LEDA 101257
Observation
| Spectrum ID | 489287484_sp1 |
|---|---|
| Alt name | g2326376-610602 |
| z | 0.0404 |
| RA, Dec | 351.6566, -61.1003 |
| MJD | 60164.68 |
| SNR/Å B/R | 24.2/38.2 |
| Obs Airmass | 1.15 |
| SMSS ID | 489287484 |
| Closest SMSS | 8.05'', 2701384563 |
| SMSS Mean r6"ap | 14.9 ± 0.2 |
| 2MASS Kext | 11.0 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.015 |
| Power law αν | -0.26 ± 0.08 |
| log L5100,AGN | 43.43 ± 0.01 |
| log HβBr/[O III] | 0.20 ± 0.02 |
| log ML5100/M☉ | 8.28 ± 0.05 |
| log MHα/M☉ | 7.73 ± 0.02 |
| log MHβ/M☉ | 8.10 ± 0.06 |
| log M[O III]/M☉ | 8.14 ± 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 | — | — | — | — |
| Hγ Broad | 40.26 ± 0.18 | 1619 ± 649 | 1217 ± 159 | 2.51 ± 0.61 |
| [O III] 4364 | 39.67 ± 0.22 | 374 ± 63 | 158 ± 25 | 0.67 ± 0.19 |
| He II Narrow | 39.67 ± 0.17 | 374 ± 63 | 158 ± 25 | 0.77 ± 0.18 |
| He II Broad | 40.70 ± 0.07 | 7310 ± 66 | 3104 ± 26 | 8.27 ± 0.80 |
| Hβ Narrow | 40.25 ± 0.06 | 428 ± 63 | 301 ± 28 | 3.11 ± 0.29 |
| Hβ Broad | 41.23 ± 0.02 | 6441 ± 350 | 2528 ± 25 | 29.66 ± 0.79 |
| [O III] 5007 | 41.03 ± 0.01 | 428 ± 63 | 301 ± 28 | 19.63 ± 0.32 |
| He I Narrow | 39.38 ± 0.24 | 374 ± 63 | 158 ± 25 | 0.58 ± 0.16 |
| He I Broad | 39.46 ± 0.34 | 1179 ± 62 | 501 ± 25 | 0.70 ± 0.27 |
| [O I] 6300 | 39.44 ± 0.16 | 374 ± 63 | 158 ± 25 | 0.76 ± 0.17 |
| Hα Narrow | 40.51 ± 0.02 | 374 ± 63 | 158 ± 25 | 9.45 ± 0.23 |
| Hα Broad | 41.70 ± 0.01 | 5021 ± 73 | 1864 ± 25 | 149.03 ± 0.78 |
| [N II] 6585 | 40.55 ± 0.02 | 374 ± 63 | 158 ± 25 | 10.52 ± 0.23 |
| [S II] 6718 | 40.06 ± 0.04 | 374 ± 63 | 158 ± 25 | 3.52 ± 0.20 |
| [S II] 6732 | 39.99 ± 0.05 | 374 ± 63 | 158 ± 25 | 3.04 ± 0.21 |
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 | 9.80 |
|---|---|
| Hβ Broad SNR | 4.11 |
| Hγ Broad SNR | 1.14 |
| AGN frac | 0.55 |
| Host frac | 0.45 |
| log L5100,Host | 43.34 |
| Fe II/Hβ | 1.06 |
| Fe II/[O III] | 1.68 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
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.