The Herschel Virgo Cluster Survey - III. A constraint on dust grain lifetime in early-type galaxies

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Table 2:

Parameter values for calculation of grain lifetime and the power of their dependence on the derived lifetime.
$S_{\rm rms}$	$\kappa_{\rm d}(250)$	$T_{\rm d}$	A $^{\ast}$	$\tau_1$	$v_\infty$	L₄
mJy	$\rm m^2~kg^{-1}$	K	10^-10		$\rm km~s^{-1}$	$10^{4}~L_\odot$
9.6	0.6517	30	6.5	fit	10	0.3
1	-1	-1 $^{\dagger}$	1	1	1	0.5

Notes. E.g., $t_{\rm g}\propto 1/T_{\rm d}$ . $^{(\ast)}$ The units of A are $M_{\odot}$ yr^-1/(km s^-1). $^{(\dagger)}$ In the Rayleigh-Jeans limit; which is a bad approximation for $T_{\rm d}\lesssim 20\;\rm K$ .

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