ESO 438-9
Observation
| Spectrum ID | 87235021_sp1 |
|---|---|
| Alt name | g1110480-283004 |
| z | 0.0238 |
| RA, Dec | 167.7000, -28.5010 |
| MJD | 60382.41 |
| SNR/Å B/R | 24.1/32.6 |
| Obs Airmass | 1.59 |
| SMSS ID | 87235021 |
| Closest SMSS | 13.18'', 87235022 |
| SMSS Mean r6"ap | 14.7 ± 0.1 |
| 2MASS Kext | 10.6 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.054 |
| Power law αν | -0.87 ± 0.06 |
| log L5100,AGN | 43.25 ± 0.01 |
| log HβBr/[O III] | 0.08 ± 0.02 |
| log ML5100/M☉ | 7.25 ± 0.06 |
| log MHα/M☉ | 6.76 ± 0.04 |
| log MHβ/M☉ | 7.04 ± 0.07 |
| log M[O III]/M☉ | 7.13 ± 0.06 |
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 | 40.16 ± 0.04 | 314 ± 63 | 232 ± 26 | 3.41 ± 0.21 |
| Hγ Broad | 40.25 ± 0.08 | 2310 ± 173 | 779 ± 38 | 4.04 ± 0.36 |
| [O III] 4364 | 39.33 ± 0.17 | 260 ± 62 | 109 ± 25 | 0.51 ± 0.12 |
| He II Narrow | 39.25 ± 0.16 | 260 ± 62 | 109 ± 25 | 0.46 ± 0.11 |
| He II Broad | 39.22 ± 0.43 | 4113 ± 202 | 1747 ± 85 | 0.43 ± 0.39 |
| Hβ Narrow | 40.63 ± 0.01 | 314 ± 63 | 232 ± 26 | 11.47 ± 0.19 |
| Hβ Broad | 40.96 ± 0.01 | 2167 ± 132 | 978 ± 33 | 24.78 ± 0.38 |
| [O III] 5007 | 40.88 ± 0.01 | 314 ± 63 | 232 ± 26 | 21.14 ± 0.19 |
| He I Narrow | 39.46 ± 0.08 | 260 ± 62 | 109 ± 25 | 0.97 ± 0.10 |
| He I Broad | 40.48 ± 0.03 | 3390 ± 108 | 1439 ± 45 | 10.10 ± 0.39 |
| [O I] 6300 | 39.67 ± 0.04 | 260 ± 62 | 109 ± 25 | 1.70 ± 0.11 |
| Hα Narrow | 41.08 ± 0.01 | 260 ± 62 | 109 ± 25 | 45.11 ± 0.17 |
| Hα Broad | 41.60 ± 0.01 | 1785 ± 65 | 722 ± 25 | 149.22 ± 0.41 |
| [N II] 6585 | 40.92 ± 0.01 | 260 ± 62 | 109 ± 25 | 31.44 ± 0.16 |
| [S II] 6718 | 40.28 ± 0.01 | 260 ± 62 | 109 ± 25 | 7.45 ± 0.15 |
| [S II] 6732 | 40.24 ± 0.01 | 260 ± 62 | 109 ± 25 | 6.76 ± 0.13 |
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 | 39.84 |
|---|---|
| Hβ Broad SNR | 10.12 |
| Hγ Broad SNR | 2.28 |
| AGN frac | 0.78 |
| Host frac | 0.22 |
| log L5100,Host | 42.71 |
| Fe II/Hβ | 1.72 |
| Fe II/[O III] | 2.09 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
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.