LEDA 3082971
Observation
| Spectrum ID | 487504676_sp1 |
|---|---|
| Alt name | g2037599-502334 |
| z | 0.0627 |
| RA, Dec | 309.4995, -50.3926 |
| MJD | 59026.65 |
| SNR/Å B/R | 24.0/46.8 |
| Obs Airmass | 1.07 |
| SMSS ID | 487504676 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.2 ± 0.0 |
| 2MASS Kext | 12.2 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.0 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | 0.43 ± 0.06 |
| log L5100,AGN | 43.08 ± 0.03 |
| log HβBr/[O III] | 0.73 ± 0.03 |
| log ML5100/M☉ | 8.02 ± 0.03 |
| log MHα/M☉ | 7.85 ± 0.01 |
| log MHβ/M☉ | 8.08 ± 0.03 |
| log M[O III]/M☉ | 7.87 ± 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 | 40.95 ± 0.05 | 4726 ± 210 | 1795 ± 41 | 25.41 ± 1.35 |
| [O III] 4364 | 39.42 ± 0.31 | 396 ± 63 | 167 ± 25 | 0.77 ± 0.37 |
| He II Narrow | 39.58 ± 0.22 | 396 ± 63 | 167 ± 25 | 1.32 ± 0.40 |
| He II Broad | 39.38 ± 0.46 | 1438 ± 88 | 610 ± 36 | 0.84 ± 0.73 |
| Hβ Narrow | 40.25 ± 0.07 | 438 ± 64 | 411 ± 38 | 6.73 ± 0.79 |
| Hβ Broad | 41.42 ± 0.01 | 5700 ± 104 | 1879 ± 26 | 100.05 ± 1.55 |
| [O III] 5007 | 40.69 ± 0.03 | 438 ± 64 | 411 ± 38 | 19.96 ± 0.86 |
| He I Narrow | 39.22 ± 0.28 | 396 ± 63 | 167 ± 25 | 1.01 ± 0.41 |
| He I Broad | 40.75 ± 0.04 | 5439 ± 109 | 2310 ± 45 | 33.79 ± 1.91 |
| [O I] 6300 | 39.41 ± 0.18 | 396 ± 63 | 167 ± 25 | 1.85 ± 0.48 |
| Hα Narrow | 40.72 ± 0.02 | 396 ± 63 | 167 ± 25 | 41.40 ± 0.67 |
| Hα Broad | 41.97 ± 0.01 | 4792 ± 74 | 1821 ± 25 | 731.51 ± 2.29 |
| [N II] 6585 | 40.61 ± 0.02 | 396 ± 63 | 167 ± 25 | 32.50 ± 0.64 |
| [S II] 6718 | 40.14 ± 0.04 | 396 ± 63 | 167 ± 25 | 11.43 ± 0.59 |
| [S II] 6732 | 40.00 ± 0.05 | 396 ± 63 | 167 ± 25 | 8.37 ± 0.59 |
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 | 19.04 |
|---|---|
| Hβ Broad SNR | 6.22 |
| Hγ Broad SNR | 2.75 |
| AGN frac | 0.23 |
| Host frac | 0.77 |
| log L5100,Host | 43.60 |
| Fe II/Hβ | 0.42 |
| Fe II/[O III] | 2.26 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
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.