ESO 287-26
Observation
| Spectrum ID | 488324232_sp1 |
|---|---|
| Alt name | g2126211-431316 |
| z | 0.0167 |
| RA, Dec | 321.5877, -43.2211 |
| MJD | 59026.67 |
| SNR/Å B/R | 21.7/49.3 |
| Obs Airmass | 1.05 |
| SMSS ID | 488324232 |
| Closest SMSS | 5.74'', 2699588394 |
| SMSS Mean r6"ap | 15.3 ± 0.1 |
| 2MASS Kext | 10.8 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.8+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | -1.61 ± 0.15 |
| log L5100,AGN | 41.96 ± 0.12 |
| log HβBr/[O III] | <-0.54 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.35 ± 0.07 |
| 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 | — | — | — | — |
| He II Narrow | 38.28 ± 0.38 | 315 ± 62 | 133 ± 25 | 1.03 ± 0.61 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.03 ± 0.10 | 320 ± 62 | 134 ± 25 | 5.83 ± 0.62 |
| Hβ Broad | <39.40 | — | — | — |
| [O III] 5007 | 39.94 ± 0.01 | 320 ± 62 | 134 ± 25 | 48.04 ± 0.70 |
| He I Narrow | 37.94 ± 0.51 | 315 ± 62 | 133 ± 25 | 0.52 ± 0.40 |
| He I Broad | 39.01 ± 0.13 | 1178 ± 62 | 500 ± 25 | 6.01 ± 0.82 |
| [O I] 6300 | 38.75 ± 0.09 | 315 ± 62 | 133 ± 25 | 3.45 ± 0.42 |
| Hα Narrow | 39.89 ± 0.01 | 315 ± 62 | 133 ± 25 | 48.26 ± 0.48 |
| Hα Broad | 40.48 ± 0.01 | 2428 ± 68 | 1253 ± 38 | 185.25 ± 2.14 |
| [N II] 6585 | 39.84 ± 0.01 | 315 ± 62 | 133 ± 25 | 42.75 ± 0.47 |
| [S II] 6718 | 39.44 ± 0.02 | 315 ± 62 | 133 ± 25 | 17.35 ± 0.58 |
| [S II] 6732 | 39.44 ± 0.02 | 315 ± 62 | 133 ± 25 | 17.04 ± 0.47 |
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 | 8.19 |
|---|---|
| Hβ Broad SNR | 0.71 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.16 |
| Host frac | 0.84 |
| log L5100,Host | 42.68 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
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.