2MASS J17224354-1738455
Observation
| Spectrum ID | 185609646_sp1 |
|---|---|
| Alt name | c1722435-173846 |
| z | 0.0847 |
| RA, Dec | 260.6812, -17.6461 |
| MJD | 60162.44 |
| SNR/Å B/R | 7.7/11.7 |
| Obs Airmass | 1.03 |
| SMSS ID | 185609646 |
| Closest SMSS | 4.71'', 185609645 |
| SMSS Mean r6"ap | 17.5 ± 0.1 |
| 2MASS Kext | 12.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.302 |
| Power law αν | -1.34 ± 0.23 |
| log L5100,AGN | 43.52 ± 0.03 |
| log HβBr/[O III] | 0.13 ± 0.07 |
| log ML5100/M☉ | 7.29 ± 0.13 |
| log MHα/M☉ | 7.11 ± 0.03 |
| log MHβ/M☉ | 7.00 ± 0.14 |
| log M[O III]/M☉ | 7.07 ± 0.13 |
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 | 40.73 ± 0.13 | 1702 ± 199 | 639 ± 77 | 6.77 ± 1.29 |
| [O III] 4364 | 39.85 ± 0.32 | 336 ± 63 | 141 ± 25 | 0.99 ± 0.49 |
| He II Narrow | 39.56 ± 0.43 | 336 ± 63 | 141 ± 25 | 0.53 ± 0.46 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.52 ± 0.10 | 335 ± 63 | 159 ± 31 | 4.84 ± 0.84 |
| Hβ Broad | 41.06 ± 0.06 | 1978 ± 302 | 697 ± 31 | 17.13 ± 1.10 |
| [O III] 5007 | 40.93 ± 0.03 | 335 ± 63 | 159 ± 31 | 12.79 ± 0.94 |
| He I Narrow | 40.27 ± 0.14 | 336 ± 63 | 141 ± 25 | 3.16 ± 0.72 |
| He I Broad | 41.83 ± 0.04 | 17661 ± 62 | 7500 ± 25 | 114.55 ± 4.96 |
| [O I] 6300 | 40.41 ± 0.13 | 336 ± 63 | 141 ± 25 | 4.60 ± 0.71 |
| Hα Narrow | 41.22 ± 0.03 | 336 ± 63 | 141 ± 25 | 30.19 ± 0.82 |
| Hα Broad | 41.99 ± 0.01 | 2011 ± 69 | 789 ± 31 | 178.56 ± 2.07 |
| [N II] 6585 | 40.97 ± 0.04 | 336 ± 63 | 141 ± 25 | 17.08 ± 0.79 |
| [S II] 6718 | 40.64 ± 0.08 | 336 ± 63 | 141 ± 25 | 8.05 ± 0.95 |
| [S II] 6732 | 40.50 ± 0.09 | 336 ± 63 | 141 ± 25 | 5.90 ± 0.85 |
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 | 11.43 |
|---|---|
| Hβ Broad SNR | 2.14 |
| Hγ Broad SNR | 1.12 |
| AGN frac | 0.56 |
| Host frac | 0.44 |
| log L5100,Host | 43.41 |
| Fe II/Hβ | 2.50 |
| Fe II/[O III] | 3.42 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 1 |
hb_width | 0 |
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.