2MASS J18243062-5112240
Observation
| Spectrum ID | 475504634_sp1 |
|---|---|
| Alt name | g1824306-511224 |
| z | 0.0784 |
| RA, Dec | 276.1275, -51.2067 |
| MJD | 60082.64 |
| SNR/Å B/R | 6.8/7.9 |
| Obs Airmass | 1.10 |
| SMSS ID | 475504634 |
| Closest SMSS | 14.78'', 475504633 |
| SMSS Mean r6"ap | 16.1 ± 0.1 |
| 2MASS Kext | 13.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.063 |
| Power law αν | 0.02 ± 0.22 |
| log L5100,AGN | 43.98 ± 0.03 |
| log HβBr/[O III] | -0.02 ± 0.05 |
| log ML5100/M☉ | 7.27 ± 0.12 |
| log MHα/M☉ | 7.46 ± 0.05 |
| log MHβ/M☉ | 7.19 ± 0.12 |
| log M[O III]/M☉ | 7.37 ± 0.12 |
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 | 40.63 ± 0.24 | 363 ± 66 | 151 ± 26 | 1.59 ± 0.44 |
| Hγ Broad | 41.42 ± 0.09 | 1289 ± 138 | 454 ± 52 | 8.92 ± 0.82 |
| [O III] 4364 | 40.67 ± 0.19 | 322 ± 84 | 136 ± 35 | 2.06 ± 0.39 |
| He II Narrow | 40.45 ± 0.27 | 322 ± 84 | 136 ± 35 | 1.49 ± 0.40 |
| He II Broad | 41.01 ± 0.16 | 1222 ± 72 | 519 ± 29 | 4.53 ± 0.78 |
| Hβ Narrow | 40.87 ± 0.22 | 363 ± 66 | 151 ± 26 | 3.52 ± 0.51 |
| Hβ Broad | 41.96 ± 0.04 | 1537 ± 219 | 558 ± 83 | 37.86 ± 1.00 |
| [O III] 5007 | 41.99 ± 0.02 | 363 ± 66 | 151 ± 26 | 49.79 ± 0.64 |
| He I Narrow | 40.17 ± 0.33 | 322 ± 84 | 136 ± 35 | 1.26 ± 0.44 |
| He I Broad | 41.07 ± 0.12 | 1455 ± 138 | 617 ± 58 | 8.04 ± 1.03 |
| [O I] 6300 | 40.45 ± 0.17 | 322 ± 84 | 136 ± 35 | 2.56 ± 0.46 |
| Hα Narrow | 41.58 ± 0.09 | 322 ± 84 | 136 ± 35 | 33.49 ± 0.90 |
| Hα Broad | 42.52 ± 0.01 | 2074 ± 107 | 754 ± 47 | 287.71 ± 1.86 |
| [N II] 6585 | 41.26 ± 0.09 | 322 ± 84 | 136 ± 35 | 16.73 ± 0.81 |
| [S II] 6718 | 41.10 ± 0.09 | 322 ± 84 | 136 ± 35 | 12.50 ± 0.89 |
| [S II] 6732 | 40.97 ± 0.11 | 322 ± 84 | 136 ± 35 | 9.18 ± 0.75 |
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 | 16.54 |
|---|---|
| Hβ Broad SNR | 7.88 |
| Hγ Broad SNR | 2.96 |
| AGN frac | 0.84 |
| Host frac | 0.16 |
| log L5100,Host | 43.25 |
| Fe II/Hβ | 0.68 |
| Fe II/[O III] | 0.55 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
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.