HALOGAS: Strong constraints on the neutral gas reservoir and accretion rate in nearby spiral galaxies

Open Access

Table 2.

Parameters used for source finding in SOF IA.

Parameter	Value
Noise determination	Global
Detection threshold	4σ
Kernels (pixels) ^(a)	[[0,0,0,‘g’],[0,0,2,‘g’],
	[0,0,4,‘g’],[2,2,0,‘g’],
	[2,2,2,‘g’],[2,2,4,‘g’],
	[4,4,0,‘g’],[4,4,2,‘g’],
	[4,4,4,‘g’]]
Merging radius (pixels)	2,2,2
Merging minimum size (pixels)	2,2,2
Reliability	0.95
Kernel scale	0.30
Integrated signal-to-noise cut	27

Notes.

^(a)

The kernels are built up as [x,y,z, ‘shape’], where x, y, and z are the kernel sizes in the corresponding dimensions, and “shape” stands for the type of smoothing. The g in the smoothing kernels indicates Gaussian smoothing.

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