2MASS J23570566-0813532
Observation
| Spectrum ID | 8269479_sp1 |
|---|---|
| Alt name | g2357057-081352 |
| z | 0.0880 |
| RA, Dec | 359.2735, -8.2313 |
| MJD | 60179.61 |
| SNR/Å B/R | 14.2/18.8 |
| Obs Airmass | 1.14 |
| SMSS ID | 8269479 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | nan ± nan |
| 2MASS Kext | 13.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.037 |
| Power law αν | -1.09 ± 0.04 |
| log L5100,AGN | 43.67 ± 0.01 |
| log HβBr/[O III] | -0.87 ± 0.43 |
| log ML5100/M☉ | 7.85 ± 0.02 |
| log MHα/M☉ | 7.09 ± 0.04 |
| log MHβ/M☉ | 7.36 ± 0.21 |
| log M[O III]/M☉ | 7.91 ± 0.02 |
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 | 40.23 ± 0.13 | 328 ± 63 | 256 ± 27 | 1.59 ± 0.36 |
| Hγ Broad | 40.41 ± 0.14 | 1306 ± 117 | 453 ± 34 | 2.19 ± 0.41 |
| [O III] 4364 | 39.89 ± 0.18 | 310 ± 63 | 130 ± 25 | 0.74 ± 0.19 |
| He II Narrow | 39.84 ± 0.22 | 310 ± 63 | 130 ± 25 | 0.70 ± 0.18 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.62 ± 0.04 | 328 ± 63 | 256 ± 27 | 4.38 ± 0.37 |
| Hβ Broad | 40.76 +0.76−0.09 | 3503 ± 67 | 1284 ± 31 | 6.10 ± 0.67 |
| [O III] 5007 | 41.63 ± 0.01 | 328 ± 63 | 256 ± 27 | 46.04 ± 0.44 |
| He I Narrow | 39.55 ± 0.32 | 310 ± 63 | 130 ± 25 | 0.44 ± 0.19 |
| He I Broad | 40.09 ± 0.18 | 1179 ± 63 | 501 ± 25 | 1.54 ± 0.33 |
| [O I] 6300 | 40.42 ± 0.03 | 310 ± 63 | 130 ± 25 | 3.45 ± 0.18 |
| Hα Narrow | 41.08 ± 0.01 | 310 ± 63 | 130 ± 25 | 16.60 ± 0.22 |
| Hα Broad | 41.75 ± 0.01 | 2346 ± 98 | 1330 ± 30 | 76.88 ± 0.85 |
| [N II] 6585 | 40.70 ± 0.02 | 310 ± 63 | 130 ± 25 | 6.89 ± 0.19 |
| [S II] 6718 | 40.68 ± 0.02 | 310 ± 63 | 130 ± 25 | 6.75 ± 0.26 |
| [S II] 6732 | 40.58 ± 0.03 | 310 ± 63 | 130 ± 25 | 5.42 ± 0.26 |
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 | 9.11 |
|---|---|
| Hβ Broad SNR | 1.09 |
| Hγ Broad SNR | 1.43 |
| AGN frac | 0.86 |
| Host frac | 0.14 |
| log L5100,Host | 42.87 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
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.