2MASS J12570643-4435201
Observation
| Spectrum ID | 319052134_sp2 |
|---|---|
| Alt name | g1257064-443520 |
| z | 0.0965 |
| RA, Dec | 194.2768, -44.5889 |
| MJD | 60797.45 |
| SNR/Å B/R | 13.2/21.3 |
| Obs Airmass | 1.08 |
| SMSS ID | 319052134 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.0 ± 0.0 |
| 2MASS Kext | 12.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.075 |
| Power law αν | 0.48 ± 0.02 |
| log L5100,AGN | 44.09 ± 0.01 |
| log HβBr/[O III] | -0.29 ± 0.58 |
| log ML5100/M☉ | 7.08 ± 0.02 |
| log MHα/M☉ | 7.15 ± 0.04 |
| log MHβ/M☉ | 6.60 ± 0.27 |
| log M[O III]/M☉ | 6.88 ± 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 | 41.06 ± 0.12 | 421 ± 64 | 470 ± 29 | 3.18 ± 0.46 |
| Hγ Broad | 40.91 ± 0.21 | 1272 ± 98 | 499 ± 41 | 1.85 ± 0.45 |
| [O III] 4364 | 40.13 ± 0.34 | 345 ± 62 | 146 ± 25 | 0.38 ± 0.22 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 41.68 ± 0.03 | 421 ± 64 | 471 ± 29 | 17.65 ± 0.57 |
| Hβ Broad | 41.17 +1.06−0.09 | 1179 ± 25 | 422 ± 25 | 5.52 ± 0.53 |
| [O III] 5007 | 41.47 ± 0.04 | 421 ± 64 | 471 ± 29 | 11.69 ± 0.63 |
| He I Narrow | 40.53 ± 0.06 | 345 ± 62 | 146 ± 25 | 2.02 ± 0.16 |
| He I Broad | 40.96 ± 0.08 | 3266 ± 69 | 1387 ± 28 | 5.39 ± 0.49 |
| [O I] 6300 | 40.28 ± 0.10 | 345 ± 62 | 146 ± 25 | 1.35 ± 0.20 |
| Hα Narrow | 41.99 ± 0.01 | 345 ± 62 | 146 ± 25 | 75.50 ± 0.33 |
| Hα Broad | 42.33 ± 0.01 | 1661 ± 64 | 808 ± 25 | 168.44 ± 1.01 |
| [N II] 6585 | 41.45 ± 0.01 | 345 ± 62 | 146 ± 25 | 22.35 ± 0.27 |
| [S II] 6718 | 41.07 ± 0.02 | 345 ± 62 | 146 ± 25 | 9.72 ± 0.26 |
| [S II] 6732 | 40.93 ± 0.02 | 345 ± 62 | 146 ± 25 | 7.09 ± 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 | 18.37 |
|---|---|
| Hβ Broad SNR | 2.83 |
| Hγ Broad SNR | 1.58 |
| AGN frac | 0.89 |
| Host frac | 0.11 |
| log L5100,Host | 43.19 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 1 |
hb_width | 0 |
balmer_width | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.