LEDA 874316
Observation
| Spectrum ID | 167254755_sp1 |
|---|---|
| Alt name | g1548163-175935 |
| z | 0.0893 |
| RA, Dec | 237.0680, -17.9932 |
| MJD | 60166.42 |
| SNR/Å B/R | 11.4/19.1 |
| Obs Airmass | 1.08 |
| SMSS ID | 167254755 |
| Closest SMSS | 8.80'', 167254754 |
| SMSS Mean r6"ap | 17.1 ± 0.1 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.108 |
| Power law αν | -0.32 ± 0.19 |
| log L5100,AGN | 43.29 ± 0.03 |
| log HβBr/[O III] | 0.12 ± 0.42 |
| log ML5100/M☉ | 7.91 ± 0.02 |
| log MHα/M☉ | 7.61 ± 0.02 |
| log MHβ/M☉ | 7.69 ± 0.20 |
| log M[O III]/M☉ | 7.77 ± 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 | — | — | — | — |
| Hγ Broad | 41.03 ± 0.10 | 2464 ± 1792 | 2955 ± 123 | 21.27 ± 2.26 |
| [O III] 4364 | 39.36 ± 0.42 | 296 ± 63 | 125 ± 25 | 0.46 ± 0.38 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.05 ± 0.17 | 311 ± 63 | 225 ± 42 | 2.67 ± 0.78 |
| Hβ Broad | 41.01 +0.76−0.08 | 4494 ± 26 | 1674 ± 25 | 24.73 ± 1.79 |
| [O III] 5007 | 40.89 ± 0.03 | 311 ± 63 | 225 ± 42 | 19.64 ± 0.89 |
| He I Narrow | 39.57 ± 0.22 | 296 ± 63 | 125 ± 25 | 1.22 ± 0.36 |
| He I Broad | 40.84 ± 0.06 | 4811 ± 63 | 2043 ± 25 | 22.84 ± 1.74 |
| [O I] 6300 | 39.45 ± 0.33 | 296 ± 63 | 125 ± 25 | 1.05 ± 0.49 |
| Hα Narrow | 40.66 ± 0.03 | 296 ± 63 | 125 ± 25 | 18.10 ± 0.54 |
| Hα Broad | 41.96 ± 0.01 | 3662 ± 70 | 1650 ± 39 | 362.87 ± 2.88 |
| [N II] 6585 | 40.51 ± 0.03 | 296 ± 63 | 125 ± 25 | 12.93 ± 0.54 |
| [S II] 6718 | 39.72 ± 0.21 | 296 ± 63 | 125 ± 25 | 2.16 ± 0.59 |
| [S II] 6732 | 39.88 ± 0.12 | 296 ± 63 | 125 ± 25 | 3.12 ± 0.59 |
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 | 11.60 |
|---|---|
| Hβ Broad SNR | 1.63 |
| Hγ Broad SNR | 1.63 |
| AGN frac | 0.48 |
| Host frac | 0.52 |
| log L5100,Host | 43.33 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
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.