MCG-02-58-022
Observation
| Spectrum ID | 7922026_sp1 |
|---|---|
| Alt name | MCG -2-58-022 |
| z | 0.0471 |
| RA, Dec | 346.1812, -8.6857 |
| MJD | 60931.56 |
| SNR/Å B/R | 7.0/12.3 |
| Obs Airmass | 1.08 |
| SMSS ID | 7922026 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | nan ± nan |
| 2MASS Kext | 10.6 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | bad_fit |
| AGN reference | PGC |
| MW E(B−V) | 0.035 |
| Power law αν | 0.46 ± 0.04 |
| log L5100,AGN | 43.77 ± 0.01 |
| log HβBr/[O III] | -0.59 ± 0.06 |
| log ML5100/M☉ | 7.91 ± 0.18 |
| log MHα/M☉ | 8.21 ± 0.27 |
| log MHβ/M☉ | 7.72 ± 0.18 |
| log M[O III]/M☉ | 8.16 ± 0.18 |
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 | 40.59 ± 0.23 | 522 ± 64 | 235 ± 45 | 2.11 ± 0.52 |
| Hγ Broad | 40.88 ± 0.19 | 1408 ± 183 | 518 ± 65 | 3.60 ± 0.86 |
| [O III] 4364 | 40.58 ± 0.16 | 479 ± 66 | 203 ± 26 | 2.23 ± 0.47 |
| He II Narrow | 40.39 ± 0.29 | 479 ± 66 | 203 ± 26 | 1.74 ± 0.47 |
| He II Broad | 40.66 ± 0.24 | 1188 ± 63 | 504 ± 25 | 3.15 ± 0.76 |
| Hβ Narrow | 41.12 ± 0.09 | 522 ± 64 | 235 ± 45 | 9.53 ± 0.60 |
| Hβ Broad | 41.50 ± 0.06 | 3578 ± 699 | 1229 ± 97 | 23.76 ± 1.09 |
| [O III] 5007 | 42.10 ± 0.02 | 522 ± 64 | 235 ± 45 | 99.32 ± 0.77 |
| He I Narrow | 39.65 ± 0.44 | 479 ± 66 | 203 ± 26 | 0.55 ± 0.43 |
| He I Broad | 39.84 ± 0.44 | 1198 ± 77 | 509 ± 31 | 0.81 ± 0.70 |
| [O I] 6300 | 41.04 ± 0.03 | 479 ± 66 | 203 ± 26 | 16.11 ± 0.58 |
| Hα Narrow | 41.57 ± 0.03 | 479 ± 66 | 203 ± 26 | 60.48 ± 1.03 |
| Hα Broad | 42.37 ± 0.01 | 5481 ± 1473 | 2464 ± 39 | 376.31 ± 2.48 |
| [N II] 6585 | 41.51 ± 0.03 | 479 ± 66 | 203 ± 26 | 52.03 ± 1.01 |
| [S II] 6718 | 41.33 ± 0.02 | 479 ± 66 | 203 ± 26 | 36.15 ± 0.80 |
| [S II] 6732 | 41.30 ± 0.02 | 479 ± 66 | 203 ± 26 | 34.48 ± 0.80 |
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 | 7.29 |
|---|---|
| Hβ Broad SNR | 2.47 |
| Hγ Broad SNR | 1.39 |
| AGN frac | 0.77 |
| Host frac | 0.23 |
| log L5100,Host | 43.25 |
| Fe II/Hβ | 0.68 |
| Fe II/[O III] | 0.18 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.