1RXS J025930.7-242249
Observation
| Spectrum ID | 11327597_sp1 |
|---|---|
| Alt name | g0259305-242254 |
| z | 0.0354 |
| RA, Dec | 44.8771, -24.3816 |
| MJD | 60223.63 |
| SNR/Å B/R | 18.8/35.0 |
| Obs Airmass | 1.03 |
| SMSS ID | 11327597 |
| Closest SMSS | 10.20'', 11327590 |
| SMSS Mean r6"ap | 15.9 ± 0.0 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.020 |
| Power law αν | -1.73 ± 0.04 |
| log L5100,AGN | 42.78 ± 0.01 |
| log HβBr/[O III] | -0.07 ± 0.03 |
| log ML5100/M☉ | 7.81 ± 0.05 |
| log MHα/M☉ | 6.93 ± 0.04 |
| log MHβ/M☉ | 7.69 ± 0.07 |
| log M[O III]/M☉ | 7.84 ± 0.06 |
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 | 39.61 ± 0.08 | 232 ± 63 | 142 ± 25 | 3.29 ± 0.44 |
| Hγ Broad | 39.77 ± 0.13 | 1378 ± 278 | 577 ± 75 | 4.43 ± 0.79 |
| [O III] 4364 | 39.38 ± 0.10 | 210 ± 62 | 87 ± 25 | 1.92 ± 0.28 |
| He II Narrow | 38.83 ± 0.29 | 210 ± 62 | 87 ± 25 | 0.56 ± 0.26 |
| He II Broad | 40.49 ± 0.05 | 7746 ± 118 | 3289 ± 49 | 25.76 ± 1.61 |
| Hβ Narrow | 39.99 ± 0.03 | 232 ± 63 | 142 ± 25 | 8.12 ± 0.37 |
| Hβ Broad | 40.73 ± 0.02 | 5156 ± 275 | 1970 ± 61 | 44.19 ± 1.33 |
| [O III] 5007 | 40.80 ± 0.01 | 232 ± 63 | 142 ± 25 | 53.00 ± 0.42 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.99 ± 0.07 | 4284 ± 147 | 1819 ± 62 | 8.59 ± 0.79 |
| [O I] 6300 | 39.29 ± 0.06 | 210 ± 62 | 87 ± 25 | 1.73 ± 0.16 |
| Hα Narrow | 40.49 ± 0.01 | 210 ± 62 | 87 ± 25 | 27.57 ± 0.21 |
| Hα Broad | 41.15 ± 0.01 | 2954 ± 90 | 1430 ± 27 | 128.47 ± 0.89 |
| [N II] 6585 | 40.38 ± 0.01 | 210 ± 62 | 87 ± 25 | 21.52 ± 0.20 |
| [S II] 6718 | 39.87 ± 0.02 | 210 ± 62 | 87 ± 25 | 6.65 ± 0.19 |
| [S II] 6732 | 39.83 ± 0.02 | 210 ± 62 | 87 ± 25 | 6.14 ± 0.19 |
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 | 10.22 |
|---|---|
| Hβ Broad SNR | 3.47 |
| Hγ Broad SNR | 1.41 |
| AGN frac | 0.40 |
| Host frac | 0.60 |
| log L5100,Host | 42.96 |
| Fe II/Hβ | 0.69 |
| Fe II/[O III] | 0.58 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 0 |
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.