2MASX J21075991-2950089
Observation
| Spectrum ID | 250581_sp1 |
|---|---|
| Alt name | g2107599-295009 |
| z | 0.0198 |
| RA, Dec | 316.9997, -29.8358 |
| MJD | 60166.54 |
| SNR/Å B/R | 19.3/39.9 |
| Obs Airmass | 1.03 |
| SMSS ID | 250581 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.2 ± 0.0 |
| 2MASS Kext | 10.8 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.087 |
| Power law αν | -1.98 ± 0.02 |
| log L5100,AGN | 42.09 ± 0.05 |
| log HβBr/[O III] | -0.21 ± 0.11 |
| log ML5100/M☉ | 6.41 ± 0.09 |
| log MHα/M☉ | 6.81 ± 0.05 |
| log MHβ/M☉ | 6.03 ± 0.12 |
| log M[O III]/M☉ | 6.21 ± 0.11 |
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 | 38.83 ± 0.25 | 307 ± 63 | 136 ± 26 | 2.74 ± 1.21 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.51 ± 0.05 | 307 ± 63 | 136 ± 26 | 13.03 ± 0.95 |
| Hβ Broad | 39.49 ± 0.10 | 1464 ± 128 | 491 ± 56 | 11.73 ± 1.75 |
| [O III] 5007 | 39.70 ± 0.03 | 307 ± 63 | 136 ± 26 | 20.57 ± 0.91 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.87 ± 0.09 | 9783 ± 62 | 4154 ± 25 | 30.83 ± 5.41 |
| [O I] 6300 | 38.84 ± 0.13 | 308 ± 62 | 128 ± 25 | 2.87 ± 0.49 |
| Hα Narrow | 40.22 ± 0.01 | 308 ± 62 | 128 ± 25 | 69.92 ± 0.58 |
| Hα Broad | 40.78 ± 0.01 | 3356 ± 76 | 2212 ± 48 | 250.32 ± 3.19 |
| [N II] 6585 | 40.01 ± 0.01 | 308 ± 62 | 128 ± 25 | 43.16 ± 0.57 |
| [S II] 6718 | 39.41 ± 0.04 | 308 ± 62 | 128 ± 25 | 10.83 ± 0.54 |
| [S II] 6732 | 39.25 ± 0.06 | 308 ± 62 | 128 ± 25 | 7.45 ± 0.58 |
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 | 6.39 |
|---|---|
| Hβ Broad SNR | 1.35 |
| Hγ Broad SNR | 0.49 |
| AGN frac | 0.15 |
| Host frac | 0.85 |
| log L5100,Host | 42.84 |
| Fe II/Hβ | 2.83 |
| Fe II/[O III] | 1.62 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 2 |
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.