Dust coagulation and fragmentation in molecular clouds - I. How collisions between dust aggregates alter the dust size distribution

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Volume 502 / No 3 (August II 2009)

A&A, 502 3 (2009) 845-869

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Table 1:

Quantities provided by the adjusted collision recipe.
Symbol	Description	Energy scaling parameters in Eq. (13)
		Global	Local
(1)	(2)	(3)	(4)
$f_{\rm miss}$	Fraction of collisions that resulted in a miss^a	--	-
$N_{\rm f}$	Mean number of large fragments	$N_{\rm tot}E_{\rm br}$	$N_\mu E_{\rm br}$
$S_{\rm f}$	Standard deviation of the $N_{\rm f}$	$N_{\rm tot}E_{\rm br}$	$N_\mu E_{\rm br}$
$f_{\rm pwl}$	The fraction of the mass in the small fragments component. Normalized to $N_{\rm tot}$ (global recipe) or $N_\mu$ (local recipe).	$N_{\rm tot}E_{\rm br}$	$N_\mu E_{\rm br}$
q	Exponent of the power-law distribution of small fragments	$N_{\rm tot}E_{\rm br}$	$N_\mu E_{\rm br}$
$C_\phi=\phi_\sigma/\phi_\sigma^{\rm ini}$	Relative change of the geometrical filling factor.	$N_{\rm tot}E_{\rm roll}$	$N_{\rm tot}E_{\rm roll}$

Note: Columns (3)-(4) denote the energy scaling expressions used to obtain the dimensionless energy parameter, $\varepsilon$ , see Eq. (13). ^a Given as function of $a_{\rm out}/a_\sigma$ instead of $\phi _\sigma$ , see Appendix B.3.

Source LaTeX | All tables | In the text

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