2MASS J20104992-3109307
Observation
| Spectrum ID | 234731593_sp1 |
|---|---|
| Alt name | g2010499-310931 |
| z | 0.0853 |
| RA, Dec | 302.7081, -31.1586 |
| MJD | 59732.72 |
| SNR/Å B/R | 12.2/20.8 |
| Obs Airmass | 1.00 |
| SMSS ID | 234731593 |
| Closest SMSS | 10.74'', 1274887223 |
| SMSS Mean r6"ap | 17.2 ± 0.1 |
| 2MASS Kext | 13.1 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.117 |
| Power law αν | -0.47 ± 0.20 |
| log L5100,AGN | 43.51 ± 0.03 |
| log HβBr/[O III] | 0.48 ± 0.03 |
| log ML5100/M☉ | 8.29 ± 0.07 |
| log MHα/M☉ | 7.59 ± 0.02 |
| log MHβ/M☉ | 8.29 ± 0.07 |
| log M[O III]/M☉ | 8.21 ± 0.07 |
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 | 39.96 ± 0.26 | 300 ± 63 | 174 ± 27 | 1.13 ± 0.45 |
| Hγ Broad | 41.13 ± 0.07 | 3521 ± 458 | 1387 ± 84 | 15.72 ± 1.36 |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 40.05 ± 0.13 | 219 ± 63 | 91 ± 25 | 1.54 ± 0.31 |
| He II Broad | 41.29 ± 0.08 | 12204 ± 194 | 5183 ± 82 | 26.63 ± 2.42 |
| Hβ Narrow | 40.51 ± 0.07 | 300 ± 63 | 174 ± 27 | 4.67 ± 0.50 |
| Hβ Broad | 41.70 ± 0.03 | 6242 ± 451 | 2842 ± 163 | 73.77 ± 2.48 |
| [O III] 5007 | 41.22 ± 0.02 | 300 ± 63 | 174 ± 27 | 25.02 ± 0.56 |
| He I Narrow | — | — | — | — |
| He I Broad | 41.01 ± 0.05 | 5139 ± 195 | 2182 ± 82 | 19.75 ± 1.23 |
| [O I] 6300 | 39.89 ± 0.11 | 219 ± 63 | 91 ± 25 | 1.68 ± 0.27 |
| Hα Narrow | 40.99 ± 0.01 | 219 ± 63 | 91 ± 25 | 22.69 ± 0.33 |
| Hα Broad | 42.08 ± 0.01 | 3299 ± 79 | 1447 ± 32 | 275.19 ± 1.65 |
| [N II] 6585 | 40.79 ± 0.02 | 219 ± 63 | 91 ± 25 | 14.41 ± 0.33 |
| [S II] 6718 | 40.32 ± 0.05 | 219 ± 63 | 91 ± 25 | 5.03 ± 0.39 |
| [S II] 6732 | 40.25 ± 0.06 | 219 ± 63 | 91 ± 25 | 4.25 ± 0.38 |
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 | 12.24 |
|---|---|
| Hβ Broad SNR | 3.62 |
| Hγ Broad SNR | 2.12 |
| AGN frac | 0.53 |
| Host frac | 0.47 |
| log L5100,Host | 43.46 |
| Fe II/Hβ | 0.40 |
| Fe II/[O III] | 1.23 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
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.