LEDA 549860
Observation
| Spectrum ID | 488257534_sp1 |
|---|---|
| Alt name | g2109165-432059 |
| z | 0.0941 |
| RA, Dec | 317.3188, -43.3497 |
| MJD | 60167.52 |
| SNR/Å B/R | 9.6/14.1 |
| Obs Airmass | 1.07 |
| SMSS ID | 488257534 |
| Closest SMSS | 7.85'', 488257533 |
| SMSS Mean r6"ap | 17.6 ± 0.0 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | -1.17 ± 0.23 |
| log L5100,AGN | 43.08 ± 0.04 |
| log HβBr/[O III] | 0.55 ± 0.04 |
| log ML5100/M☉ | 7.69 ± 0.08 |
| log MHα/M☉ | 7.24 ± 0.03 |
| log MHβ/M☉ | 7.68 ± 0.08 |
| log M[O III]/M☉ | 7.56 ± 0.09 |
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 | 39.50 ± 0.34 | 243 ± 63 | 190 ± 30 | 1.17 ± 0.79 |
| Hγ Broad | 40.16 ± 0.15 | 1226 ± 68 | 403 ± 25 | 4.60 ± 1.24 |
| [O III] 4364 | 39.65 ± 0.19 | 210 ± 63 | 89 ± 25 | 1.65 ± 0.48 |
| He II Narrow | 39.17 ± 0.39 | 210 ± 63 | 89 ± 25 | 0.58 ± 0.53 |
| He II Broad | 40.78 ± 0.10 | 9165 ± 70 | 3892 ± 28 | 23.45 ± 3.17 |
| Hβ Narrow | 40.18 ± 0.08 | 243 ± 63 | 190 ± 30 | 6.11 ± 0.83 |
| Hβ Broad | 41.27 ± 0.02 | 3883 ± 337 | 1657 ± 33 | 76.26 ± 2.46 |
| [O III] 5007 | 40.73 ± 0.03 | 243 ± 63 | 190 ± 30 | 22.23 ± 0.93 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.13 ± 0.12 | 1577 ± 67 | 669 ± 27 | 6.31 ± 1.12 |
| [O I] 6300 | 39.49 ± 0.19 | 210 ± 63 | 89 ± 25 | 1.54 ± 0.44 |
| Hα Narrow | 40.42 ± 0.03 | 210 ± 63 | 89 ± 25 | 13.66 ± 0.51 |
| Hα Broad | 41.74 ± 0.01 | 2789 ± 74 | 1193 ± 25 | 283.97 ± 2.35 |
| [N II] 6585 | 40.07 ± 0.06 | 210 ± 63 | 89 ± 25 | 6.11 ± 0.48 |
| [S II] 6718 | 39.77 ± 0.10 | 210 ± 63 | 89 ± 25 | 3.11 ± 0.57 |
| [S II] 6732 | 39.66 ± 0.14 | 210 ± 63 | 89 ± 25 | 2.41 ± 0.57 |
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 | 11.65 |
|---|---|
| Hβ Broad SNR | 4.27 |
| Hγ Broad SNR | 1.19 |
| AGN frac | 0.45 |
| Host frac | 0.55 |
| log L5100,Host | 43.17 |
| Fe II/Hβ | 0.35 |
| Fe II/[O III] | 1.23 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
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.