 675 ± 133 | 5.59 ± 0.41 |
| Hβ Narrow | 41.27 ± 0.03 | 358 ± 63 | 239 ± 29 | 8.99 ± 0.31 |
| Hβ Broad | 41.99 ± 0.03 | 2723 ± 168 | 1037 ± 147 | 46.15 ± 0.64 |
| [O III] 5007 | 42.12 ± 0.01 | 358 ± 63 | 239 ± 29 | 67.16 ± 0.40 |
| He I Narrow | 40.19 ± 0.15 | 312 ± 63 | 132 ± 25 | 0.98 ± 0.15 |
| He I Broad | 41.02 ± 0.12 | 2060 ± 691 | 875 ± 293 | 6.58 ± 0.40 |
| [O I] 6300 | 40.48 ± 0.05 | 312 ± 63 | 132 ± 25 | 2.06 ± 0.15 |
| Hα Narrow | 41.64 ± 0.01 | 312 ± 63 | 132 ± 25 | 31.06 ± 0.29 |
| Hα Broad | 42.39 ± 0.01 | 1881 ± 93 | 851 ± 107 | 181.85 ± 0.67 |
| [N II] 6585 | 41.41 ± 0.02 | 312 ± 63 | 132 ± 25 | 18.53 ± 0.24 |
| [S II] 6718 | 40.93 ± 0.02 | 312 ± 63 | 132 ± 25 | 6.30 ± 0.19 |
| [S II] 6732 | 40.85 ± 0.03 | 312 ± 63 | 132 ± 25 | 5.27 ± 0.20 |
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 | 27.83 |
|---|---|
| Hβ Broad SNR | 11.03 |
| Hγ Broad SNR | 6.42 |
| AGN frac | 0.99 |
| Host frac | 0.01 |
| log L5100,Host | 41.91 |
| Fe II/Hβ | 1.13 |
| Fe II/[O III] | 0.80 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 0 |
balmer_width | 0 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.