LEDA 156004
Observation
| Spectrum ID | 86272917_sp1 |
|---|---|
| Alt name | g1053410-291824 |
| z | 0.0579 |
| RA, Dec | 163.4208, -29.3067 |
| MJD | 59350.4 |
| SNR/Å B/R | 14.6/31.4 |
| Obs Airmass | 1.00 |
| SMSS ID | 86272917 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.6 ± 0.0 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.045 |
| Power law αν | -0.27 ± 0.33 |
| log L5100,AGN | 42.90 ± 0.07 |
| log HβBr/[O III] | -0.17 ± 0.04 |
| log ML5100/M☉ | 7.69 ± 0.21 |
| log MHα/M☉ | 7.03 ± 0.03 |
| log MHβ/M☉ | 7.63 ± 0.21 |
| log M[O III]/M☉ | 7.84 ± 0.20 |
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 | 40.04 ± 0.20 | 1599 ± 369 | 695 ± 109 | 4.67 ± 1.43 |
| [O III] 4364 | 39.48 ± 0.24 | 366 ± 63 | 155 ± 25 | 1.51 ± 0.54 |
| He II Narrow | 39.08 ± 0.41 | 366 ± 63 | 155 ± 25 | 0.67 ± 0.53 |
| He II Broad | 40.33 ± 0.13 | 4866 ± 70 | 2066 ± 29 | 12.12 ± 1.99 |
| Hβ Narrow | 40.35 ± 0.07 | 556 ± 67 | 490 ± 27 | 13.35 ± 1.07 |
| Hβ Broad | 40.97 ± 0.04 | 4273 ± 985 | 2155 ± 57 | 55.74 ± 2.54 |
| [O III] 5007 | 41.14 ± 0.01 | 556 ± 67 | 490 ± 27 | 87.22 ± 1.48 |
| He I Narrow | 39.18 ± 0.25 | 366 ± 63 | 155 ± 25 | 1.26 ± 0.44 |
| He I Broad | 40.17 ± 0.09 | 3365 ± 83 | 1429 ± 34 | 12.36 ± 1.44 |
| [O I] 6300 | 39.50 ± 0.11 | 366 ± 63 | 155 ± 25 | 2.98 ± 0.47 |
| Hα Narrow | 40.48 ± 0.02 | 366 ± 63 | 155 ± 25 | 30.06 ± 0.65 |
| Hα Broad | 41.55 ± 0.01 | 2518 ± 75 | 1417 ± 28 | 356.11 ± 2.37 |
| [N II] 6585 | 40.52 ± 0.02 | 366 ± 63 | 155 ± 25 | 33.50 ± 0.65 |
| [S II] 6718 | 40.11 ± 0.03 | 366 ± 63 | 155 ± 25 | 13.58 ± 0.58 |
| [S II] 6732 | 40.02 ± 0.03 | 366 ± 63 | 155 ± 25 | 10.96 ± 0.56 |
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 | 12.02 |
|---|---|
| Hβ Broad SNR | 2.90 |
| Hγ Broad SNR | 1.02 |
| AGN frac | 0.28 |
| Host frac | 0.72 |
| log L5100,Host | 43.30 |
| Fe II/Hβ | 0.60 |
| Fe II/[O III] | 0.40 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 1 |
hb_width | 1 |
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.