2MASS J08200308-1741507
Observation
| Spectrum ID | 70014132_sp1 |
|---|---|
| Alt name | g0820031-174151 |
| z | 0.0736 |
| RA, Dec | 125.0129, -17.6975 |
| MJD | 59668.48 |
| SNR/Å B/R | 14.1/25.0 |
| Obs Airmass | 1.10 |
| SMSS ID | 70014132 |
| Closest SMSS | 7.49'', 70014131 |
| SMSS Mean r6"ap | 16.7 ± 0.0 |
| 2MASS Kext | 12.7 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.111 |
| Power law αν | -0.71 ± 0.19 |
| log L5100,AGN | 43.44 ± 0.03 |
| log HβBr/[O III] | 0.25 ± 0.04 |
| log ML5100/M☉ | 7.16 ± 0.06 |
| log MHα/M☉ | 6.95 ± 0.03 |
| log MHβ/M☉ | 7.00 ± 0.07 |
| log M[O III]/M☉ | 7.02 ± 0.07 |
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 | 40.27 ± 0.12 | 364 ± 63 | 289 ± 49 | 2.77 ± 0.62 |
| Hγ Broad | 40.71 ± 0.11 | 2432 ± 426 | 930 ± 89 | 7.25 ± 0.92 |
| [O III] 4364 | 39.62 ± 0.32 | 356 ± 63 | 150 ± 25 | 0.63 ± 0.31 |
| He II Narrow | 39.66 ± 0.28 | 356 ± 63 | 150 ± 25 | 0.75 ± 0.31 |
| He II Broad | 41.08 ± 0.08 | 13130 ± 143 | 5576 ± 60 | 19.79 ± 2.01 |
| Hβ Narrow | 40.79 ± 0.04 | 364 ± 63 | 289 ± 49 | 10.57 ± 0.64 |
| Hβ Broad | 41.29 ± 0.03 | 1762 ± 126 | 1276 ± 88 | 33.82 ± 1.40 |
| [O III] 5007 | 41.04 ± 0.02 | 364 ± 63 | 289 ± 49 | 19.80 ± 0.70 |
| He I Narrow | 39.72 ± 0.20 | 356 ± 63 | 150 ± 25 | 1.17 ± 0.29 |
| He I Broad | 40.43 ± 0.08 | 1637 ± 107 | 695 ± 45 | 5.81 ± 0.56 |
| [O I] 6300 | 39.98 ± 0.07 | 356 ± 63 | 150 ± 25 | 2.33 ± 0.26 |
| Hα Narrow | 41.40 ± 0.01 | 356 ± 63 | 150 ± 25 | 64.43 ± 0.37 |
| Hα Broad | 41.86 ± 0.01 | 1842 ± 65 | 1222 ± 52 | 187.58 ± 2.18 |
| [N II] 6585 | 41.10 ± 0.01 | 356 ± 63 | 150 ± 25 | 32.17 ± 0.35 |
| [S II] 6718 | 40.62 ± 0.02 | 356 ± 63 | 150 ± 25 | 10.92 ± 0.35 |
| [S II] 6732 | 40.49 ± 0.03 | 356 ± 63 | 150 ± 25 | 8.20 ± 0.39 |
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 | 16.57 |
|---|---|
| Hβ Broad SNR | 5.60 |
| Hγ Broad SNR | 1.69 |
| AGN frac | 0.53 |
| Host frac | 0.47 |
| log L5100,Host | 43.39 |
| Fe II/Hβ | 0.60 |
| Fe II/[O III] | 1.06 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 2 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.