LEDA 147955
Observation
| Spectrum ID | 20050703_sp1 |
|---|---|
| Alt name | g0546563-333742 |
| z | 0.0346 |
| RA, Dec | 86.7346, -33.6282 |
| MJD | 59995.5 |
| SNR/Å B/R | 10.9/25.9 |
| Obs Airmass | 1.13 |
| SMSS ID | 20050703 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.6 ± 0.1 |
| 2MASS Kext | 11.1 ± 0.1 |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_all |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.039 |
| Power law αν | -0.39 ± 0.60 |
| log L5100,AGN | 42.38 ± 0.27 |
| log HβBr/[O III] | -0.29 ± 0.05 |
| log ML5100/M☉ | 7.22 ± 0.18 |
| log MHα/M☉ | 7.10 ± 0.04 |
| log MHβ/M☉ | 7.34 ± 0.14 |
| log M[O III]/M☉ | 7.61 ± 0.13 |
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 | 39.44 ± 0.39 | 249 ± 62 | 130 ± 25 | 4.53 ± 3.36 |
| Hγ Broad | 40.22 ± 0.18 | 1202 ± 63 | 461 ± 25 | 22.44 ± 6.40 |
| [O III] 4364 | 39.80 ± 0.18 | 246 ± 62 | 103 ± 25 | 10.59 ± 2.78 |
| He II Narrow | 39.14 ± 0.45 | 246 ± 62 | 103 ± 25 | 2.59 ± 2.38 |
| He II Broad | 39.82 ± 0.31 | 1178 ± 62 | 500 ± 25 | 12.43 ± 5.29 |
| Hβ Narrow | 40.06 ± 0.10 | 249 ± 62 | 130 ± 25 | 22.65 ± 2.75 |
| Hβ Broad | 40.88 ± 0.05 | 3201 ± 480 | 1327 ± 43 | 148.54 ± 9.94 |
| [O III] 5007 | 41.18 ± 0.01 | 249 ± 62 | 130 ± 25 | 310.68 ± 3.13 |
| He I Narrow | 38.88 ± 0.46 | 246 ± 62 | 103 ± 25 | 2.06 ± 1.84 |
| He I Broad | 40.42 ± 0.09 | 4036 ± 63 | 1714 ± 25 | 70.45 ± 7.74 |
| [O I] 6300 | 39.93 ± 0.07 | 246 ± 62 | 103 ± 25 | 25.79 ± 2.25 |
| Hα Narrow | 40.61 ± 0.02 | 246 ± 62 | 103 ± 25 | 131.35 ± 2.47 |
| Hα Broad | 41.51 ± 0.01 | 2810 ± 120 | 1206 ± 25 | 1033.21 ± 9.47 |
| [N II] 6585 | 40.88 ± 0.01 | 246 ± 62 | 103 ± 25 | 243.89 ± 2.56 |
| [S II] 6718 | 40.28 ± 0.03 | 246 ± 62 | 103 ± 25 | 63.08 ± 2.62 |
| [S II] 6732 | 40.34 ± 0.03 | 246 ± 62 | 103 ± 25 | 72.69 ± 2.45 |
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 | 6.88 |
|---|---|
| Hβ Broad SNR | 2.03 |
| Hγ Broad SNR | 1.33 |
| AGN frac | 0.07 |
| Host frac | 0.93 |
| log L5100,Host | 43.51 |
| Fe II/Hβ | 0.62 |
| Fe II/[O III] | 0.31 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
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.