2MASX J05373307-4222299
Observation
| Spectrum ID | 18743823_sp2 |
|---|---|
| Alt name | g0537331-422230 |
| z | 0.0363 |
| RA, Dec | 84.3879, -42.3749 |
| MJD | 59995.5 |
| SNR/Å B/R | 13.9/31.4 |
| Obs Airmass | 1.14 |
| SMSS ID | 18743823 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.5 ± 0.1 |
| 2MASS Kext | 11.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | -1.61 ± 0.19 |
| log L5100,AGN | 42.55 ± 0.07 |
| log HβBr/[O III] | <0.16 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.18 ± 0.06 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | 39.50 ± 0.41 | 422 ± 64 | 215 ± 42 | 4.06 ± 3.38 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.66 ± 0.26 | 410 ± 63 | 173 ± 25 | 6.31 ± 2.34 |
| He II Narrow | 39.13 ± 0.46 | 410 ± 63 | 173 ± 25 | 1.88 ± 1.82 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.67 ± 0.22 | 422 ± 64 | 215 ± 42 | 6.51 ± 2.75 |
| Hβ Broad | <40.57 | — | — | — |
| [O III] 5007 | 40.40 ± 0.04 | 422 ± 64 | 215 ± 42 | 35.72 ± 2.76 |
| He I Narrow | 38.92 ± 0.44 | 410 ± 63 | 173 ± 25 | 1.29 ± 0.95 |
| He I Broad | 40.25 ± 0.11 | 5191 ± 62 | 2204 ± 25 | 27.49 ± 3.50 |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 40.23 ± 0.05 | 410 ± 63 | 173 ± 25 | 27.13 ± 1.10 |
| Hα Broad | 41.48 ± 0.01 | 3124 ± 201 | 1515 ± 25 | 480.05 ± 3.67 |
| [N II] 6585 | 39.43 ± 0.20 | 410 ± 63 | 173 ± 25 | 4.31 ± 1.07 |
| [S II] 6718 | 39.06 ± 0.34 | 410 ± 63 | 173 ± 25 | 1.86 ± 1.02 |
| [S II] 6732 | 39.75 ± 0.09 | 410 ± 63 | 173 ± 25 | 9.05 ± 1.07 |
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 | 7.23 |
|---|---|
| Hβ Broad SNR | 0.97 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.11 |
| Host frac | 0.89 |
| log L5100,Host | 43.47 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 2 |
balmer | 2 |
balmer_snr | 2 |
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.