LEDA 147925
Observation
| Spectrum ID | 19910748_sp1 |
|---|---|
| Alt name | g0546258-354848 |
| z | 0.0346 |
| RA, Dec | 86.6077, -35.8134 |
| MJD | 60611.7 |
| SNR/Å B/R | 25.8/45.2 |
| Obs Airmass | 1.01 |
| SMSS ID | 19910748 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.9 ± 0.0 |
| 2MASS Kext | 11.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.034 |
| Power law αν | 0.41 ± 0.09 |
| log L5100,AGN | 42.56 ± 0.03 |
| log HβBr/[O III] | -0.04 ± 0.35 |
| log ML5100/M☉ | 7.06 ± 0.04 |
| log MHα/M☉ | 7.08 ± 0.03 |
| log MHβ/M☉ | 6.86 ± 0.18 |
| log M[O III]/M☉ | 6.99 ± 0.05 |
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 | 39.49 ± 0.16 | 307 ± 63 | 219 ± 33 | 2.91 ± 0.90 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.49 ± 0.13 | 284 ± 63 | 120 ± 25 | 2.95 ± 0.55 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.97 ± 0.05 | 307 ± 63 | 219 ± 33 | 11.63 ± 0.93 |
| Hβ Broad | 40.35 +0.65−0.05 | 2439 ± 39 | 772 ± 25 | 27.37 ± 1.67 |
| [O III] 5007 | 40.39 ± 0.02 | 307 ± 63 | 219 ± 33 | 33.15 ± 1.06 |
| He I Narrow | 38.99 ± 0.23 | 284 ± 63 | 120 ± 25 | 1.93 ± 0.56 |
| He I Broad | 39.39 ± 0.26 | 2252 ± 67 | 956 ± 27 | 4.85 ± 1.61 |
| [O I] 6300 | 39.05 ± 0.17 | 284 ± 63 | 120 ± 25 | 2.60 ± 0.67 |
| Hα Narrow | 40.44 ± 0.01 | 284 ± 63 | 120 ± 25 | 70.76 ± 0.92 |
| Hα Broad | 41.43 ± 0.01 | 2908 ± 73 | 1557 ± 25 | 688.86 ± 3.84 |
| [N II] 6585 | 40.18 ± 0.02 | 284 ± 63 | 120 ± 25 | 39.72 ± 0.85 |
| [S II] 6718 | 39.74 ± 0.04 | 284 ± 63 | 120 ± 25 | 14.90 ± 0.86 |
| [S II] 6732 | 39.69 ± 0.04 | 284 ± 63 | 120 ± 25 | 13.42 ± 0.82 |
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 | 14.07 |
|---|---|
| Hβ Broad SNR | 2.31 |
| Hγ Broad SNR | 0.48 |
| AGN frac | 0.14 |
| Host frac | 0.86 |
| log L5100,Host | 43.37 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
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.