SDSS J214903.96-014111.7
Observation
| Spectrum ID | 5439861_sp1 |
|---|---|
| Alt name | g2149040-014112 |
| z | 0.0527 |
| RA, Dec | 327.2665, -1.6866 |
| MJD | 60091.75 |
| SNR/Å B/R | 8.5/14.1 |
| Obs Airmass | 1.25 |
| SMSS ID | 5439861 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.7 ± 0.1 |
| 2MASS Kext | 13.4 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.055 |
| Power law αν | -1.77 ± 0.10 |
| log L5100,AGN | 42.92 ± 0.03 |
| log HβBr/[O III] | -0.28 ± 0.06 |
| log ML5100/M☉ | 7.45 ± 0.10 |
| log MHα/M☉ | 6.44 ± 0.05 |
| log MHβ/M☉ | 7.22 ± 0.11 |
| log M[O III]/M☉ | 7.47 ± 0.10 |
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 | 40.09 ± 0.08 | 257 ± 63 | 278 ± 29 | 7.32 ± 1.15 |
| Hγ Broad | 40.18 ± 0.14 | 1371 ± 195 | 653 ± 146 | 8.40 ± 1.68 |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 39.18 ± 0.30 | 236 ± 62 | 99 ± 25 | 0.92 ± 0.46 |
| He II Broad | 40.68 ± 0.07 | 8049 ± 74 | 3418 ± 30 | 28.82 ± 2.63 |
| Hβ Narrow | 40.60 ± 0.03 | 257 ± 63 | 278 ± 29 | 24.07 ± 0.97 |
| Hβ Broad | 40.62 ± 0.06 | 3210 ± 351 | 1208 ± 51 | 25.20 ± 1.74 |
| [O III] 5007 | 40.89 ± 0.01 | 257 ± 63 | 278 ± 29 | 48.13 ± 0.88 |
| He I Narrow | 39.17 ± 0.25 | 236 ± 62 | 99 ± 25 | 0.93 ± 0.28 |
| He I Broad | 39.93 ± 0.10 | 1180 ± 62 | 501 ± 25 | 5.45 ± 0.66 |
| [O I] 6300 | 39.76 ± 0.05 | 236 ± 62 | 99 ± 25 | 3.70 ± 0.29 |
| Hα Narrow | 41.03 ± 0.01 | 236 ± 62 | 99 ± 25 | 69.96 ± 0.44 |
| Hα Broad | 41.22 ± 0.01 | 1613 ± 80 | 674 ± 25 | 108.15 ± 1.17 |
| [N II] 6585 | 40.80 ± 0.01 | 236 ± 62 | 99 ± 25 | 41.12 ± 0.41 |
| [S II] 6718 | 40.36 ± 0.02 | 236 ± 62 | 99 ± 25 | 14.97 ± 0.32 |
| [S II] 6732 | 40.23 ± 0.02 | 236 ± 62 | 99 ± 25 | 11.05 ± 0.32 |
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 | 10.61 |
|---|---|
| Hβ Broad SNR | 1.94 |
| Hγ Broad SNR | 1.61 |
| AGN frac | 0.57 |
| Host frac | 0.43 |
| log L5100,Host | 42.80 |
| Fe II/Hβ | 0.71 |
| Fe II/[O III] | 0.37 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.