Amorphous carbon in the disk around the post-AGB binary HR 4049 - Discerning dust species with featureless opacity curves

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Table 2

Tested dust species, sizes, and shapes.

Species	Amorphous carbon	(1)
	Amorphous olivine Mg₂xFe_2−2xSiO₄, x ∈ [0,1]	(2)
	Amorphous pyroxene Mg_xFe_1−xSiO₃, x ∈ [0,1]	(3, 4)
	Metallic iron	(5)
	Magnetite Fe₃O₄	^a
	Hematite Fe₂O₃	^a
	Magnesium/iron oxide Mg_xFe_1−xO with x ∈ [0,0.6]	(6)
Size	0.01, 0.1, 1, 3, 5, 10 μm
Shape	Continuous Distribution of Ellipsoids (CDE)^b	(7, 8)
	Distribution of Hollow Spheres (DHS)^c	(7, 8)

Notes.

^(a)

Amaury H.M.J. Triaud, unpublished. Extracted from the JENA database.

^(b)

Only valid in Rayleigh limit; grain sizes <0.1 μm.

^(c)

f_max between 0 (i.e., solid Mie grains) and 0.8.

Reference. (1) Jäger et al. (1998); (2) Scott & Duley (1996); (3) Jäger et al. (1994); (4) Dorschner et al. (1995); (5) Henning & Stognienko (1996); (6) Henning et al. (1995); (7) Min et al. (2003); (8) Min et al. (2005).

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