LEDA 3098145
Observation
| Spectrum ID | 307031075_sp1 |
|---|---|
| Alt name | g1514487-402153 |
| z | 0.0238 |
| RA, Dec | 228.7029, -40.3648 |
| MJD | 59078.36 |
| SNR/Å B/R | 21.1/45.2 |
| Obs Airmass | 1.04 |
| SMSS ID | 307031075 |
| Closest SMSS | 13.77'', 307031145 |
| SMSS Mean r6"ap | 14.9 ± 0.0 |
| 2MASS Kext | 10.8 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.094 |
| Power law αν | 0.19 ± 0.24 |
| log L5100,AGN | 42.31 ± 0.04 |
| log HβBr/[O III] | 0.67 ± 0.02 |
| log ML5100/M☉ | 7.36 ± 0.05 |
| log MHα/M☉ | 7.28 ± 0.03 |
| log MHβ/M☉ | 7.61 ± 0.05 |
| log M[O III]/M☉ | 7.42 ± 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 | 38.78 ± 0.46 | 405 ± 65 | 157 ± 25 | 1.06 ± 1.00 |
| Hγ Broad | 39.95 ± 0.14 | 2018 ± 648 | 917 ± 74 | 15.04 ± 3.04 |
| [O III] 4364 | 39.14 ± 0.25 | 256 ± 63 | 108 ± 25 | 2.50 ± 0.91 |
| He II Narrow | 38.97 ± 0.28 | 256 ± 63 | 108 ± 25 | 1.96 ± 0.85 |
| He II Broad | 40.34 ± 0.09 | 9091 ± 72 | 3861 ± 29 | 45.45 ± 5.12 |
| Hβ Narrow | 39.11 ± 0.27 | 405 ± 65 | 157 ± 25 | 2.90 ± 0.96 |
| Hβ Broad | 41.10 ± 0.02 | 3897 ± 125 | 3958 ± 94 | 289.55 ± 7.51 |
| [O III] 5007 | 40.43 ± 0.01 | 405 ± 65 | 157 ± 25 | 65.66 ± 1.06 |
| He I Narrow | 38.33 ± 0.42 | 256 ± 63 | 108 ± 25 | 0.74 ± 0.69 |
| He I Broad | 40.29 ± 0.04 | 4979 ± 69 | 2114 ± 28 | 66.80 ± 3.71 |
| [O I] 6300 | 38.58 ± 0.33 | 256 ± 63 | 108 ± 25 | 1.52 ± 0.82 |
| Hα Narrow | 39.76 ± 0.03 | 256 ± 63 | 108 ± 25 | 25.19 ± 1.01 |
| Hα Broad | 41.44 ± 0.01 | 3606 ± 65 | 1495 ± 30 | 1201.76 ± 5.43 |
| [N II] 6585 | 39.96 ± 0.02 | 256 ± 63 | 108 ± 25 | 40.68 ± 1.03 |
| [S II] 6718 | 39.34 ± 0.08 | 256 ± 63 | 108 ± 25 | 10.17 ± 1.19 |
| [S II] 6732 | 39.26 ± 0.09 | 256 ± 63 | 108 ± 25 | 8.37 ± 1.10 |
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 | 14.96 |
|---|---|
| Hβ Broad SNR | 5.46 |
| Hγ Broad SNR | 1.37 |
| AGN frac | 0.10 |
| Host frac | 0.90 |
| log L5100,Host | 43.27 |
| Fe II/Hβ | 0.59 |
| Fe II/[O III] | 2.76 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 2 |
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.