LEDA 901616
Observation
| Spectrum ID | 90948400_sp1 |
|---|---|
| Alt name | g1032141-160960 |
| z | 0.0523 |
| RA, Dec | 158.0589, -16.1666 |
| MJD | 59671.54 |
| SNR/Å B/R | 12.9/27.4 |
| Obs Airmass | 1.07 |
| SMSS ID | 90948400 |
| Closest SMSS | 12.06'', 90948398 |
| SMSS Mean r6"ap | 16.8 ± 0.1 |
| 2MASS Kext | 12.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.061 |
| Power law αν | -1.85 ± 0.11 |
| log L5100,AGN | 42.78 ± 0.06 |
| log HβBr/[O III] | -0.03 ± 0.06 |
| log ML5100/M☉ | 6.75 ± 0.12 |
| log MHα/M☉ | 6.30 ± 0.05 |
| log MHβ/M☉ | 6.54 ± 0.13 |
| log M[O III]/M☉ | 6.67 ± 0.12 |
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 | 39.21 ± 0.44 | 363 ± 65 | 196 ± 26 | 1.32 ± 0.87 |
| Hγ Broad | 40.02 ± 0.15 | 1229 ± 75 | 459 ± 28 | 7.56 ± 1.39 |
| [O III] 4364 | 39.00 ± 0.40 | 289 ± 63 | 120 ± 25 | 0.83 ± 0.63 |
| He II Narrow | 38.96 ± 0.41 | 289 ± 63 | 120 ± 25 | 0.76 ± 0.57 |
| He II Broad | 39.29 ± 0.42 | 1388 ± 64 | 589 ± 26 | 1.61 ± 1.25 |
| Hβ Narrow | 39.95 ± 0.09 | 363 ± 65 | 196 ± 26 | 7.42 ± 0.79 |
| Hβ Broad | 40.52 ± 0.06 | 1533 ± 192 | 718 ± 66 | 28.01 ± 1.76 |
| [O III] 5007 | 40.56 ± 0.02 | 363 ± 65 | 196 ± 26 | 30.43 ± 0.80 |
| He I Narrow | 38.76 ± 0.38 | 289 ± 63 | 120 ± 25 | 0.49 ± 0.32 |
| He I Broad | 40.20 ± 0.07 | 3400 ± 64 | 1444 ± 26 | 13.66 ± 1.22 |
| [O I] 6300 | 39.40 ± 0.11 | 289 ± 63 | 120 ± 25 | 2.18 ± 0.33 |
| Hα Narrow | 40.37 ± 0.02 | 289 ± 63 | 120 ± 25 | 20.37 ± 0.43 |
| Hα Broad | 41.30 ± 0.01 | 1300 ± 63 | 688 ± 25 | 172.79 ± 1.49 |
| [N II] 6585 | 40.25 ± 0.02 | 289 ± 63 | 120 ± 25 | 15.67 ± 0.48 |
| [S II] 6718 | 39.96 ± 0.03 | 289 ± 63 | 120 ± 25 | 8.03 ± 0.36 |
| [S II] 6732 | 39.90 ± 0.04 | 289 ± 63 | 120 ± 25 | 6.97 ± 0.38 |
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 | 16.70 |
|---|---|
| Hβ Broad SNR | 3.43 |
| Hγ Broad SNR | 1.71 |
| AGN frac | 0.30 |
| Host frac | 0.70 |
| log L5100,Host | 43.15 |
| Fe II/Hβ | 0.97 |
| Fe II/[O III] | 0.90 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 0 |
balmer_snr | 1 |
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.