[SSR2017] SDSS J2356-1016 Gal 1
Observation
| Spectrum ID | 8235915_sp1 |
|---|---|
| Alt name | g2356543-101605 |
| z | 0.0737 |
| RA, Dec | 359.2265, -10.2683 |
| MJD | 60179.6 |
| SNR/Å B/R | 12.1/17.5 |
| Obs Airmass | 1.16 |
| SMSS ID | 8235915 |
| Closest SMSS | 7.76'', 8235923 |
| SMSS Mean r6"ap | 16.1 ± 0.1 |
| 2MASS Kext | 12.2 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.027 |
| Power law αν | -0.28 ± 0.14 |
| log L5100,AGN | 43.70 ± 0.02 |
| log HβBr/[O III] | -0.46 ± 0.23 |
| log ML5100/M☉ | 7.96 ± 0.03 |
| log MHα/M☉ | 7.80 ± 0.02 |
| log MHβ/M☉ | 7.85 ± 0.12 |
| log M[O III]/M☉ | 8.24 ± 0.03 |
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 | 40.84 ± 0.05 | 415 ± 62 | 196 ± 25 | 5.43 ± 0.36 |
| Hγ Broad | 41.31 ± 0.05 | 3389 ± 464 | 1148 ± 65 | 15.60 ± 0.77 |
| [O III] 4364 | 40.35 ± 0.17 | 408 ± 63 | 172 ± 25 | 1.76 ± 0.35 |
| He II Narrow | 40.52 ± 0.07 | 408 ± 63 | 172 ± 25 | 2.95 ± 0.29 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 41.24 ± 0.02 | 415 ± 62 | 196 ± 25 | 16.44 ± 0.43 |
| Hβ Broad | 41.64 +0.44−0.03 | 3912 ± 118 | 1459 ± 48 | 40.81 ± 1.05 |
| [O III] 5007 | 42.10 ± 0.01 | 415 ± 62 | 196 ± 25 | 125.43 ± 0.55 |
| He I Narrow | 40.31 ± 0.08 | 408 ± 63 | 172 ± 25 | 2.66 ± 0.33 |
| He I Broad | 41.16 ± 0.05 | 5814 ± 189 | 2469 ± 80 | 19.07 ± 1.09 |
| [O I] 6300 | 40.52 ± 0.04 | 408 ± 63 | 172 ± 25 | 4.90 ± 0.30 |
| Hα Narrow | 41.82 ± 0.01 | 408 ± 63 | 172 ± 25 | 105.83 ± 0.56 |
| Hα Broad | 42.38 ± 0.01 | 3400 ± 71 | 1584 ± 49 | 382.76 ± 2.00 |
| [N II] 6585 | 41.38 ± 0.01 | 408 ± 63 | 172 ± 25 | 38.25 ± 0.52 |
| [S II] 6718 | 41.04 ± 0.01 | 408 ± 63 | 172 ± 25 | 18.19 ± 0.40 |
| [S II] 6732 | 40.97 ± 0.02 | 408 ± 63 | 172 ± 25 | 15.28 ± 0.45 |
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 | 19.10 |
|---|---|
| Hβ Broad SNR | 4.63 |
| Hγ Broad SNR | 3.31 |
| AGN frac | 0.73 |
| Host frac | 0.27 |
| log L5100,Host | 43.26 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
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.