LEDA 90341
Observation
| Spectrum ID | 299047923_sp1 |
|---|---|
| Alt name | g1949093-103425 |
| z | 0.0239 |
| RA, Dec | 297.2886, -10.5737 |
| MJD | 60410.79 |
| SNR/Å B/R | 29.7/38.4 |
| Obs Airmass | 1.17 |
| SMSS ID | 299047923 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 14.2 ± 0.0 |
| 2MASS Kext | 9.9 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.205 |
| Power law αν | -1.02 ± 0.03 |
| log L5100,AGN | 43.50 ± 0.01 |
| log HβBr/[O III] | 0.31 ± 0.03 |
| log ML5100/M☉ | 7.64 ± 0.04 |
| log MHα/M☉ | 6.87 ± 0.04 |
| log MHβ/M☉ | 7.44 ± 0.05 |
| log M[O III]/M☉ | 7.43 ± 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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.10 ± 0.42 | 328 ± 63 | 139 ± 25 | 0.18 ± 0.15 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.11 ± 0.14 | 437 ± 66 | 408 ± 28 | 1.99 ± 0.28 |
| Hβ Broad | 41.23 ± 0.02 | 3005 ± 121 | 1293 ± 74 | 26.33 ± 0.63 |
| [O III] 5007 | 40.93 ± 0.02 | 437 ± 66 | 408 ± 28 | 13.46 ± 0.29 |
| He I Narrow | 39.56 ± 0.16 | 328 ± 63 | 139 ± 25 | 0.68 ± 0.14 |
| He I Broad | 40.88 ± 0.03 | 3805 ± 68 | 1616 ± 27 | 14.02 ± 0.52 |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 40.21 ± 0.07 | 328 ± 63 | 139 ± 25 | 3.41 ± 0.21 |
| Hα Broad | 41.93 ± 0.01 | 1605 ± 65 | 793 ± 25 | 175.54 ± 0.53 |
| [N II] 6585 | 40.56 ± 0.03 | 328 ± 63 | 139 ± 25 | 7.53 ± 0.20 |
| [S II] 6718 | 39.90 ± 0.08 | 328 ± 63 | 139 ± 25 | 1.70 ± 0.19 |
| [S II] 6732 | 39.47 ± 0.19 | 328 ± 63 | 139 ± 25 | 0.64 ± 0.17 |
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 | 41.75 |
|---|---|
| Hβ Broad SNR | 6.47 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.53 |
| Host frac | 0.47 |
| log L5100,Host | 43.45 |
| Fe II/Hβ | 2.70 |
| Fe II/[O III] | 5.44 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 2 |
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.