Comparison of different populations of granular features in the solar photosphere

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Table 1

Properties of the quiet Sun granules reported in the literature.

Ref.	Size	Continuum	Doppler	Solar disk	Spatial	Method
	[arcsec]	intensity	velocity	position	resolution
		[I_c]	[km s^-1]	[arcsec]	[arcsec]

(1)	peak at 1.94	−	−	disk center	0.66	Direct measurement
						of granule separation
(2)	1.25–2.15	−	−	disk center	0.25	Blurred mask
						by Roudier et al. (1985)
						using MFT^-1
(3)	peak at 2.0	0.9–1.10	−	near	0.22	Fourier filtering
				disk center		method developed by
						Roudier & Muller (1986)
(4)	0.17–1.9	0.85–1.15	[−1.5, 1.5]	disk center	0.30	Fourier filtering
						method developed by
						Roudier & Muller (1986)
(5)	peak at 1.50	0.97–1.14	[−3.3, 2.0]	(−31, −200)	0.32	Boxcar smoothing function
				(0, 200)		function
				(0, −200)		by Lites et al. (2008)
(6)	0.31–3.75	0.91–1.13	[−2.2, 3.0]	7 regions	0.32	Technique of
				near		marker-controlled
				disk center		watershed by
						Moga & Gabbouj (1998)
(7)	−	−	[−1.0, 2.0]	(−184,160)	0.32	Individual features

Notes. I_c is the mean continuum intensity.

Reference. (1) Bray & Loughhead (1977); (2) Roudier & Muller (1986); (3) Hirzberger et al. (1997); (4) Hirzberger (2002); (5) Jin et al. (2009); (6) Yu et al. (2011); (7) Lagg et al. (2014).

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