Table 3: The five parameters of the dust model: the normalization temperature T₀, the inner radius of the dust shell $r_{{\rm in}}$ , the outer radius of the dust shell $r_{{\rm out}}$ , the spectral index p and the density parameter m. The last column lists the energy ratio $L_{{\rm IR}}/L_\ast$ .
Name T₀ $r_{{\rm in}}$ $r_{{\rm in}}$ $r_{{\rm out}}$ $r_{{\rm out}}$ p m $L_{{\rm IR}}/L_\ast$

(K) ( $R_\ast$ ) (AU) ( $R_\ast$ ) (AU)

TW Cam 3489 11 $4.5\pm1.6$ 5200 $2140\pm890$ 0.4 1.8 $0.45 \pm 0.06$

RV Tau
3280 10 $4.7\pm1.7$ 2000 $930\pm340$ 0.2 1.8 $0.43 \pm 0.06$

SU Gem
4152 30 $4.9\pm1.6$ 100 $16.3\pm5.4$ 0.0 1.8 $0.34 \pm 0.05$

UY CMa
4008 15 $5.3\pm2.0$ 400 $138\pm52$ 0.2 1.0 $0.37 \pm 0.05$

U Mon
3625 30 $11.5\pm4.2$ 600 $229\pm84$ 0.1 1.8 $0.07 \pm 0.01$

AC Her
4036 50 $12.5\pm4.4$ 900 $224\pm80$ 0.3 0.0 $0.014 \pm 0.002$

R Sct
3357 18 $13.4\pm5.3$ 7100 $5300\pm2100$ 0.9 1.8 $0.020 \pm 0.003$

**Table 3:** The five parameters of the dust model: the normalization temperature T₀, the inner radius of the dust shell $r_{{\rm in}}$ , the outer radius of the dust shell $r_{{\rm out}}$ , the spectral index p and the density parameter m. The last column lists the energy ratio $L_{{\rm IR}}/L_\ast$ .
Name	T₀	$r_{{\rm in}}$	$r_{{\rm in}}$	$r_{{\rm out}}$	$r_{{\rm out}}$	p	m	$L_{{\rm IR}}/L_\ast$
	(K)	( $R_\ast$ )	(AU)	( $R_\ast$ )	(AU)
TW Cam	3489	11	$4.5\pm1.6$	5200	$2140\pm890$	0.4	1.8	$0.45 \pm 0.06$
RV Tau	3280	10	$4.7\pm1.7$	2000	$930\pm340$	0.2	1.8	$0.43 \pm 0.06$
SU Gem	4152	30	$4.9\pm1.6$	100	$16.3\pm5.4$	0.0	1.8	$0.34 \pm 0.05$
UY CMa	4008	15	$5.3\pm2.0$	400	$138\pm52$	0.2	1.0	$0.37 \pm 0.05$
U Mon	3625	30	$11.5\pm4.2$	600	$229\pm84$	0.1	1.8	$0.07 \pm 0.01$
AC Her	4036	50	$12.5\pm4.4$	900	$224\pm80$	0.3	0.0	$0.014 \pm 0.002$
R Sct	3357	18	$13.4\pm5.3$	7100	$5300\pm2100$	0.9	1.8	$0.020 \pm 0.003$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations and data reduction: 850 ${\mu }$ m SCUBA data
	3 Spectral Energy Distributions (SEDs)
	4 An optically thin dust fit
	5 Discussion: Characteristics of the dust excess
	6 Conclusions
	References
	Online Material
	Appendix A: Photometric data