2MASS J15080462-4244448
Observation
| Spectrum ID | 310181797_sp2 |
|---|---|
| Alt name | g1508046-424445 |
| z | 0.0562 |
| RA, Dec | 227.0190, -42.7458 |
| MJD | 59671.64 |
| SNR/Å B/R | 11.9/22.3 |
| Obs Airmass | 1.05 |
| 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 | -0.94 ± 0.18 |
| log L5100,AGN | 43.35 ± 0.03 |
| log HβBr/[O III] | 0.12 ± 0.02 |
| log ML5100/M☉ | 7.82 ± 0.05 |
| log MHα/M☉ | 7.15 ± 0.04 |
| log MHβ/M☉ | 7.78 ± 0.06 |
| log M[O III]/M☉ | 7.87 ± 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 | 39.96 ± 0.20 | 355 ± 63 | 303 ± 38 | 1.75 ± 0.65 |
| Hγ Broad | 41.01 ± 0.05 | 3823 ± 403 | 1333 ± 79 | 20.08 ± 1.19 |
| [O III] 4364 | 39.35 ± 0.40 | 337 ± 63 | 143 ± 25 | 0.43 ± 0.34 |
| He II Narrow | 39.76 ± 0.18 | 337 ± 63 | 143 ± 25 | 1.18 ± 0.34 |
| He II Broad | 40.99 ± 0.07 | 10283 ± 289 | 4367 ± 122 | 20.18 ± 1.89 |
| Hβ Narrow | 40.53 ± 0.05 | 355 ± 63 | 303 ± 38 | 7.44 ± 0.64 |
| Hβ Broad | 41.45 ± 0.02 | 3979 ± 219 | 1838 ± 87 | 60.22 ± 1.53 |
| [O III] 5007 | 41.32 ± 0.01 | 355 ± 63 | 303 ± 38 | 47.52 ± 0.72 |
| He I Narrow | 39.73 ± 0.12 | 337 ± 63 | 143 ± 25 | 1.40 ± 0.25 |
| He I Broad | 40.67 ± 0.06 | 4416 ± 282 | 1875 ± 119 | 12.35 ± 0.93 |
| [O I] 6300 | 39.88 ± 0.08 | 337 ± 63 | 143 ± 25 | 2.14 ± 0.26 |
| Hα Narrow | 40.99 ± 0.01 | 337 ± 63 | 143 ± 25 | 29.22 ± 0.37 |
| Hα Broad | 41.94 ± 0.01 | 2189 ± 94 | 1434 ± 27 | 258.77 ± 1.23 |
| [N II] 6585 | 40.88 ± 0.01 | 337 ± 63 | 143 ± 25 | 22.46 ± 0.35 |
| [S II] 6718 | 40.37 ± 0.03 | 337 ± 63 | 143 ± 25 | 7.12 ± 0.31 |
| [S II] 6732 | 40.29 ± 0.03 | 337 ± 63 | 143 ± 25 | 5.94 ± 0.30 |
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 | 18.05 |
|---|---|
| Hβ Broad SNR | 5.11 |
| Hγ Broad SNR | 2.64 |
| AGN frac | 0.58 |
| Host frac | 0.42 |
| log L5100,Host | 43.22 |
| Fe II/Hβ | 0.36 |
| Fe II/[O III] | 0.47 |
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.