LEDA 3096712
Observation
| Spectrum ID | 1762405_sp1 |
|---|---|
| Alt name | g2257390-365607 |
| z | 0.0387 |
| RA, Dec | 344.4126, -36.9352 |
| MJD | 59904.46 |
| SNR/Å B/R | 15.3/28.0 |
| Obs Airmass | 1.12 |
| SMSS ID | 1762405 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | nan ± nan |
| 2MASS Kext | 11.8 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.014 |
| Power law αν | -0.80 ± 0.08 |
| log L5100,AGN | 43.42 ± 0.02 |
| log HβBr/[O III] | 0.43 ± 0.01 |
| log ML5100/M☉ | 7.08 ± 0.03 |
| log MHα/M☉ | 7.04 ± 0.03 |
| log MHβ/M☉ | 7.05 ± 0.03 |
| log M[O III]/M☉ | 6.99 ± 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 | 39.89 ± 0.32 | 412 ± 68 | 351 ± 27 | 1.23 ± 0.39 |
| Hγ Broad | 40.96 ± 0.04 | 1354 ± 106 | 576 ± 60 | 14.32 ± 0.63 |
| [O III] 4364 | 39.35 ± 0.34 | 266 ± 63 | 112 ± 25 | 0.36 ± 0.20 |
| He II Narrow | 39.28 ± 0.36 | 266 ± 63 | 112 ± 25 | 0.33 ± 0.18 |
| He II Broad | 40.38 ± 0.09 | 1470 ± 129 | 624 ± 54 | 4.02 ± 0.45 |
| Hβ Narrow | 40.41 ± 0.09 | 412 ± 68 | 351 ± 27 | 4.65 ± 0.36 |
| Hβ Broad | 41.53 ± 0.01 | 1635 ± 39 | 714 ± 30 | 62.24 ± 0.68 |
| [O III] 5007 | 41.11 ± 0.01 | 412 ± 68 | 351 ± 27 | 24.04 ± 0.37 |
| He I Narrow | 39.01 ± 0.34 | 266 ± 63 | 112 ± 25 | 0.23 ± 0.12 |
| He I Broad | 40.59 ± 0.03 | 2020 ± 111 | 858 ± 46 | 8.81 ± 0.35 |
| [O I] 6300 | 39.63 ± 0.08 | 266 ± 63 | 112 ± 25 | 1.06 ± 0.14 |
| Hα Narrow | 40.68 ± 0.02 | 266 ± 63 | 112 ± 25 | 12.46 ± 0.21 |
| Hα Broad | 42.13 ± 0.01 | 1686 ± 63 | 697 ± 25 | 349.76 ± 0.61 |
| [N II] 6585 | 40.67 ± 0.02 | 266 ± 63 | 112 ± 25 | 12.26 ± 0.20 |
| [S II] 6718 | 40.26 ± 0.02 | 266 ± 63 | 112 ± 25 | 4.90 ± 0.15 |
| [S II] 6732 | 40.12 ± 0.03 | 266 ± 63 | 112 ± 25 | 3.53 ± 0.15 |
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 | 60.90 |
|---|---|
| Hβ Broad SNR | 21.12 |
| Hγ Broad SNR | 7.59 |
| AGN frac | 0.74 |
| Host frac | 0.26 |
| log L5100,Host | 42.96 |
| Fe II/Hβ | 0.96 |
| Fe II/[O III] | 2.56 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.