2MASS J15540695-3625558
Observation
| Spectrum ID | 116599710_sp1 |
|---|---|
| Alt name | g1554069-362556 |
| z | 0.0933 |
| RA, Dec | 238.5289, -36.4322 |
| MJD | 60080.59 |
| SNR/Å B/R | 5.7/6.7 |
| Obs Airmass | 1.01 |
| SMSS ID | 116599710 |
| Closest SMSS | 7.69'', 116599709 |
| SMSS Mean r6"ap | 17.9 ± 0.1 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.346 |
| Power law αν | -0.98 ± 0.38 |
| log L5100,AGN | 43.67 ± 0.04 |
| log HβBr/[O III] | 0.04 ± 0.28 |
| log ML5100/M☉ | 7.63 ± 0.03 |
| log MHα/M☉ | 7.47 ± 0.03 |
| log MHβ/M☉ | 7.44 ± 0.14 |
| log M[O III]/M☉ | 7.56 ± 0.02 |
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 | 40.42 ± 0.17 | 260 ± 63 | 158 ± 29 | 2.42 ± 0.65 |
| Hγ Broad | 41.20 ± 0.09 | 2311 ± 316 | 934 ± 144 | 14.50 ± 1.79 |
| [O III] 4364 | 40.03 ± 0.28 | 231 ± 63 | 95 ± 25 | 1.01 ± 0.45 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.96 ± 0.06 | 260 ± 63 | 158 ± 29 | 9.57 ± 0.76 |
| Hβ Broad | 41.42 +0.51−0.06 | 2705 ± 50 | 1002 ± 27 | 27.88 ± 1.77 |
| [O III] 5007 | 41.38 ± 0.02 | 260 ± 63 | 158 ± 29 | 26.03 ± 0.85 |
| He I Narrow | 39.99 ± 0.29 | 231 ± 63 | 95 ± 25 | 1.24 ± 0.51 |
| He I Broad | 40.80 ± 0.14 | 1585 ± 146 | 673 ± 61 | 7.88 ± 1.51 |
| [O I] 6300 | 40.36 ± 0.14 | 231 ± 63 | 95 ± 25 | 3.07 ± 0.63 |
| Hα Narrow | 41.45 ± 0.02 | 231 ± 63 | 95 ± 25 | 39.92 ± 0.77 |
| Hα Broad | 42.35 ± 0.01 | 2383 ± 74 | 1357 ± 51 | 318.23 ± 4.81 |
| [N II] 6585 | 41.04 ± 0.03 | 231 ± 63 | 95 ± 25 | 15.45 ± 0.72 |
| [S II] 6718 | 40.92 ± 0.06 | 231 ± 63 | 95 ± 25 | 11.94 ± 0.93 |
| [S II] 6732 | 40.63 ± 0.10 | 231 ± 63 | 95 ± 25 | 6.24 ± 0.78 |
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 | 11.47 |
|---|---|
| Hβ Broad SNR | 2.04 |
| Hγ Broad SNR | 1.53 |
| AGN frac | 0.74 |
| Host frac | 0.26 |
| log L5100,Host | 43.21 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 1 |
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.