IC 1494
Observation
| Spectrum ID | 7879624_sp1 |
|---|---|
| Alt name | g2330462-124328 |
| z | 0.0317 |
| RA, Dec | 352.6923, -12.7245 |
| MJD | 60179.61 |
| SNR/Å B/R | 17.2/34.8 |
| Obs Airmass | 1.08 |
| SMSS ID | 7879624 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.4 ± 0.0 |
| 2MASS Kext | 11.6 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.025 |
| Power law αν | -1.88 ± 0.10 |
| log L5100,AGN | 40.75 ± 0.66 |
| log HβBr/[O III] | <-0.09 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.95 ± 0.12 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | 39.31 ± 0.26 | 362 ± 63 | 405 ± 33 | 186.63 ± 96.91 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | — | — | — | — |
| He II Broad | 39.66 ± 0.21 | 1606 ± 62 | 682 ± 25 | 413.07 ± 102.94 |
| Hβ Narrow | 39.73 ± 0.10 | 362 ± 63 | 405 ± 33 | 486.24 ± 81.27 |
| Hβ Broad | <40.12 | — | — | — |
| [O III] 5007 | 40.21 ± 0.04 | 362 ± 63 | 405 ± 33 | 1485.51 ± 83.22 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | 39.54 ± 0.08 | 326 ± 62 | 138 ± 25 | 325.19 ± 29.84 |
| Hα Narrow | 39.95 ± 0.03 | 326 ± 62 | 138 ± 25 | 836.82 ± 31.11 |
| Hα Broad | 40.71 ± 0.03 | 4123 ± 499 | 1817 ± 39 | 4853.07 ± 129.13 |
| [N II] 6585 | 40.10 ± 0.02 | 326 ± 62 | 138 ± 25 | 1192.15 ± 31.50 |
| [S II] 6718 | 39.82 ± 0.04 | 326 ± 62 | 138 ± 25 | 627.53 ± 32.50 |
| [S II] 6732 | 39.75 ± 0.04 | 326 ± 62 | 138 ± 25 | 528.14 ± 32.64 |
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 | 2.22 |
|---|---|
| Hβ Broad SNR | 0.92 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.00 |
| Host frac | 1.00 |
| log L5100,Host | 43.26 |
| Fe II/Hβ | — |
| Fe II/[O III] | 2.39 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
balmer_width | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.