LEDA 757022
Observation
| Spectrum ID | 103030136_sp1 |
|---|---|
| Alt name | g1437457-271803 |
| z | 0.0649 |
| RA, Dec | 219.4402, -27.3009 |
| MJD | 59725.49 |
| SNR/Å B/R | 9.8/19.7 |
| Obs Airmass | 1.01 |
| SMSS ID | 103030136 |
| Closest SMSS | 2.80'', 2167080245 |
| SMSS Mean r6"ap | 16.7 ± 0.0 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.090 |
| Power law αν | -0.71 ± 0.37 |
| log L5100,AGN | 43.53 ± 0.14 |
| log HβBr/[O III] | -0.11 ± 0.05 |
| log ML5100/M☉ | 6.84 ± 0.07 |
| log MHα/M☉ | 6.83 ± 0.04 |
| log MHβ/M☉ | 6.63 ± 0.04 |
| log M[O III]/M☉ | 6.83 ± 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 | 40.12 ± 0.23 | 433 ± 63 | 176 ± 25 | 1.66 ± 0.50 |
| Hγ Broad | 40.51 ± 0.19 | 1184 ± 63 | 404 ± 25 | 3.37 ± 0.85 |
| [O III] 4364 | 39.82 ± 0.39 | 357 ± 63 | 150 ± 25 | 0.81 ± 0.46 |
| He II Narrow | 39.84 ± 0.35 | 357 ± 63 | 150 ± 25 | 0.92 ± 0.45 |
| He II Broad | 40.14 ± 0.36 | 1184 ± 63 | 503 ± 25 | 1.87 ± 0.83 |
| Hβ Narrow | 40.03 ± 0.39 | 433 ± 63 | 176 ± 25 | 1.58 ± 0.47 |
| Hβ Broad | 41.24 ± 0.04 | 1179 ± 25 | 461 ± 25 | 23.92 ± 0.86 |
| [O III] 5007 | 41.35 ± 0.01 | 433 ± 63 | 176 ± 25 | 33.35 ± 0.57 |
| He I Narrow | 39.66 ± 0.35 | 357 ± 63 | 150 ± 25 | 0.81 ± 0.33 |
| He I Broad | 40.60 ± 0.09 | 1325 ± 63 | 563 ± 25 | 7.31 ± 0.69 |
| [O I] 6300 | 39.98 ± 0.13 | 357 ± 63 | 150 ± 25 | 1.86 ± 0.33 |
| Hα Narrow | 40.95 ± 0.05 | 357 ± 63 | 150 ± 25 | 18.37 ± 0.47 |
| Hα Broad | 41.99 ± 0.01 | 1470 ± 66 | 810 ± 25 | 204.49 ± 1.35 |
| [N II] 6585 | 41.15 ± 0.02 | 357 ± 63 | 150 ± 25 | 29.05 ± 0.44 |
| [S II] 6718 | 40.55 ± 0.06 | 357 ± 63 | 150 ± 25 | 7.57 ± 0.40 |
| [S II] 6732 | 40.33 ± 0.08 | 357 ± 63 | 150 ± 25 | 4.59 ± 0.42 |
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 | 16.88 |
|---|---|
| Hβ Broad SNR | 6.46 |
| Hγ Broad SNR | 1.32 |
| AGN frac | 0.53 |
| Host frac | 0.47 |
| log L5100,Host | 43.47 |
| Fe II/Hβ | 0.33 |
| Fe II/[O III] | 0.24 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
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.