LEDA 2817164
Observation
| Spectrum ID | 229656645_sp1 |
|---|---|
| Alt name | IRAS 19370-3022 |
| z | 0.0529 |
| RA, Dec | 295.0629, -30.2644 |
| MJD | 60905.44 |
| SNR/Å B/R | 14.7/22.2 |
| Obs Airmass | 1.05 |
| SMSS ID | 229656645 |
| Closest SMSS | 10.62'', 229656646 |
| SMSS Mean r6"ap | nan ± nan |
| 2MASS Kext | 11.3 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | PGC |
| MW E(B−V) | 0.088 |
| Power law αν | -1.20 ± 0.02 |
| log L5100,AGN | 44.05 ± 0.01 |
| log HβBr/[O III] | 0.55 ± 0.01 |
| log ML5100/M☉ | 8.23 ± 0.02 |
| log MHα/M☉ | 8.10 ± 0.03 |
| log MHβ/M☉ | 8.28 ± 0.02 |
| log M[O III]/M☉ | 8.19 ± 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 | 40.48 ± 0.13 | 342 ± 63 | 146 ± 25 | 1.19 ± 0.25 |
| Hγ Broad | 41.96 ± 0.03 | 4675 ± 335 | 3402 ± 110 | 36.63 ± 1.27 |
| [O III] 4364 | 39.82 ± 0.39 | 342 ± 63 | 144 ± 25 | 0.27 ± 0.19 |
| He II Narrow | 40.43 ± 0.11 | 342 ± 63 | 144 ± 25 | 1.15 ± 0.18 |
| He II Broad | 41.86 ± 0.03 | 12928 ± 69 | 5490 ± 28 | 30.88 ± 1.14 |
| Hβ Narrow | 41.09 ± 0.03 | 342 ± 63 | 146 ± 25 | 5.38 ± 0.25 |
| Hβ Broad | 42.32 ± 0.01 | 4476 ± 114 | 3041 ± 55 | 91.13 ± 1.15 |
| [O III] 5007 | 41.76 ± 0.01 | 342 ± 63 | 146 ± 25 | 25.88 ± 0.27 |
| He I Narrow | 40.21 ± 0.10 | 342 ± 63 | 144 ± 25 | 0.82 ± 0.12 |
| He I Broad | 41.49 ± 0.03 | 5765 ± 95 | 2448 ± 39 | 15.58 ± 0.53 |
| [O I] 6300 | 40.57 ± 0.04 | 342 ± 63 | 144 ± 25 | 2.01 ± 0.13 |
| Hα Narrow | 41.69 ± 0.01 | 342 ± 63 | 144 ± 25 | 27.44 ± 0.25 |
| Hα Broad | 42.72 ± 0.01 | 3763 ± 66 | 1752 ± 27 | 293.96 ± 0.88 |
| [N II] 6585 | 41.45 ± 0.01 | 342 ± 63 | 144 ± 25 | 15.59 ± 0.23 |
| [S II] 6718 | 40.95 ± 0.02 | 342 ± 63 | 144 ± 25 | 5.07 ± 0.15 |
| [S II] 6732 | 40.89 ± 0.02 | 342 ± 63 | 144 ± 25 | 4.40 ± 0.15 |
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 | 29.67 |
|---|---|
| Hβ Broad SNR | 10.88 |
| Hγ Broad SNR | 4.91 |
| AGN frac | 1.00 |
| Host frac | 0.00 |
| log L5100,Host | 41.52 |
| Fe II/Hβ | 0.29 |
| Fe II/[O III] | 1.03 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 1 |
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.