IRAS 20562-3159
Observation
| Spectrum ID | 234201192_sp1 |
|---|---|
| Alt name | g2059207-314735 |
| z | 0.0734 |
| RA, Dec | 314.8364, -31.7930 |
| MJD | 60083.77 |
| SNR/Å B/R | 14.2/20.0 |
| Obs Airmass | 1.01 |
| SMSS ID | 234201192 |
| Closest SMSS | 14.03'', 234201207 |
| SMSS Mean r6"ap | 16.1 ± 0.1 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.085 |
| Power law αν | -0.62 ± 0.10 |
| log L5100,AGN | 43.82 ± 0.01 |
| log HβBr/[O III] | -0.40 ± 0.23 |
| log ML5100/M☉ | 7.62 ± 0.03 |
| log MHα/M☉ | 7.00 ± 0.04 |
| log MHβ/M☉ | 7.39 ± 0.12 |
| log M[O III]/M☉ | 7.74 ± 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 | 40.90 ± 0.05 | 405 ± 63 | 232 ± 25 | 4.93 ± 0.27 |
| Hγ Broad | 41.14 ± 0.08 | 3057 ± 549 | 1238 ± 87 | 8.15 ± 0.71 |
| [O III] 4364 | 40.02 ± 0.26 | 397 ± 62 | 169 ± 25 | 0.65 ± 0.23 |
| He II Narrow | 40.40 ± 0.09 | 397 ± 62 | 169 ± 25 | 1.71 ± 0.22 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 41.38 ± 0.02 | 405 ± 63 | 232 ± 25 | 17.48 ± 0.30 |
| Hβ Broad | 41.50 +0.44−0.03 | 2480 ± 85 | 924 ± 37 | 22.61 ± 0.64 |
| [O III] 5007 | 41.90 ± 0.01 | 405 ± 63 | 232 ± 25 | 59.09 ± 0.35 |
| He I Narrow | 40.47 ± 0.07 | 397 ± 62 | 169 ± 25 | 2.79 ± 0.28 |
| He I Broad | 41.18 ± 0.05 | 4654 ± 170 | 1977 ± 72 | 14.24 ± 0.81 |
| [O I] 6300 | 40.57 ± 0.04 | 397 ± 62 | 169 ± 25 | 3.83 ± 0.23 |
| Hα Narrow | 41.97 ± 0.01 | 397 ± 62 | 169 ± 25 | 101.09 ± 0.40 |
| Hα Broad | 42.20 ± 0.01 | 1533 ± 66 | 854 ± 25 | 172.45 ± 0.87 |
| [N II] 6585 | 41.66 ± 0.01 | 397 ± 62 | 169 ± 25 | 50.49 ± 0.36 |
| [S II] 6718 | 41.23 ± 0.01 | 397 ± 62 | 169 ± 25 | 19.34 ± 0.30 |
| [S II] 6732 | 41.10 ± 0.01 | 397 ± 62 | 169 ± 25 | 14.28 ± 0.35 |
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 | 25.04 |
|---|---|
| Hβ Broad SNR | 5.23 |
| Hγ Broad SNR | 2.04 |
| AGN frac | 0.81 |
| Host frac | 0.19 |
| log L5100,Host | 43.19 |
| 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.