LEDA 988847
Observation
| Spectrum ID | 24621550_sp1 |
|---|---|
| Alt name | g0439209-093621 |
| z | 0.0577 |
| RA, Dec | 69.8370, -9.6059 |
| MJD | 60581.73 |
| SNR/Å B/R | 7.0/16.7 |
| Obs Airmass | 1.09 |
| SMSS ID | 24621550 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.9 ± 0.0 |
| 2MASS Kext | 13.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.073 |
| Power law αν | 0.45 ± 0.05 |
| log L5100,AGN | 42.41 ± 0.03 |
| log HβBr/[O III] | <-0.08 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.50 ± 0.07 |
| 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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 39.23 ± 0.37 | 407 ± 62 | 173 ± 25 | 2.69 ± 1.74 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.27 ± 0.44 | 424 ± 64 | 295 ± 76 | 3.24 ± 3.17 |
| Hβ Broad | <40.33 | — | — | — |
| [O III] 5007 | 40.41 ± 0.05 | 424 ± 64 | 296 ± 76 | 48.10 ± 3.56 |
| He I Narrow | 39.00 ± 0.37 | 407 ± 62 | 173 ± 25 | 2.76 ± 1.40 |
| He I Broad | 39.91 ± 0.14 | 2605 ± 62 | 1106 ± 25 | 22.52 ± 3.92 |
| [O I] 6300 | 38.96 ± 0.37 | 407 ± 62 | 173 ± 25 | 3.01 ± 1.58 |
| Hα Narrow | 39.89 ± 0.07 | 407 ± 62 | 173 ± 25 | 28.11 ± 2.17 |
| Hα Broad | 40.72 ± 0.04 | 2441 ± 136 | 972 ± 63 | 192.12 ± 5.90 |
| [N II] 6585 | 40.19 ± 0.03 | 407 ± 62 | 173 ± 25 | 57.03 ± 2.20 |
| [S II] 6718 | 39.78 ± 0.06 | 407 ± 62 | 173 ± 25 | 23.23 ± 1.99 |
| [S II] 6732 | 39.82 ± 0.06 | 407 ± 62 | 173 ± 25 | 25.71 ± 1.97 |
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 | 2.20 |
|---|---|
| Hβ Broad SNR | 0.76 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.21 |
| Host frac | 0.79 |
| log L5100,Host | 42.99 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
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.