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Home All issues Volume 518 (July-August 2010) A&A, 518 (2010) L43 Full HTML

 

 

Table 2:

Parameters of the reference model ( $M_{{\rm ref}}$).

Component $\rightarrow$ 		Hota (H$_{\rm C}$) Warm ($W_{\rm C}$) Extended ($E_{\rm C}$)
Radius (pc) 23 120 610
$T_{\rm dust}$ (K) 400-150 95 41
$\tau_{{\rm 100~\mu m}}$ 0.4 1.0 0.5
L ($L_\odot$) $7.5\times10^{11}$ $1.9\times10^{12}$ $9.6\times10^{11}$
Gas Massb ($M_\odot$) $1.9\times10^{6}$ $5.9\times10^{8}$ $7.7 \times 10^{9}$
$N({\rm H_2O})$ (cm-2) - $5.2\times10^{17}$ $2.0\times10^{16}$
$V_{{\rm turb}}$ (km s-1) - 60d 40
$n({\rm H_2})^{{\rm c}}$ (cm-3) - $1.5\times10^6$ $5 \times 10^5$
$T_{\rm gas}$c (K) - 150 100

Notes. (a) The hot component does not contribute to the H2O emission; (b) a gas-to-dust mass ratio of 100 is assumed. (c) These parameters are not well determined for $W_{\rm C}$, as the excitation is dominated by radiative pumping. (d) From Downes & Solomon (1998).


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