6dFGS gJ185630.1-285502
Observation
| Spectrum ID | 230101829_sp1 |
|---|---|
| Alt name | g1856301-285502 |
| z | 0.0992 |
| RA, Dec | 284.1253, -28.9172 |
| MJD | 60080.74 |
| SNR/Å B/R | 11.2/13.6 |
| Obs Airmass | 1.00 |
| SMSS ID | 230101829 |
| Closest SMSS | 8.53'', 230101830 |
| SMSS Mean r6"ap | 17.1 ± 0.1 |
| 2MASS Kext | 12.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.162 |
| Power law αν | -1.49 ± 0.06 |
| log L5100,AGN | 43.73 ± 0.02 |
| log HβBr/[O III] | 0.29 ± 0.03 |
| log ML5100/M☉ | 7.70 ± 0.03 |
| log MHα/M☉ | 7.67 ± 0.03 |
| log MHβ/M☉ | 7.73 ± 0.04 |
| log M[O III]/M☉ | 7.76 ± 0.03 |
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 | 40.18 ± 0.34 | 400 ± 63 | 349 ± 28 | 1.32 ± 0.72 |
| Hγ Broad | 41.53 ± 0.04 | 3276 ± 135 | 1068 ± 35 | 28.46 ± 1.03 |
| [O III] 4364 | 39.91 ± 0.40 | 368 ± 63 | 156 ± 25 | 0.71 ± 0.47 |
| He II Narrow | 39.84 ± 0.41 | 368 ± 63 | 156 ± 25 | 0.62 ± 0.38 |
| He II Broad | 40.58 ± 0.18 | 1180 ± 63 | 501 ± 25 | 3.40 ± 0.75 |
| Hβ Narrow | 40.95 ± 0.06 | 400 ± 63 | 349 ± 28 | 8.17 ± 0.77 |
| Hβ Broad | 41.98 ± 0.02 | 2844 ± 108 | 1853 ± 89 | 87.50 ± 2.39 |
| [O III] 5007 | 41.69 ± 0.01 | 400 ± 63 | 349 ± 28 | 46.08 ± 0.89 |
| He I Narrow | 40.50 ± 0.08 | 368 ± 63 | 156 ± 25 | 3.20 ± 0.38 |
| He I Broad | 41.10 ± 0.08 | 4915 ± 131 | 2087 ± 55 | 12.71 ± 1.40 |
| [O I] 6300 | 39.92 ± 0.29 | 368 ± 63 | 156 ± 25 | 0.88 ± 0.40 |
| Hα Narrow | 41.22 ± 0.03 | 368 ± 63 | 156 ± 25 | 17.95 ± 0.48 |
| Hα Broad | 42.48 ± 0.01 | 2733 ± 67 | 1307 ± 46 | 319.54 ± 2.82 |
| [N II] 6585 | 41.16 ± 0.03 | 368 ± 63 | 156 ± 25 | 15.50 ± 0.64 |
| [S II] 6718 | 40.66 ± 0.06 | 368 ± 63 | 156 ± 25 | 4.92 ± 0.51 |
| [S II] 6732 | 40.71 ± 0.06 | 368 ± 63 | 156 ± 25 | 5.59 ± 0.51 |
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 | 20.18 |
|---|---|
| Hβ Broad SNR | 7.18 |
| Hγ Broad SNR | 3.86 |
| AGN frac | 0.61 |
| Host frac | 0.39 |
| log L5100,Host | 43.54 |
| Fe II/Hβ | 0.52 |
| Fe II/[O III] | 1.00 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.