IRAS 05472-2426
Observation
| Spectrum ID | 23413704_sp1 |
|---|---|
| Alt name | g0549149-242552 |
| z | 0.0451 |
| RA, Dec | 87.3120, -24.4310 |
| MJD | 59995.51 |
| SNR/Å B/R | 9.5/17.7 |
| Obs Airmass | 1.17 |
| SMSS ID | 23413704 |
| Closest SMSS | 5.04'', 2046480898 |
| SMSS Mean r6"ap | 15.8 ± 0.0 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_all |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | -1.01 ± 0.10 |
| log L5100,AGN | 43.45 ± 0.03 |
| log HβBr/[O III] | -0.04 ± 0.04 |
| log ML5100/M☉ | 7.20 ± 0.11 |
| log MHα/M☉ | 6.84 ± 0.04 |
| log MHβ/M☉ | 6.99 ± 0.12 |
| log M[O III]/M☉ | 7.15 ± 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 | 39.60 ± 0.45 | 395 ± 63 | 156 ± 25 | 0.63 ± 0.49 |
| Hγ Broad | 40.59 ± 0.15 | 1410 ± 126 | 530 ± 40 | 5.26 ± 1.08 |
| [O III] 4364 | 39.68 ± 0.35 | 303 ± 63 | 128 ± 25 | 0.74 ± 0.47 |
| He II Narrow | 39.87 ± 0.29 | 303 ± 63 | 128 ± 25 | 1.23 ± 0.42 |
| He II Broad | 40.35 ± 0.21 | 1464 ± 64 | 621 ± 26 | 3.77 ± 0.92 |
| Hβ Narrow | 40.05 ± 0.24 | 395 ± 63 | 156 ± 25 | 1.96 ± 0.44 |
| Hβ Broad | 41.17 ± 0.04 | 1840 ± 233 | 715 ± 45 | 25.69 ± 1.14 |
| [O III] 5007 | 41.21 ± 0.01 | 395 ± 63 | 156 ± 25 | 29.12 ± 0.47 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.49 ± 0.10 | 2381 ± 69 | 1011 ± 28 | 6.56 ± 0.77 |
| [O I] 6300 | 39.84 ± 0.13 | 303 ± 63 | 128 ± 25 | 1.56 ± 0.29 |
| Hα Narrow | 40.78 ± 0.03 | 303 ± 63 | 128 ± 25 | 14.20 ± 0.39 |
| Hα Broad | 41.75 ± 0.01 | 1747 ± 67 | 693 ± 28 | 132.80 ± 1.10 |
| [N II] 6585 | — | — | — | — |
| [S II] 6718 | 40.39 ± 0.04 | 303 ± 63 | 128 ± 25 | 5.85 ± 0.32 |
| [S II] 6732 | 40.38 ± 0.04 | 303 ± 63 | 128 ± 25 | 5.81 ± 0.33 |
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 | 11.88 |
|---|---|
| Hβ Broad SNR | 4.08 |
| Hγ Broad SNR | 1.62 |
| AGN frac | 0.57 |
| Host frac | 0.43 |
| log L5100,Host | 43.33 |
| Fe II/Hβ | 0.85 |
| Fe II/[O III] | 0.77 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.