LEDA 706044
Observation
| Spectrum ID | 234719175_sp1 |
|---|---|
| Alt name | g2017256-312149 |
| z | 0.0669 |
| RA, Dec | 304.3565, -31.3638 |
| MJD | 60165.52 |
| SNR/Å B/R | 7.1/13.6 |
| Obs Airmass | 1.01 |
| SMSS ID | 234719175 |
| Closest SMSS | 7.14'', 234719176 |
| SMSS Mean r6"ap | nan ± nan |
| 2MASS Kext | 12.8 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.111 |
| Power law αν | -1.95 ± 0.07 |
| log L5100,AGN | 42.39 ± 0.08 |
| log HβBr/[O III] | <-0.03 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.28 ± 0.09 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | 39.13 ± 0.30 | 204 ± 63 | 99 ± 27 | 2.82 ± 1.64 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 38.90 ± 0.44 | 203 ± 62 | 82 ± 25 | 1.66 ± 1.48 |
| He II Narrow | 38.91 ± 0.42 | 203 ± 62 | 82 ± 25 | 1.74 ± 1.38 |
| He II Broad | 39.48 ± 0.38 | 1205 ± 62 | 511 ± 25 | 6.34 ± 3.42 |
| Hβ Narrow | 39.69 ± 0.13 | 204 ± 63 | 99 ± 27 | 10.30 ± 1.81 |
| Hβ Broad | <40.27 | — | — | — |
| [O III] 5007 | 40.31 ± 0.03 | 204 ± 63 | 99 ± 27 | 42.84 ± 1.89 |
| He I Narrow | 38.97 ± 0.35 | 203 ± 62 | 82 ± 25 | 2.01 ± 0.99 |
| He I Broad | — | — | — | — |
| [O I] 6300 | 38.83 ± 0.41 | 203 ± 62 | 82 ± 25 | 1.47 ± 0.94 |
| Hα Narrow | 40.33 ± 0.02 | 203 ± 62 | 82 ± 25 | 46.53 ± 1.19 |
| Hα Broad | 40.43 ± 0.06 | 2336 ± 140 | 745 ± 25 | 57.30 ± 3.05 |
| [N II] 6585 | 40.16 ± 0.03 | 203 ± 62 | 82 ± 25 | 31.25 ± 1.10 |
| [S II] 6718 | 39.68 ± 0.07 | 203 ± 62 | 82 ± 25 | 10.42 ± 1.02 |
| [S II] 6732 | 39.65 ± 0.07 | 203 ± 62 | 82 ± 25 | 9.73 ± 1.08 |
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 | 1.52 |
|---|---|
| Hβ Broad SNR | 0.45 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.19 |
| Host frac | 0.81 |
| log L5100,Host | 43.02 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
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.