2MASS J07282338-4408241
Observation
| Spectrum ID | 470026228_sp1 |
|---|---|
| Alt name | g0728234-440824 |
| z | 0.0816 |
| RA, Dec | 112.0974, -44.1401 |
| MJD | 60288.66 |
| SNR/Å B/R | 9.1/13.6 |
| Obs Airmass | 1.03 |
| SMSS ID | 470026228 |
| Closest SMSS | 13.42'', 470026227 |
| SMSS Mean r6"ap | 17.3 ± 0.2 |
| 2MASS Kext | 12.8 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.302 |
| Power law αν | -0.62 ± 0.23 |
| log L5100,AGN | 43.68 ± 0.03 |
| log HβBr/[O III] | 0.45 ± 0.02 |
| log ML5100/M☉ | 7.82 ± 0.04 |
| log MHα/M☉ | 8.00 ± 0.04 |
| log MHβ/M☉ | 7.95 ± 0.03 |
| log M[O III]/M☉ | 7.90 ± 0.03 |
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 | 40.12 ± 0.31 | 380 ± 63 | 184 ± 26 | 1.10 ± 0.48 |
| Hγ Broad | 41.58 ± 0.04 | 2517 ± 636 | 1428 ± 84 | 32.68 ± 1.62 |
| [O III] 4364 | 40.72 ± 0.08 | 366 ± 63 | 155 ± 25 | 4.52 ± 0.46 |
| He II Narrow | 40.28 ± 0.16 | 366 ± 63 | 155 ± 25 | 1.78 ± 0.41 |
| He II Broad | 40.76 ± 0.23 | 4275 ± 627 | 1815 ± 266 | 4.93 ± 1.37 |
| Hβ Narrow | 40.75 ± 0.07 | 380 ± 63 | 184 ± 26 | 5.53 ± 0.53 |
| Hβ Broad | 42.14 ± 0.01 | 3355 ± 126 | 1753 ± 74 | 137.91 ± 2.07 |
| [O III] 5007 | 41.69 ± 0.01 | 380 ± 63 | 184 ± 26 | 50.26 ± 0.53 |
| He I Narrow | 39.89 ± 0.26 | 366 ± 63 | 155 ± 25 | 0.99 ± 0.52 |
| He I Broad | 41.42 ± 0.04 | 5099 ± 216 | 2165 ± 91 | 34.23 ± 1.71 |
| [O I] 6300 | 40.51 ± 0.06 | 366 ± 63 | 155 ± 25 | 4.57 ± 0.45 |
| Hα Narrow | 41.35 ± 0.02 | 366 ± 63 | 155 ± 25 | 33.69 ± 0.70 |
| Hα Broad | 42.79 ± 0.01 | 3197 ± 64 | 1406 ± 29 | 927.04 ± 2.85 |
| [N II] 6585 | 41.04 ± 0.03 | 366 ± 63 | 155 ± 25 | 16.65 ± 0.66 |
| [S II] 6718 | 40.67 ± 0.05 | 366 ± 63 | 155 ± 25 | 7.20 ± 0.69 |
| [S II] 6732 | 40.67 ± 0.06 | 366 ± 63 | 155 ± 25 | 7.19 ± 0.72 |
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 | 37.59 |
|---|---|
| Hβ Broad SNR | 9.92 |
| Hγ Broad SNR | 4.03 |
| AGN frac | 0.68 |
| Host frac | 0.32 |
| log L5100,Host | 43.36 |
| Fe II/Hβ | 0.33 |
| Fe II/[O III] | 0.95 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 1 |
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.