ESO 187-2
Observation
| Spectrum ID | 482032674_sp1 |
|---|---|
| Alt name | g2041351-534037 |
| z | 0.0417 |
| RA, Dec | 310.3962, -53.6771 |
| MJD | 60166.52 |
| SNR/Å B/R | 15.0/33.8 |
| Obs Airmass | 1.11 |
| SMSS ID | 482032674 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.0 ± 0.1 |
| 2MASS Kext | 11.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.033 |
| Power law αν | -1.77 ± 0.23 |
| log L5100,AGN | 42.19 ± 0.08 |
| log HβBr/[O III] | -0.51 ± 0.03 |
| log ML5100/M☉ | 7.05 ± 0.36 |
| log MHα/M☉ | 7.01 ± 0.03 |
| log MHβ/M☉ | 7.14 ± 0.36 |
| log M[O III]/M☉ | 7.51 ± 0.35 |
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 | 39.76 ± 0.08 | 300 ± 62 | 189 ± 26 | 18.14 ± 2.83 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.42 ± 0.14 | 290 ± 62 | 122 ± 25 | 8.37 ± 1.60 |
| He II Narrow | 39.19 ± 0.22 | 290 ± 62 | 122 ± 25 | 5.05 ± 1.47 |
| He II Broad | 39.97 ± 0.14 | 3761 ± 68 | 1597 ± 27 | 30.09 ± 5.47 |
| Hβ Narrow | 40.06 ± 0.04 | 300 ± 62 | 189 ± 26 | 37.55 ± 2.50 |
| Hβ Broad | 40.63 ± 0.03 | 2908 ± 953 | 1512 ± 37 | 140.43 ± 6.04 |
| [O III] 5007 | 41.15 ± 0.01 | 300 ± 62 | 189 ± 26 | 461.04 ± 2.80 |
| He I Narrow | 39.14 ± 0.20 | 290 ± 62 | 122 ± 25 | 4.75 ± 0.94 |
| He I Broad | 39.65 ± 0.12 | 1179 ± 62 | 500 ± 25 | 15.14 ± 1.92 |
| [O I] 6300 | 39.89 ± 0.03 | 290 ± 62 | 122 ± 25 | 27.19 ± 1.05 |
| Hα Narrow | 40.70 ± 0.01 | 290 ± 62 | 122 ± 25 | 175.64 ± 1.59 |
| Hα Broad | 41.49 ± 0.01 | 2553 ± 72 | 1075 ± 25 | 1083.61 ± 4.37 |
| [N II] 6585 | 40.88 ± 0.01 | 290 ± 62 | 122 ± 25 | 263.47 ± 1.70 |
| [S II] 6718 | 40.33 ± 0.01 | 290 ± 62 | 122 ± 25 | 74.35 ± 1.09 |
| [S II] 6732 | 40.31 ± 0.01 | 290 ± 62 | 122 ± 25 | 71.33 ± 1.11 |
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 | 21.70 |
|---|---|
| Hβ Broad SNR | 3.51 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.10 |
| Host frac | 0.90 |
| log L5100,Host | 43.15 |
| Fe II/Hβ | 0.60 |
| Fe II/[O III] | 0.18 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 0 |
balmer_snr | 2 |
hb_width | 1 |
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.