Quantifying the completeness and reliability of visual source extraction: An examination of eight thousand data cubes by eye

Open Access

Table 2

Selected HI survey parameters.

Survey	Spatial res. (arcmin)	Spectral res. (km s⁻¹)	rms (mJy)	Extraction method	No. sources
ALFALFA	3.5	10	2.3	Automatic	31 502
AGES	3.5	10	0.6	Visual	1231
HIPASS	15.5	18	12.2	MULTIFIND	5317
FASHI	2.9	6	1.5	SoFiA	41 741

Notes. The rms is quoted from the median level of all detections in each survey at its nominal resolution, before any additional smoothing was applied.

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