2MASX J03395785-0612149

Observation

Spectrum ID	21832881_sp1
Alt name	g0339579-061215
z	0.0501
RA, Dec	54.9912, -6.2042
MJD	60914.79
SNR/Å B/R	9.6/20.7
Obs Airmass	1.11
SMSS ID	21832881
Closest SMSS	14.61'', 21832880
SMSS Mean r_6"ap	16.6 ± 0.1
2MASS K_ext	12.1 ± 0.1

AGN Properties

Spectrum Type	Sy 2
Quality Flag	good
AGN reference	6dFGS
MW E(B−V)	0.043
Power law α_ν	-1.96 ± 0.04
log L_5100,AGN	41.81 ± 0.22
log Hβ_Br/[O III]	—
log M_L5100/M_☉	—
log M_Hα/M_☉	—
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	38.97 ± 0.40	267 ± 62	112 ± 25	7.32 ± 5.88
He II Broad	40.42 ± 0.13	6034 ± 62	2562 ± 25	204.69 ± 30.32
Hβ Narrow	39.47 ± 0.33	348 ± 91	522 ± 44	21.63 ± 12.76
Hβ Broad	—	—	—	—
[O III] 5007	39.92 ± 0.13	348 ± 91	522 ± 44	65.91 ± 12.60
He I Narrow	38.83 ± 0.38	267 ± 62	112 ± 25	5.33 ± 3.23
He I Broad	39.55 ± 0.28	2349 ± 62	998 ± 25	28.44 ± 9.80
[O I] 6300	—	—	—	—
Hα Narrow	39.92 ± 0.05	267 ± 62	112 ± 25	65.64 ± 3.95
Hα Broad	—	—	—	—
[N II] 6585	39.92 ± 0.04	267 ± 62	112 ± 25	65.83 ± 3.86
[S II] 6718	39.57 ± 0.09	267 ± 62	112 ± 25	29.59 ± 3.32
[S II] 6732	39.34 ± 0.14	267 ± 62	112 ± 25	17.65 ± 3.24

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	0.92
Hβ Broad SNR	0.00
Hγ Broad SNR	0.00
AGN frac	0.04
Host frac	0.96
log L_5100,Host	43.20
Fe II/Hβ	—
Fe II/[O III]	1.55

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.