LEDA 827551

Observation

Spectrum ID	17832134_sp1
Alt name	g0321104-212929
z	0.0722
RA, Dec	50.2932, -21.4914
MJD	60258.52
SNR/Å B/R	11.9/21.7
Obs Airmass	1.09
SMSS ID	17832134
Closest SMSS	None (< 15")
SMSS Mean r_6"ap	16.9 ± 0.1
2MASS K_ext	12.5 ± 0.1

AGN Properties

Spectrum Type	Sy 1.5+
Quality Flag	good
AGN reference	6dFGS
MW E(B−V)	0.021
Power law α_ν	-0.33 ± 0.15
log L_5100,AGN	42.94 ± 0.03
log Hβ_Br/[O III]	<-0.29
log M_L5100/M_☉	—
log M_Hα/M_☉	7.00 ± 0.05
log M_Hβ/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	—	—	—	—
Hγ Broad	—	—	—	—
[O III] 4364	—	—	—	—
He II Narrow	39.20 ± 0.44	252 ± 62	106 ± 25	0.80 ± 0.60
He II Broad	—	—	—	—
Hβ Narrow	39.70 ± 0.21	257 ± 63	311 ± 45	2.66 ± 1.47
Hβ Broad	<40.57	—	—	—
[O III] 5007	40.86 ± 0.03	257 ± 63	311 ± 45	41.16 ± 1.72
He I Narrow	—	—	—	—
He I Broad	—	—	—	—
[O I] 6300	39.46 ± 0.18	252 ± 62	106 ± 25	2.40 ± 0.58
Hα Narrow	40.45 ± 0.02	252 ± 62	106 ± 25	24.86 ± 0.69
Hα Broad	41.23 ± 0.02	3036 ± 144	1357 ± 37	151.60 ± 3.54
[N II] 6585	40.57 ± 0.02	252 ± 62	106 ± 25	33.31 ± 0.75
[S II] 6718	40.13 ± 0.05	252 ± 62	106 ± 25	12.30 ± 0.78
[S II] 6732	40.05 ± 0.05	252 ± 62	106 ± 25	10.42 ± 0.72

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	3.12
Hβ Broad SNR	0.27
Hγ Broad SNR	0.00
AGN frac	0.24
Host frac	0.76
log L_5100,Host	43.44
Fe II/Hβ	—
Fe II/[O III]	—

Quality flags

`spurious_hab/hbb`	0.0/1
`l5100`	1
`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.