IRAS 19237-1831
Observation
| Spectrum ID | 264081448_sp1 |
|---|---|
| Alt name | UVQSJ192636.95-182553.0 |
| z | 0.0786 |
| RA, Dec | 291.6540, -18.4314 |
| MJD | 60905.44 |
| SNR/Å B/R | 12.0/13.6 |
| Obs Airmass | 1.06 |
| SMSS ID | 264081448 |
| Closest SMSS | 12.47'', 264081449 |
| SMSS Mean r6"ap | 14.4 ± 0.1 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | UVQS |
| MW E(B−V) | 0.087 |
| Power law αν | 0.47 ± 0.03 |
| log L5100,AGN | 44.62 ± 0.01 |
| log HβBr/[O III] | 0.60 ± 0.04 |
| log ML5100/M☉ | 8.30 ± 0.07 |
| log MHα/M☉ | 8.10 ± 0.07 |
| log MHβ/M☉ | 8.40 ± 0.07 |
| log M[O III]/M☉ | 8.32 ± 0.07 |
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 | 41.24 ± 0.27 | 494 ± 88 | 397 ± 79 | 1.72 ± 0.45 |
| Hγ Broad | 42.42 ± 0.04 | 2388 ± 413 | 912 ± 69 | 21.15 ± 0.71 |
| [O III] 4364 | 41.23 ± 0.18 | 409 ± 96 | 173 ± 40 | 1.57 ± 0.26 |
| He II Narrow | 40.93 ± 0.24 | 409 ± 96 | 173 ± 40 | 0.94 ± 0.27 |
| He II Broad | 41.69 ± 0.12 | 3098 ± 411 | 1315 ± 174 | 4.95 ± 0.72 |
| Hβ Narrow | 42.01 ± 0.10 | 494 ± 88 | 398 ± 79 | 11.52 ± 0.59 |
| Hβ Broad | 42.98 ± 0.02 | 3652 ± 275 | 1483 ± 227 | 106.56 ± 1.08 |
| [O III] 5007 | 42.39 ± 0.04 | 494 ± 88 | 398 ± 79 | 28.79 ± 0.59 |
| He I Narrow | 40.57 ± 0.33 | 409 ± 96 | 173 ± 40 | 0.74 ± 0.28 |
| He I Broad | 41.85 ± 0.06 | 2566 ± 365 | 1090 ± 155 | 12.21 ± 0.74 |
| [O I] 6300 | 40.64 ± 0.24 | 409 ± 96 | 173 ± 40 | 1.01 ± 0.31 |
| Hα Narrow | 42.21 ± 0.08 | 409 ± 96 | 173 ± 40 | 37.58 ± 0.81 |
| Hα Broad | 43.48 ± 0.01 | 2214 ± 93 | 1213 ± 39 | 687.31 ± 1.75 |
| [N II] 6585 | 40.60 ± 0.41 | 409 ± 96 | 173 ± 40 | 1.05 ± 0.62 |
| [S II] 6718 | 41.21 ± 0.11 | 409 ± 96 | 173 ± 40 | 4.22 ± 0.45 |
| [S II] 6732 | 41.13 ± 0.11 | 409 ± 96 | 173 ± 40 | 3.44 ± 0.45 |
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 | 45.28 |
|---|---|
| Hβ Broad SNR | 13.93 |
| Hγ Broad SNR | 6.69 |
| AGN frac | 0.91 |
| Host frac | 0.09 |
| log L5100,Host | 43.62 |
| Fe II/Hβ | 0.82 |
| Fe II/[O III] | 3.28 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
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.