LEDA 139169
Observation
| Spectrum ID | 89172892_sp1 |
|---|---|
| Alt name | g0908055-082946 |
| z | 0.0705 |
| RA, Dec | 137.0229, -8.4960 |
| MJD | 59671.51 |
| SNR/Å B/R | 9.4/20.1 |
| Obs Airmass | 1.20 |
| SMSS ID | 89172892 |
| Closest SMSS | 14.29'', 89172891 |
| SMSS Mean r6"ap | 16.7 ± 0.1 |
| 2MASS Kext | 13.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.047 |
| Power law αν | -0.74 ± 0.28 |
| log L5100,AGN | 43.04 ± 0.06 |
| log HβBr/[O III] | -0.01 ± 0.04 |
| log ML5100/M☉ | 8.17 ± 0.26 |
| log MHα/M☉ | 7.23 ± 0.05 |
| log MHβ/M☉ | 8.18 ± 0.26 |
| log M[O III]/M☉ | 8.32 ± 0.26 |
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 | 39.84 ± 0.26 | 260 ± 63 | 261 ± 35 | 2.59 ± 1.43 |
| Hγ Broad | 40.34 ± 0.17 | 1558 ± 275 | 639 ± 77 | 7.27 ± 1.85 |
| [O III] 4364 | 39.84 ± 0.20 | 256 ± 63 | 107 ± 25 | 2.61 ± 0.64 |
| He II Narrow | 39.60 ± 0.26 | 256 ± 63 | 107 ± 25 | 1.63 ± 0.62 |
| He II Broad | 40.11 ± 0.31 | 3536 ± 63 | 1502 ± 25 | 5.38 ± 2.24 |
| Hβ Narrow | 40.37 ± 0.07 | 260 ± 63 | 261 ± 35 | 10.20 ± 1.42 |
| Hβ Broad | 41.26 ± 0.04 | 6935 ± 2220 | 3549 ± 67 | 77.90 ± 4.20 |
| [O III] 5007 | 41.27 ± 0.01 | 260 ± 63 | 261 ± 35 | 83.08 ± 1.63 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.27 ± 0.45 | 1178 ± 62 | 500 ± 25 | 1.02 ± 0.97 |
| [O I] 6300 | 39.80 ± 0.09 | 256 ± 63 | 107 ± 25 | 3.77 ± 0.47 |
| Hα Narrow | 40.82 ± 0.01 | 256 ± 63 | 107 ± 25 | 42.34 ± 0.59 |
| Hα Broad | 41.66 ± 0.01 | 2911 ± 174 | 1476 ± 25 | 289.57 ± 2.45 |
| [N II] 6585 | 40.62 ± 0.02 | 256 ± 63 | 107 ± 25 | 26.82 ± 0.57 |
| [S II] 6718 | 40.25 ± 0.04 | 256 ± 63 | 107 ± 25 | 11.58 ± 0.63 |
| [S II] 6732 | 40.19 ± 0.04 | 256 ± 63 | 107 ± 25 | 10.13 ± 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 | 8.27 |
|---|---|
| Hβ Broad SNR | 2.01 |
| Hγ Broad SNR | 1.16 |
| AGN frac | 0.35 |
| Host frac | 0.65 |
| log L5100,Host | 43.31 |
| Fe II/Hβ | 0.56 |
| Fe II/[O III] | 0.55 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 1 |
hb_width | 1 |
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.