IRAS 08029-0551
Observation
| Spectrum ID | 74370426_sp1 |
|---|---|
| Alt name | 3067175994508522752 |
| z | 0.0982 |
| RA, Dec | 121.3432, -6.0082 |
| MJD | 60656.71 |
| SNR/Å B/R | 8.4/20.3 |
| Obs Airmass | 1.11 |
| SMSS ID | 74370426 |
| Closest SMSS | 14.78'', 74370427 |
| SMSS Mean r6"ap | 16.2 ± 0.1 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | AllBRICQS2 |
| MW E(B−V) | 0.044 |
| Power law αν | -1.99 ± 0.01 |
| log L5100,AGN | 44.00 ± 0.01 |
| log HβBr/[O III] | -0.27 ± 0.02 |
| log ML5100/M☉ | 7.46 ± 0.09 |
| log MHα/M☉ | 8.27 ± 0.04 |
| log MHβ/M☉ | 7.55 ± 0.10 |
| log M[O III]/M☉ | 7.87 ± 0.10 |
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 | 41.02 ± 0.39 | 1018 ± 64 | 515 ± 25 | 5.31 ± 1.11 |
| Hγ Broad | 41.45 ± 0.16 | 1386 ± 105 | 476 ± 30 | 11.87 ± 1.20 |
| [O III] 4364 | 41.13 ± 0.10 | 814 ± 63 | 345 ± 25 | 6.88 ± 0.90 |
| He II Narrow | — | — | — | — |
| He II Broad | 41.58 ± 0.07 | 3301 ± 63 | 1402 ± 25 | 19.30 ± 1.53 |
| Hβ Narrow | 41.39 ± 0.13 | 1018 ± 64 | 515 ± 25 | 12.64 ± 1.04 |
| Hβ Broad | 42.36 ± 0.02 | 1902 ± 202 | 2598 ± 54 | 116.61 ± 2.75 |
| [O III] 5007 | 42.63 ± 0.01 | 1018 ± 64 | 515 ± 25 | 216.16 ± 1.26 |
| He I Narrow | 40.72 ± 0.19 | 814 ± 63 | 345 ± 25 | 2.69 ± 0.41 |
| He I Broad | 40.37 ± 0.45 | 1179 ± 62 | 501 ± 25 | 1.20 ± 0.47 |
| [O I] 6300 | 40.60 ± 0.16 | 814 ± 63 | 345 ± 25 | 2.05 ± 0.43 |
| Hα Narrow | 42.70 ± 0.01 | 814 ± 63 | 345 ± 25 | 258.71 ± 0.86 |
| Hα Broad | 43.04 ± 0.01 | 3671 ± 65 | 2270 ± 30 | 560.54 ± 2.20 |
| [N II] 6585 | 42.25 ± 0.01 | 814 ± 63 | 345 ± 25 | 90.43 ± 0.84 |
| [S II] 6718 | 40.23 ± 0.36 | 814 ± 63 | 345 ± 25 | 0.87 ± 0.45 |
| [S II] 6732 | 40.58 ± 0.19 | 814 ± 63 | 345 ± 25 | 1.94 ± 0.46 |
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 | 24.98 |
|---|---|
| Hβ Broad SNR | 8.07 |
| Hγ Broad SNR | 3.33 |
| AGN frac | 0.74 |
| Host frac | 0.26 |
| log L5100,Host | 43.54 |
| Fe II/Hβ | 0.62 |
| Fe II/[O III] | 0.34 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 2 |
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.