2MASS J19042028-4103031
Observation
| Spectrum ID | 210878494_sp1 |
|---|---|
| Alt name | g1904203-410303 |
| z | 0.0676 |
| RA, Dec | 286.0845, -41.0508 |
| MJD | 60082.67 |
| SNR/Å B/R | 12.1/15.7 |
| Obs Airmass | 1.06 |
| SMSS ID | 210878494 |
| Closest SMSS | 9.75'', 2308301623 |
| SMSS Mean r6"ap | 17.1 ± 0.1 |
| 2MASS Kext | 13.2 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.093 |
| Power law αν | 0.01 ± 0.12 |
| log L5100,AGN | 43.45 ± 0.01 |
| log HβBr/[O III] | 0.22 ± 0.15 |
| log ML5100/M☉ | 7.58 ± 0.02 |
| log MHα/M☉ | 7.17 ± 0.03 |
| log MHβ/M☉ | 7.48 ± 0.08 |
| log M[O III]/M☉ | 7.52 ± 0.02 |
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 | 39.77 ± 0.22 | 223 ± 63 | 117 ± 25 | 0.77 ± 0.22 |
| Hγ Broad | 40.96 ± 0.05 | 3214 ± 112 | 1192 ± 38 | 11.85 ± 0.76 |
| [O III] 4364 | 39.41 ± 0.33 | 212 ± 63 | 88 ± 25 | 0.34 ± 0.18 |
| He II Narrow | 39.87 ± 0.11 | 212 ± 63 | 88 ± 25 | 1.12 ± 0.18 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.20 ± 0.07 | 223 ± 63 | 117 ± 25 | 2.58 ± 0.23 |
| Hβ Broad | 41.42 +0.29−0.02 | 2862 ± 38 | 1056 ± 25 | 42.73 ± 0.80 |
| [O III] 5007 | 41.19 ± 0.01 | 223 ± 63 | 117 ± 25 | 26.96 ± 0.28 |
| He I Narrow | 39.09 ± 0.36 | 212 ± 63 | 88 ± 25 | 0.30 ± 0.19 |
| He I Broad | 40.69 ± 0.06 | 3418 ± 68 | 1452 ± 28 | 11.74 ± 0.83 |
| [O I] 6300 | 39.43 ± 0.17 | 212 ± 63 | 88 ± 25 | 0.75 ± 0.20 |
| Hα Narrow | 40.73 ± 0.02 | 212 ± 63 | 88 ± 25 | 16.27 ± 0.32 |
| Hα Broad | 41.95 ± 0.01 | 2221 ± 67 | 972 ± 25 | 266.82 ± 1.15 |
| [N II] 6585 | 40.65 ± 0.02 | 212 ± 63 | 88 ± 25 | 13.52 ± 0.28 |
| [S II] 6718 | 40.24 ± 0.03 | 212 ± 63 | 88 ± 25 | 5.44 ± 0.27 |
| [S II] 6732 | 40.12 ± 0.05 | 212 ± 63 | 88 ± 25 | 4.20 ± 0.27 |
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 | 22.33 |
|---|---|
| Hβ Broad SNR | 7.54 |
| Hγ Broad SNR | 2.66 |
| AGN frac | 0.86 |
| Host frac | 0.14 |
| log L5100,Host | 42.68 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 0 |
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.