NGC 4593
Observation
| Spectrum ID | 106851531_sp1 |
|---|---|
| Alt name | NGC4593 |
| z | 0.0083 |
| RA, Dec | 189.9142, -5.3442 |
| MJD | 60755.61 |
| SNR/Å B/R | 18.4/34.5 |
| Obs Airmass | 1.11 |
| SMSS ID | 106851531 |
| Closest SMSS | 7.66'', 2173547842 |
| SMSS Mean r6"ap | 13.9 ± 0.2 |
| 2MASS Kext | 8.0 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | S7 |
| MW E(B−V) | 0.021 |
| Power law αν | -0.34 ± 0.12 |
| log L5100,AGN | 42.50 ± 0.02 |
| log HβBr/[O III] | 0.19 ± 0.18 |
| log ML5100/M☉ | 7.43 ± 0.03 |
| log MHα/M☉ | 6.98 ± 0.04 |
| log MHβ/M☉ | 7.36 ± 0.11 |
| log M[O III]/M☉ | 7.38 ± 0.05 |
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 | 39.05 ± 0.16 | 296 ± 63 | 190 ± 25 | 1.39 ± 0.34 |
| Hγ Broad | 40.18 ± 0.04 | 3811 ± 153 | 1295 ± 29 | 18.95 ± 0.74 |
| [O III] 4364 | 38.58 ± 0.34 | 271 ± 63 | 114 ± 25 | 0.48 ± 0.24 |
| He II Narrow | 38.64 ± 0.26 | 271 ± 63 | 114 ± 25 | 0.62 ± 0.20 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.49 ± 0.04 | 296 ± 63 | 190 ± 25 | 4.64 ± 0.30 |
| Hβ Broad | 40.56 +0.34−0.02 | 3865 ± 38 | 1438 ± 25 | 54.94 ± 0.85 |
| [O III] 5007 | 40.37 ± 0.01 | 296 ± 63 | 190 ± 25 | 37.03 ± 0.33 |
| He I Narrow | 38.88 ± 0.08 | 271 ± 63 | 114 ± 25 | 1.56 ± 0.17 |
| He I Broad | 40.09 ± 0.03 | 6050 ± 72 | 2569 ± 29 | 25.63 ± 0.87 |
| [O I] 6300 | 38.81 ± 0.08 | 271 ± 63 | 114 ± 25 | 1.49 ± 0.17 |
| Hα Narrow | 39.88 ± 0.01 | 271 ± 63 | 114 ± 25 | 18.62 ± 0.24 |
| Hα Broad | 41.18 ± 0.01 | 3078 ± 64 | 1372 ± 25 | 379.42 ± 1.15 |
| [N II] 6585 | 39.92 ± 0.01 | 271 ± 63 | 114 ± 25 | 20.54 ± 0.23 |
| [S II] 6718 | 39.36 ± 0.02 | 271 ± 63 | 114 ± 25 | 5.88 ± 0.19 |
| [S II] 6732 | 39.29 ± 0.03 | 271 ± 63 | 114 ± 25 | 5.09 ± 0.20 |
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 | 26.14 |
|---|---|
| Hβ Broad SNR | 7.52 |
| Hγ Broad SNR | 4.38 |
| AGN frac | 0.54 |
| Host frac | 0.46 |
| log L5100,Host | 42.43 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.