LEDA 860570
Observation
| Spectrum ID | 298052419_sp1 |
|---|---|
| Alt name | g2039248-190223 |
| z | 0.0909 |
| RA, Dec | 309.8532, -19.0397 |
| MJD | 60082.77 |
| SNR/Å B/R | 13.0/17.3 |
| Obs Airmass | 1.03 |
| SMSS ID | 298052419 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.0 ± 0.1 |
| 2MASS Kext | 13.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.037 |
| Power law αν | 0.43 ± 0.07 |
| log L5100,AGN | 43.38 ± 0.03 |
| log HβBr/[O III] | 0.09 ± 0.41 |
| log ML5100/M☉ | 7.36 ± 0.02 |
| log MHα/M☉ | 7.24 ± 0.02 |
| log MHβ/M☉ | 7.20 ± 0.20 |
| log M[O III]/M☉ | 7.30 ± 0.03 |
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 | 40.92 ± 0.07 | 2433 ± 264 | 881 ± 25 | 12.02 ± 1.06 |
| [O III] 4364 | 39.94 ± 0.17 | 207 ± 63 | 87 ± 25 | 1.28 ± 0.34 |
| He II Narrow | 39.36 ± 0.41 | 207 ± 63 | 87 ± 25 | 0.40 ± 0.30 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.94 ± 0.19 | 213 ± 63 | 107 ± 26 | 1.66 ± 0.44 |
| Hβ Broad | 41.22 +0.78−0.03 | 2299 ± 26 | 845 ± 25 | 31.38 ± 1.27 |
| [O III] 5007 | 41.13 ± 0.02 | 213 ± 63 | 107 ± 26 | 27.59 ± 0.59 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.68 ± 0.11 | 5728 ± 63 | 2432 ± 25 | 14.39 ± 2.06 |
| [O I] 6300 | 39.41 ± 0.33 | 207 ± 63 | 87 ± 25 | 0.93 ± 0.53 |
| Hα Narrow | 40.47 ± 0.04 | 207 ± 63 | 87 ± 25 | 11.67 ± 0.54 |
| Hα Broad | 41.94 ± 0.01 | 2431 ± 65 | 1124 ± 34 | 345.23 ± 3.62 |
| [N II] 6585 | 39.97 ± 0.11 | 207 ± 63 | 87 ± 25 | 3.71 ± 0.56 |
| [S II] 6718 | 39.74 ± 0.22 | 207 ± 63 | 87 ± 25 | 2.32 ± 0.62 |
| [S II] 6732 | 39.36 ± 0.41 | 207 ± 63 | 87 ± 25 | 0.97 ± 0.75 |
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 | 12.46 |
|---|---|
| Hβ Broad SNR | 3.90 |
| Hγ Broad SNR | 2.25 |
| AGN frac | 0.44 |
| Host frac | 0.56 |
| log L5100,Host | 43.49 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 2 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 0 |
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.