2MASS J15080462-4244448
Observation
| Spectrum ID | 310181797_sp3 |
|---|---|
| Alt name | g1508046-424445 |
| z | 0.0562 |
| RA, Dec | 227.0190, -42.7458 |
| MJD | 59726.6 |
| SNR/Å B/R | 13.9/27.7 |
| Obs Airmass | 1.07 |
| SMSS ID | 310181797 |
| Closest SMSS | 5.01'', 2460485054 |
| SMSS Mean r6"ap | 16.4 ± 0.1 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.106 |
| Power law αν | -0.66 ± 0.17 |
| log L5100,AGN | 43.32 ± 0.03 |
| log HβBr/[O III] | 0.27 ± 0.01 |
| log ML5100/M☉ | 7.91 ± 0.05 |
| log MHα/M☉ | 7.55 ± 0.02 |
| log MHβ/M☉ | 7.96 ± 0.05 |
| log M[O III]/M☉ | 7.99 ± 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 | 40.24 ± 0.11 | 357 ± 63 | 357 ± 27 | 3.41 ± 0.67 |
| Hγ Broad | 41.14 ± 0.04 | 3822 ± 385 | 1520 ± 59 | 26.74 ± 1.25 |
| [O III] 4364 | 39.83 ± 0.18 | 334 ± 63 | 141 ± 25 | 1.33 ± 0.33 |
| He II Narrow | 39.76 ± 0.17 | 334 ± 63 | 141 ± 25 | 1.25 ± 0.32 |
| He II Broad | 40.99 ± 0.07 | 12538 ± 133 | 5324 ± 56 | 21.19 ± 1.97 |
| Hβ Narrow | 40.51 ± 0.05 | 357 ± 63 | 357 ± 27 | 7.38 ± 0.67 |
| Hβ Broad | 41.63 ± 0.01 | 4464 ± 230 | 1958 ± 40 | 97.46 ± 1.43 |
| [O III] 5007 | 41.36 ± 0.01 | 357 ± 63 | 357 ± 27 | 54.70 ± 0.70 |
| He I Narrow | 38.99 ± 0.39 | 334 ± 63 | 141 ± 25 | 0.29 ± 0.20 |
| He I Broad | 40.93 ± 0.02 | 4148 ± 85 | 1761 ± 35 | 25.17 ± 0.78 |
| [O I] 6300 | 39.76 ± 0.08 | 334 ± 63 | 141 ± 25 | 1.86 ± 0.22 |
| Hα Narrow | 40.95 ± 0.01 | 334 ± 63 | 141 ± 25 | 30.32 ± 0.34 |
| Hα Broad | 42.02 ± 0.01 | 3304 ± 67 | 1525 ± 26 | 355.67 ± 1.36 |
| [N II] 6585 | 40.67 ± 0.02 | 334 ± 63 | 141 ± 25 | 15.98 ± 0.31 |
| [S II] 6718 | 40.27 ± 0.03 | 334 ± 63 | 141 ± 25 | 6.61 ± 0.26 |
| [S II] 6732 | 40.18 ± 0.03 | 334 ± 63 | 141 ± 25 | 5.40 ± 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 | 19.66 |
|---|---|
| Hβ Broad SNR | 8.35 |
| Hγ Broad SNR | 3.87 |
| AGN frac | 0.54 |
| Host frac | 0.46 |
| log L5100,Host | 43.24 |
| Fe II/Hβ | 0.39 |
| Fe II/[O III] | 0.71 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.