LEDA 162303
Observation
| Spectrum ID | 296217652_sp1 |
|---|---|
| Alt name | g2021078-194827 |
| z | 0.0309 |
| RA, Dec | 305.2826, -19.8074 |
| MJD | 60524.56 |
| SNR/Å B/R | 18.5/37.5 |
| Obs Airmass | 1.02 |
| SMSS ID | 296217652 |
| Closest SMSS | 6.27'', 2411027559 |
| SMSS Mean r6"ap | 16.1 ± 0.0 |
| 2MASS Kext | 11.8 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.066 |
| Power law αν | -1.97 ± 0.03 |
| log L5100,AGN | 41.92 ± 0.07 |
| log HβBr/[O III] | <0.20 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.75 ± 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 | 38.80 ± 0.29 | 207 ± 62 | 88 ± 25 | 3.91 ± 1.88 |
| He II Narrow | 39.01 ± 0.21 | 207 ± 62 | 88 ± 25 | 6.25 ± 1.58 |
| He II Broad | 39.23 ± 0.30 | 1364 ± 62 | 579 ± 25 | 10.43 ± 4.07 |
| Hβ Narrow | 38.99 ± 0.20 | 221 ± 63 | 116 ± 27 | 6.03 ± 1.62 |
| Hβ Broad | <39.91 | — | — | — |
| [O III] 5007 | 39.71 ± 0.04 | 221 ± 63 | 116 ± 27 | 31.87 ± 1.66 |
| He I Narrow | 38.51 ± 0.35 | 207 ± 62 | 88 ± 25 | 1.99 ± 0.93 |
| He I Broad | 38.60 ± 0.51 | 1388 ± 62 | 589 ± 25 | 2.44 ± 2.38 |
| [O I] 6300 | 38.58 ± 0.27 | 207 ± 62 | 88 ± 25 | 2.34 ± 0.97 |
| Hα Narrow | 39.37 ± 0.06 | 207 ± 62 | 88 ± 25 | 14.48 ± 1.03 |
| Hα Broad | 40.47 ± 0.02 | 3869 ± 167 | 1473 ± 25 | 184.27 ± 4.64 |
| [N II] 6585 | 39.50 ± 0.04 | 207 ± 62 | 88 ± 25 | 19.79 ± 1.00 |
| [S II] 6718 | 38.61 ± 0.33 | 207 ± 62 | 88 ± 25 | 2.52 ± 1.05 |
| [S II] 6732 | 38.88 ± 0.17 | 207 ± 62 | 88 ± 25 | 4.70 ± 0.97 |
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 | 2.29 |
|---|---|
| Hβ Broad SNR | 0.74 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.07 |
| Host frac | 0.93 |
| log L5100,Host | 43.07 |
| Fe II/Hβ | — |
| Fe II/[O III] | 2.03 |
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.