IRAS 15091-2107
Observation
| Spectrum ID | 118554767_sp1 |
|---|---|
| Alt name | g1511598-211902 |
| z | 0.0443 |
| RA, Dec | 227.9992, -21.3170 |
| MJD | 61112.75 |
| SNR/Å B/R | 9.3/19.8 |
| Obs Airmass | 1.02 |
| SMSS ID | 118554767 |
| Closest SMSS | 11.30'', 118554827 |
| SMSS Mean r6"ap | 15.1 ± 0.1 |
| 2MASS Kext | 10.6 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.102 |
| Power law αν | -1.97 ± 0.02 |
| log L5100,AGN | 43.41 ± 0.01 |
| log HβBr/[O III] | -0.32 ± 0.20 |
| log ML5100/M☉ | 7.19 ± 0.03 |
| log MHα/M☉ | 7.18 ± 0.03 |
| log MHβ/M☉ | 7.10 ± 0.11 |
| log M[O III]/M☉ | 7.40 ± 0.02 |
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 | 40.28 ± 0.15 | 360 ± 63 | 213 ± 25 | 3.75 ± 0.53 |
| Hγ Broad | 40.98 ± 0.06 | 1383 ± 135 | 717 ± 78 | 18.96 ± 1.35 |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 40.07 ± 0.12 | 345 ± 63 | 146 ± 25 | 2.29 ± 0.37 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.86 ± 0.03 | 360 ± 63 | 213 ± 25 | 14.09 ± 0.51 |
| Hβ Broad | 41.39 +0.38−0.02 | 1863 ± 47 | 679 ± 26 | 48.62 ± 0.90 |
| [O III] 5007 | 41.72 ± 0.01 | 360 ± 63 | 213 ± 25 | 101.98 ± 0.48 |
| He I Narrow | 40.18 ± 0.05 | 345 ± 63 | 146 ± 25 | 3.00 ± 0.22 |
| He I Broad | 40.93 ± 0.03 | 3807 ± 88 | 1617 ± 36 | 16.64 ± 0.72 |
| [O I] 6300 | 40.31 ± 0.04 | 345 ± 63 | 146 ± 25 | 4.01 ± 0.22 |
| Hα Narrow | 41.43 ± 0.01 | 345 ± 63 | 146 ± 25 | 53.41 ± 0.40 |
| Hα Broad | 42.31 ± 0.01 | 1758 ± 64 | 962 ± 25 | 403.30 ± 0.98 |
| [N II] 6585 | 41.12 ± 0.01 | 345 ± 63 | 146 ± 25 | 26.12 ± 0.37 |
| [S II] 6718 | 40.80 ± 0.01 | 345 ± 63 | 146 ± 25 | 12.53 ± 0.24 |
| [S II] 6732 | 40.74 ± 0.01 | 345 ± 63 | 146 ± 25 | 10.81 ± 0.24 |
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 | 48.66 |
|---|---|
| Hβ Broad SNR | 9.42 |
| Hγ Broad SNR | 4.41 |
| AGN frac | 0.81 |
| Host frac | 0.19 |
| log L5100,Host | 42.79 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.