ESO 264-52
Observation
| Spectrum ID | 410366359_sp1 |
|---|---|
| Alt name | g1057139-474011 |
| z | 0.0154 |
| RA, Dec | 164.3079, -47.6698 |
| MJD | 60413.43 |
| SNR/Å B/R | 13.5/19.1 |
| Obs Airmass | 1.07 |
| SMSS ID | 410366359 |
| Closest SMSS | 11.17'', 410366146 |
| SMSS Mean r6"ap | 15.6 ± 0.1 |
| 2MASS Kext | 11.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.165 |
| Power law αν | -1.06 ± 0.11 |
| log L5100,AGN | 42.45 ± 0.02 |
| log HβBr/[O III] | -0.78 ± 0.07 |
| log ML5100/M☉ | 7.13 ± 0.23 |
| log MHα/M☉ | 6.57 ± 0.06 |
| log MHβ/M☉ | 6.99 ± 0.24 |
| log M[O III]/M☉ | 7.48 ± 0.23 |
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 | 39.86 ± 0.05 | 279 ± 62 | 209 ± 28 | 11.11 ± 0.70 |
| Hγ Broad | 39.77 ± 0.13 | 1409 ± 205 | 513 ± 81 | 7.97 ± 0.90 |
| [O III] 4364 | 39.38 ± 0.07 | 264 ± 63 | 110 ± 25 | 3.75 ± 0.37 |
| He II Narrow | 39.14 ± 0.12 | 264 ± 63 | 110 ± 25 | 2.32 ± 0.31 |
| He II Broad | 39.95 ± 0.11 | 2038 ± 348 | 866 ± 148 | 13.78 ± 0.88 |
| Hβ Narrow | 40.31 ± 0.02 | 279 ± 62 | 209 ± 28 | 34.77 ± 0.61 |
| Hβ Broad | 40.39 ± 0.07 | 2781 ± 650 | 991 ± 206 | 40.79 ± 1.07 |
| [O III] 5007 | 41.17 ± 0.01 | 279 ± 62 | 210 ± 28 | 259.90 ± 0.74 |
| He I Narrow | 39.07 ± 0.12 | 264 ± 63 | 110 ± 25 | 2.40 ± 0.29 |
| He I Broad | 39.56 ± 0.09 | 1488 ± 206 | 632 ± 87 | 7.79 ± 0.71 |
| [O I] 6300 | 39.77 ± 0.02 | 264 ± 63 | 110 ± 25 | 12.84 ± 0.31 |
| Hα Narrow | 40.74 ± 0.01 | 264 ± 63 | 110 ± 25 | 127.07 ± 0.48 |
| Hα Broad | 41.10 ± 0.01 | 2029 ± 119 | 841 ± 62 | 298.63 ± 1.14 |
| [N II] 6585 | 40.27 ± 0.02 | 264 ± 63 | 110 ± 25 | 42.64 ± 0.38 |
| [S II] 6718 | 40.02 ± 0.01 | 264 ± 63 | 110 ± 25 | 24.68 ± 0.36 |
| [S II] 6732 | 39.99 ± 0.01 | 264 ± 63 | 110 ± 25 | 23.04 ± 0.38 |
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 | 24.78 |
|---|---|
| Hβ Broad SNR | 5.03 |
| Hγ Broad SNR | 2.38 |
| AGN frac | 0.46 |
| Host frac | 0.54 |
| log L5100,Host | 42.52 |
| Fe II/Hβ | 0.55 |
| Fe II/[O III] | 0.09 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 0 |
balmer_snr | 1 |
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.