Structure of Herbig AeBe disks at the milliarcsecond scale - A statistical survey in the H band using PIONIER-VLTI

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Table 7

Parameterizations of broadened elliptical ring.

Geometrical	a_r	Ring angular radius ^a
	a_k	Kernel angular radius

Physical		Half light radius ^a^b
	w = a_k/a	Kernel/half-light

Fit	l_a = log ₁₀(a/ 1 mas)	−1 ≤ l_a ≤ + 1.5
	l_kr = log ₁₀(a_k/a_r)	−1 ≤ l_kr ≤ + 1

Notes.

^(a)

A single notation is used for radii, whether angular (radians, milliarcseconds) or linear (AU); the context resolves ambiguities.

^(b)

Actually, an approximation to the half light radius valid to 5% or better for our radial profiles.

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