LEDA 319524
Observation
| Spectrum ID | 483877210_sp1 |
|---|---|
| Alt name | g1949236-644528 |
| z | 0.0790 |
| RA, Dec | 297.3482, -64.7578 |
| MJD | 60163.53 |
| SNR/Å B/R | 6.7/12.2 |
| Obs Airmass | 1.20 |
| SMSS ID | 483877210 |
| Closest SMSS | 10.58'', 483877211 |
| SMSS Mean r6"ap | 16.9 ± 0.1 |
| 2MASS Kext | 12.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.061 |
| Power law αν | -1.95 ± 0.04 |
| log L5100,AGN | 43.32 ± 0.02 |
| log HβBr/[O III] | -1.55 ± 0.10 |
| log ML5100/M☉ | 6.80 ± 0.04 |
| log MHα/M☉ | 7.23 ± 0.03 |
| log MHβ/M☉ | 6.43 ± 0.07 |
| log M[O III]/M☉ | 7.31 ± 0.04 |
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 | 40.74 ± 0.05 | 394 ± 62 | 205 ± 25 | 13.28 ± 0.75 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 40.44 ± 0.06 | 344 ± 63 | 146 ± 25 | 6.68 ± 0.56 |
| He II Narrow | 40.26 ± 0.12 | 344 ± 63 | 146 ± 25 | 4.40 ± 0.51 |
| He II Broad | 40.38 ± 0.17 | 1343 ± 89 | 570 ± 37 | 5.75 ± 0.96 |
| Hβ Narrow | 41.17 ± 0.02 | 394 ± 62 | 205 ± 25 | 36.43 ± 0.72 |
| Hβ Broad | 40.68 ± 0.10 | 1246 ± 48 | 456 ± 27 | 10.48 ± 0.99 |
| [O III] 5007 | 42.23 ± 0.01 | 394 ± 62 | 205 ± 25 | 415.00 ± 1.04 |
| He I Narrow | 40.15 ± 0.09 | 344 ± 63 | 146 ± 25 | 3.47 ± 0.32 |
| He I Broad | 39.83 ± 0.33 | 1190 ± 63 | 505 ± 25 | 1.64 ± 0.63 |
| [O I] 6300 | 40.82 ± 0.02 | 344 ± 63 | 146 ± 25 | 16.29 ± 0.33 |
| Hα Narrow | 41.71 ± 0.01 | 344 ± 63 | 146 ± 25 | 127.12 ± 0.52 |
| Hα Broad | 41.78 ± 0.01 | 2679 ± 85 | 991 ± 38 | 148.23 ± 1.04 |
| [N II] 6585 | 41.08 ± 0.01 | 344 ± 63 | 146 ± 25 | 29.49 ± 0.41 |
| [S II] 6718 | 41.10 ± 0.01 | 344 ± 63 | 146 ± 25 | 30.75 ± 0.50 |
| [S II] 6732 | 41.04 ± 0.01 | 344 ± 63 | 146 ± 25 | 26.82 ± 0.50 |
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 | 10.69 |
|---|---|
| Hβ Broad SNR | 2.42 |
| Hγ Broad SNR | 0.93 |
| AGN frac | 0.76 |
| Host frac | 0.24 |
| log L5100,Host | 42.82 |
| Fe II/Hβ | 2.42 |
| Fe II/[O III] | 0.06 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
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.