LEDA 397822
Observation
| Spectrum ID | 499868516_sp1 |
|---|---|
| Alt name | g0315213-564250 |
| z | 0.0730 |
| RA, Dec | 48.8388, -56.7140 |
| MJD | 60164.78 |
| SNR/Å B/R | 10.0/17.1 |
| Obs Airmass | 1.15 |
| SMSS ID | 499868516 |
| Closest SMSS | 9.95'', 499868524 |
| SMSS Mean r6"ap | 16.5 ± 0.1 |
| 2MASS Kext | 13.2 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.017 |
| Power law αν | -1.34 ± 0.27 |
| log L5100,AGN | 43.24 ± 0.03 |
| log HβBr/[O III] | -0.05 ± 0.17 |
| log ML5100/M☉ | 7.12 ± 0.03 |
| log MHα/M☉ | 6.93 ± 0.04 |
| log MHβ/M☉ | 7.10 ± 0.09 |
| log M[O III]/M☉ | 7.27 ± 0.02 |
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 | 39.89 ± 0.23 | 316 ± 63 | 150 ± 25 | 2.05 ± 1.09 |
| Hγ Broad | 40.93 ± 0.05 | 1614 ± 106 | 590 ± 34 | 22.53 ± 1.68 |
| [O III] 4364 | 39.80 ± 0.19 | 299 ± 63 | 126 ± 25 | 1.68 ± 0.46 |
| He II Narrow | 40.13 ± 0.07 | 299 ± 63 | 126 ± 25 | 3.73 ± 0.40 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.47 ± 0.05 | 316 ± 63 | 150 ± 25 | 8.40 ± 0.53 |
| Hβ Broad | 41.39 +0.32−0.02 | 1870 ± 43 | 674 ± 25 | 70.53 ± 1.18 |
| [O III] 5007 | 41.45 ± 0.01 | 316 ± 63 | 150 ± 25 | 80.93 ± 0.57 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.58 ± 0.06 | 2273 ± 80 | 965 ± 33 | 12.06 ± 1.06 |
| [O I] 6300 | 39.84 ± 0.09 | 299 ± 63 | 126 ± 25 | 2.35 ± 0.30 |
| Hα Narrow | 40.93 ± 0.02 | 299 ± 63 | 126 ± 25 | 29.86 ± 0.48 |
| Hα Broad | 41.99 ± 0.01 | 1638 ± 66 | 732 ± 25 | 337.31 ± 1.14 |
| [N II] 6585 | 40.49 ± 0.03 | 299 ± 63 | 126 ± 25 | 10.79 ± 0.44 |
| [S II] 6718 | 40.24 ± 0.04 | 299 ± 63 | 126 ± 25 | 6.18 ± 0.35 |
| [S II] 6732 | 40.23 ± 0.04 | 299 ± 63 | 126 ± 25 | 5.95 ± 0.34 |
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 | 31.22 |
|---|---|
| Hβ Broad SNR | 10.53 |
| Hγ Broad SNR | 4.79 |
| AGN frac | 0.56 |
| Host frac | 0.44 |
| log L5100,Host | 43.13 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
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.