LEDA 907618

Observation

Spectrum ID	6720011_sp1
Alt name	PGC 907618
z	0.0784
RA, Dec	356.1704, -15.7019
MJD	60932.55
SNR/Å B/R	9.7/21.6
Obs Airmass	1.08
SMSS ID	6720011
Closest SMSS	6.43'', 2011612525
SMSS Mean r_6"ap	16.7 ± 0.1
2MASS K_ext	12.0 ± 0.1

AGN Properties

Spectrum Type	Sy 2
Quality Flag	good
AGN reference	PGC
MW E(B−V)	0.023
Power law α_ν	-1.98 ± 0.01
log L_5100,AGN	43.12 ± 0.03
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	39.79 ± 0.29	534 ± 62	226 ± 25	2.40 ± 1.10
He II Narrow	39.87 ± 0.29	534 ± 62	226 ± 25	2.83 ± 0.98
He II Broad	39.66 ± 0.51	1193 ± 62	506 ± 25	1.77 ± 1.37
Hβ Narrow	40.35 ± 0.13	568 ± 63	350 ± 32	8.69 ± 1.50
Hβ Broad	—	—	—	—
[O III] 5007	41.31 ± 0.02	568 ± 63	350 ± 32	78.32 ± 1.70
He I Narrow	—	—	—	—
He I Broad	—	—	—	—
[O I] 6300	40.34 ± 0.05	534 ± 62	226 ± 25	8.46 ± 0.55
Hα Narrow	41.35 ± 0.01	534 ± 62	226 ± 25	75.75 ± 0.67
Hα Broad	—	—	—	—
[N II] 6585	41.24 ± 0.01	534 ± 62	226 ± 25	59.08 ± 0.66
[S II] 6718	40.77 ± 0.03	534 ± 62	226 ± 25	22.89 ± 0.72
[S II] 6732	40.75 ± 0.02	534 ± 62	226 ± 25	21.83 ± 0.79

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	0.00
Hβ Broad SNR	0.00
Hγ Broad SNR	0.00
AGN frac	0.33
Host frac	0.67
log L_5100,Host	43.43
Fe II/Hβ	—
Fe II/[O III]	—

Quality flags

`spurious_hab/hbb`	1.0/0
`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.