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Radiative Transfer in Protoplanetary Disks

Radiative Transfer in Protoplanetary Disks

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Another example: AU Mic<br />

HST 0.606 µm +pola<br />

10−10 e débris autour d’une d’uneM0 M0<br />

brillance<br />

re revers vers35 35AU AU<br />

ur r bleue bleue<br />

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SED and images can be<br />

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illance<br />

re e les les propriétés propriétésdes desgra<strong>in</strong>s gra<strong>in</strong>s<br />

vers 35 AU<br />

reproduced both with compact<br />

Large polarisation → porous<br />

bleue<br />

Schneider gra<strong>in</strong>s (ices) et et al, al, 2006 2006<br />

étude tude sur surHD HD181327 181327<br />

le à deux zones<br />

ation des disques protoplanétaires 37/39<br />

Gra<strong>in</strong>s Gra<strong>in</strong>s poreux, Mathis &<br />

Whieffen<br />

λFλ (W/m2 )<br />

λFλ (W/m2 )<br />

m − m∗ (mag/arcsec2 )<br />

m − m∗ (mag/arcsec2 )<br />

10 −10<br />

10−11 10−11 10−12 10−12 10−13 10−13 10−14 10−14 10−15 10−15 10−16 10−16 10−17 10−17 0.456<br />

6<br />

0.407<br />

7<br />

0.35<br />

8<br />

8<br />

0.30<br />

9<br />

0.25 9<br />

10<br />

0.20 10<br />

11<br />

0.15 11<br />

12<br />

0.10 12<br />

0.05 13<br />

13<br />

0.00 14<br />

14<br />

100 101 102 103 10<br />

λ (µm)<br />

0 101 102 103 Gra<strong>in</strong>s poreux<br />

λ (µm)<br />

H<br />

H<br />

V (F606W)<br />

V (F606W)<br />

2MASS<br />

2MASS Spitzer<br />

Spitzer IRAS<br />

IRAS CSO<br />

CSO JCMT<br />

JCMT total<br />

total <strong>in</strong>ner<br />

<strong>in</strong>ner outer<br />

outer stellar<br />

stellar<br />

tion Études multi-tech. Sédimentation Na<strong>in</strong>es brunes et * Herbig Disques évolués Concl<br />

le : AU Mic<br />

Fitzgerald et al 2007<br />

Q 2 + U 2 /I<br />

model<br />

NW<br />

SE<br />

Porous gra<strong>in</strong>s<br />

20 10 30 40 20 50 30 60 40 70 50 60 80 80 100 90<br />

10 20 30 40 50 60 80 100<br />

projected distance (AU)<br />

projected distance (AU)

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