The dusty envelopes of asymptotic giant branch stars with ultraviolet excesses

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Table 1

Best-fit parameters from DUSTY models.

Source	T_*	T_inn	n	τ₅₅₀	log(Y)	L	R_inn	R_out	M_dust	Ṁ_dust	δ
	(K)	(K)				(L_⊙)	(10¹³cm)	(10¹⁶cm)	(10⁻⁶ M_⊙)	(10⁻¹⁰ M_⊙ yr⁻¹)
EY Hya	$3000_{- 200}^{+ 100}$ $Mathematical equation: $3000^{+100}_{-200}$$	$1350_{- 160}^{+ 130}$ $Mathematical equation: $1350^{+130}_{-160}$$	${1.86}_{- 0.06}^{+ 0.05}$ $Mathematical equation: $1.86^{+0.05}_{-0.06}$$	${0.35}_{- 0.09}^{+ 0.16}$ $Mathematical equation: $0.35^{+0.16}_{-0.09}$$	${3.8}_{- 0.4}^{+ 0.7}$ $Mathematical equation: $3.8^{+0.7}_{-0.4}$$	5200±800	7.9	50	29	19	310
FH Vir	$3400_{- 100}^{+ 100}$ $Mathematical equation: $3400^{+100}_{-100}$$	$1500_{- 150}^{+ 150}$ $Mathematical equation: $1500^{+150}_{-150}$$	${1.75}_{- 0.05}^{+ 0.05}$ $Mathematical equation: $1.75^{+0.05}_{-0.05}$$	${0.05}_{- 0.02}^{+ 0.02}$ $Mathematical equation: $0.05^{+0.02}_{-0.02}$$	${4.4}_{- 0.2}^{+ 1.0}$ $Mathematical equation: $4.4^{+1.0}_{-0.2}$$	2100±300	3.3	83	13	–	–
IN Hya	$3500_{- 200}^{+ 100}$ $Mathematical equation: $3500^{+100}_{-200}$$	$1450_{- 140}^{+ 170}$ $Mathematical equation: $1450^{+170}_{-140}$$	${1.78}_{- 0.05}^{+ 0.07}$ $Mathematical equation: $1.78^{+0.07}_{-0.05}$$	${0.04}_{- 0.02}^{+ 0.03}$ $Mathematical equation: $0.04^{+0.03}_{-0.02}$$	${4.0}_{- 0.2}^{+ 1.0}$ $Mathematical equation: $4.0^{+1.0}_{-0.2}$$	1700±200	3.3	33	2.4	–	–
R LMi	$3100_{- 200}^{+ 100}$ $Mathematical equation: $3100^{+100}_{-200}$$	$1250_{- 130}^{+ 110}$ $Mathematical equation: $1250^{+110}_{-130}$$	${2.03}_{- 0.04}^{+ 0.04}$ $Mathematical equation: $2.03^{+0.04}_{-0.04}$$	${1.6}_{- 0.2}^{+ 0.3}$ $Mathematical equation: $1.6^{+0.3}_{-0.2}$$	${4.6}_{- 0.2}^{+ 0.8}$ $Mathematical equation: $4.6^{+0.8}_{-0.2}$$	3300±500	4.8	190	48	5.2	810
R UMa	$3200_{- 400}^{+ 100}$ $Mathematical equation: $3200^{+100}_{-400}$$	$700_{- 80}^{+ 120}$ $Mathematical equation: $700^{+120}_{-80}$$	${2.13}_{- 0.04}^{+ 0.06}$ $Mathematical equation: $2.13^{+0.06}_{-0.04}$$	${0.40}_{- 0.10}^{+ 0.12}$ $Mathematical equation: $0.40^{+0.12}_{-0.10}$$	${4.0}_{- 0.4}^{+ 0.8}$ $Mathematical equation: $4.0^{+0.8}_{-0.4}$$	5000±900	26	260	30	1.7	760
RR Eri	$3300_{- 200}^{+ 100}$ $Mathematical equation: $3300^{+100}_{-200}$$	$800_{- 120}^{+ 150}$ $Mathematical equation: $800^{+150}_{-120}$$	${1.84}_{- 0.06}^{+ 0.06}$ $Mathematical equation: $1.84^{+0.06}_{-0.06}$$	${0.04}_{- 0.02}^{+ 0.03}$ $Mathematical equation: $0.04^{+0.03}_{-0.02}$$	${3.0}_{- 0.5}^{+ 0.6}$ $Mathematical equation: $3.0^{+0.6}_{-0.5}$$	4700±900	20	20	3.2	6.0	680
RT Cnc	$3300_{- 100}^{+ 100}$ $Mathematical equation: $3300^{+100}_{-100}$$	$1350_{- 140}^{+ 140}$ $Mathematical equation: $1350^{+140}_{-140}$$	${1.92}_{- 0.05}^{+ 0.06}$ $Mathematical equation: $1.92^{+0.06}_{-0.05}$$	${0.27}_{- 0.06}^{+ 0.09}$ $Mathematical equation: $0.27^{+0.09}_{-0.06}$$	${4.0}_{- 0.4}^{+ 0.7}$ $Mathematical equation: $4.0^{+0.7}_{-0.4}$$	2100±300	4.2	42	5.5	3.0	230
RU Her^*	<2700	$700_{- 130}^{+ 140}$ $Mathematical equation: $700^{+140}_{-130}$$	${1.98}_{- 0.06}^{+ 0.05}$ $Mathematical equation: $1.98^{+0.05}_{-0.06}$$	${0.20}_{- 0.07}^{+ 0.14}$ $Mathematical equation: $0.20^{+0.14}_{-0.07}$$	${3.4}_{- 0.4}^{+ 0.7}$ $Mathematical equation: $3.4^{+0.7}_{-0.4}$$	20 000±5000	50	130	72	13	1230
RW Boo	$3200_{- 300}^{+ 100}$ $Mathematical equation: $3200^{+100}_{-300}$$	$600_{- 100}^{+ 170}$ $Mathematical equation: $600^{+170}_{-100}$$	${1.90}_{- 0.09}^{+ 0.14}$ $Mathematical equation: $1.90^{+0.14}_{-0.09}$$	${0.06}_{- 0.03}^{+ 0.06}$ $Mathematical equation: $0.06^{+0.06}_{-0.03}$$	${4.0}_{- 0.1}^{+ 1.0}$ $Mathematical equation: $4.0^{+1.0}_{-0.1}$$	2200±300	6.6	66	3.5	2.1	1670
RZ UMa	$3100_{- 200}^{+ 100}$ $Mathematical equation: $3100^{+100}_{-200}$$	$1250_{- 120}^{+ 150}$ $Mathematical equation: $1250^{+150}_{-120}$$	${1.72}_{- 0.05}^{+ 0.05}$ $Mathematical equation: $1.72^{+0.05}_{-0.05}$$	${0.20}_{- 0.05}^{+ 0.06}$ $Mathematical equation: $0.20^{+0.06}_{-0.05}$$	${3.4}_{- 0.4}^{+ 0.5}$ $Mathematical equation: $3.4^{+0.5}_{-0.4}$$	5100±1000	7.4	19	21	17	70
ST UMa	$3400_{- 200}^{+ 100}$ $Mathematical equation: $3400^{+100}_{-200}$$	$1150_{- 110}^{+ 170}$ $Mathematical equation: $1150^{+170}_{-110}$$	${1.86}_{- 0.04}^{+ 0.07}$ $Mathematical equation: $1.86^{+0.07}_{-0.04}$$	${0.09}_{- 0.03}^{+ 0.03}$ $Mathematical equation: $0.09^{+0.03}_{-0.03}$$	${3.6}_{- 0.1}^{+ 0.5}$ $Mathematical equation: $3.6^{+0.5}_{-0.1}$$	2900±500	7.5	30	4.0	–	–
SV Peg	$2900_{- 200}^{+ 200}$ $Mathematical equation: $2900^{+200}_{-200}$$	$950_{- 100}^{+ 160}$ $Mathematical equation: $950^{+160}_{-100}$$	${1.72}_{- 0.06}^{+ 0.10}$ $Mathematical equation: $1.72^{+0.10}_{-0.06}$$	${0.20}_{- 0.07}^{+ 0.13}$ $Mathematical equation: $0.20^{+0.13}_{-0.07}$$	${3.0}_{- 0.5}^{+ 0.3}$ $Mathematical equation: $3.0^{+0.3}_{-0.5}$$	10 000±2000	21	21	41	45	330
T Dra	$2700_{- 200}^{+ 100}$ $Mathematical equation: $2700^{+100}_{-200}$$	$1200_{- 110}^{+ 110}$ $Mathematical equation: $1200^{+110}_{-110}$$	${2.00}_{- 0.03}^{+ 0.03}$ $Mathematical equation: $2.00^{+0.03}_{-0.03}$$	${4.5}_{- 0.5}^{+ 1.0}$ $Mathematical equation: $4.5^{+1.0}_{-0.5}$$	${4.8}_{- 0.4}^{+ 0.7}$ $Mathematical equation: $4.8^{+0.7}_{-0.4}$$	13 000±3000	19	1200	1200	37	780
TU And	$3200_{- 400}^{+ 100}$ $Mathematical equation: $3200^{+100}_{-400}$$	$1500_{- 120}^{+ 180}$ $Mathematical equation: $1500^{+180}_{-120}$$	${1.84}_{- 0.05}^{+ 0.07}$ $Mathematical equation: $1.84^{+0.07}_{-0.05}$$	${0.35}_{- 0.09}^{+ 0.15}$ $Mathematical equation: $0.35^{+0.15}_{-0.09}$$	${4.4}_{- 0.1}^{+ 1.0}$ $Mathematical equation: $4.4^{+1.0}_{-0.1}$$	7500±1700	5.9	150	127	–	–
UY Leo	$3300_{- 200}^{+ 100}$ $Mathematical equation: $3300^{+100}_{-200}$$	$1350_{- 140}^{+ 160}$ $Mathematical equation: $1350^{+160}_{-140}$$	${1.80}_{- 0.06}^{+ 0.06}$ $Mathematical equation: $1.80^{+0.06}_{-0.06}$$	${0.20}_{- 0.04}^{+ 0.05}$ $Mathematical equation: $0.20^{+0.05}_{-0.04}$$	${4.2}_{- 0.1}^{+ 1.0}$ $Mathematical equation: $4.2^{+1.0}_{-0.1}$$	2000±300	4.0	64	23	–	–
V Eri	$3000_{- 300}^{+ 100}$ $Mathematical equation: $3000^{+100}_{-300}$$	$1200_{- 140}^{+ 140}$ $Mathematical equation: $1200^{+140}_{-140}$$	${1.74}_{- 0.06}^{+ 0.06}$ $Mathematical equation: $1.74^{+0.06}_{-0.06}$$	${0.45}_{- 0.10}^{+ 0.19}$ $Mathematical equation: $0.45^{+0.19}_{-0.10}$$	${3.2}_{- 0.4}^{+ 0.4}$ $Mathematical equation: $3.2^{+0.4}_{-0.4}$$	5100±1000	8.1	13	26	65	90
VY UMa	$3100_{- 300}^{+ 100}$ $Mathematical equation: $3100^{+100}_{-300}$$	$1450_{- 130}^{+ 160}$ $Mathematical equation: $1450^{+160}_{-130}$$	${2.22}_{- 0.10}^{+ 0.12}$ $Mathematical equation: $2.22^{+0.12}_{-0.10}$$	${0.40}_{- 0.10}^{+ 0.15}$ $Mathematical equation: $0.40^{+0.15}_{-0.10}$$	${4.0}_{- 0.1}^{+ 1.0}$ $Mathematical equation: $4.0^{+1.0}_{-0.1}$$	4700±900	6.1	24	0.15	0.050	40 000
VY UMa^**	–	–	–	–	–	–	–	–	5.5	–	–
W Peg	$3100_{- 400}^{+ 100}$ $Mathematical equation: $3100^{+100}_{-400}$$	$950_{- 120}^{+ 150}$ $Mathematical equation: $950^{+150}_{-120}$$	${2.03}_{- 0.05}^{+ 0.05}$ $Mathematical equation: $2.03^{+0.05}_{-0.05}$$	${0.35}_{- 0.11}^{+ 0.16}$ $Mathematical equation: $0.35^{+0.16}_{-0.11}$$	${4.0}_{- 0.3}^{+ 0.8}$ $Mathematical equation: $4.0^{+0.8}_{-0.3}$$	5300±1000	15	150	26	4.1	1100
Y CrB	$3100_{- 300}^{+ 100}$ $Mathematical equation: $3100^{+100}_{-300}$$	$1300_{- 120}^{+ 160}$ $Mathematical equation: $1300^{+160}_{-120}$$	${1.76}_{- 0.05}^{+ 0.06}$ $Mathematical equation: $1.76^{+0.06}_{-0.05}$$	${0.25}_{- 0.08}^{+ 0.13}$ $Mathematical equation: $0.25^{+0.13}_{-0.08}$$	${3.2}_{- 0.4}^{+ 0.5}$ $Mathematical equation: $3.2^{+0.5}_{-0.4}$$	4500±800	6.4	64	7.5	8.1	160
Y Gem	$3100_{- 200}^{+ 100}$ $Mathematical equation: $3100^{+100}_{-200}$$	$1250_{- 150}^{+ 160}$ $Mathematical equation: $1250^{+160}_{-150}$$	${1.70}_{- 0.07}^{+ 0.06}$ $Mathematical equation: $1.70^{+0.06}_{-0.07}$$	${0.03}_{- 0.02}^{+ 0.03}$ $Mathematical equation: $0.03^{+0.03}_{-0.02}$$	${2.8}_{- 0.7}^{+ 0.5}$ $Mathematical equation: $2.8^{+0.5}_{-0.7}$$	8500±1800	9.2	5.8	1.0	–	–
Z Cnc	$3200_{- 200}^{+ 100}$ $Mathematical equation: $3200^{+100}_{-200}$$	$1000_{- 180}^{+ 200}$ $Mathematical equation: $1000^{+200}_{-180}$$	${1.6}_{- 0.2}^{+ 0.2}$ $Mathematical equation: $1.6^{+0.2}_{-0.2}$$	${0.10}_{- 0.03}^{+ 0.05}$ $Mathematical equation: $0.10^{+0.05}_{-0.03}$$	${2.0}_{- 0.4}^{+ 0.3}$ $Mathematical equation: $2.0^{+0.3}_{-0.4}$$	4200±600	12	1.2	1.1	11	55

Notes. Column 1: name of the source; Col. 2: stellar effective temperature; Col. 3: dust shell inner radius temperature; Col. 4: dust shell density power-law index; Col. 5: dust shell radial optical depth at 550 nm (from R_inn to R_out); Col. 6: logarithm of the dust shell outer-to-inner radii ratio; Col. 7: bolometric luminosity; Col. 8: dust shell inner radius; Col. 9: dust shell outer radius; Col. 10: dust shell mass; Col. 11: dust mas-loss rate; and Col. 12: gas-to-dust ratio. ^*In the case of RU Her, the sensitivity study indicates T_* <2700K, although we noted that 2600 K fits the SED correctly (see Fig. 1). ^**In the case of VY UMa, the dust mass estimated for the detached shell is included separately.

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