2MASX J05185518-0312476
Observation
| Spectrum ID | 27090109_sp1 |
|---|---|
| Alt name | g0518552-031247 |
| z | 0.0481 |
| RA, Dec | 79.7298, -3.2132 |
| MJD | 60963.73 |
| SNR/Å B/R | 8.5/18.8 |
| Obs Airmass | 1.13 |
| SMSS ID | 27090109 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.1 ± 0.0 |
| 2MASS Kext | 11.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.263 |
| Power law αν | -0.88 ± 0.16 |
| log L5100,AGN | 42.64 ± 0.07 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | — |
| 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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.41 ± 0.36 | 363 ± 62 | 152 ± 25 | 2.52 ± 1.68 |
| He II Narrow | 39.47 ± 0.35 | 363 ± 62 | 152 ± 25 | 3.13 ± 1.57 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.91 ± 0.16 | 369 ± 63 | 245 ± 79 | 8.59 ± 3.11 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 39.99 ± 0.12 | 369 ± 63 | 245 ± 79 | 10.57 ± 2.92 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 40.75 ± 0.02 | 363 ± 62 | 152 ± 25 | 88.60 ± 1.88 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.45 ± 0.03 | 363 ± 62 | 152 ± 25 | 44.03 ± 1.66 |
| [S II] 6718 | 39.97 ± 0.07 | 363 ± 62 | 152 ± 25 | 14.91 ± 1.48 |
| [S II] 6732 | 39.76 ± 0.12 | 363 ± 62 | 152 ± 25 | 9.17 ± 1.49 |
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 | 0.19 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.17 |
| Host frac | 0.83 |
| log L5100,Host | 43.33 |
| Fe II/Hβ | — |
| Fe II/[O III] | 4.49 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.