S udy o adial and e ical s uc u e o he edge-on p o oplane a y
disk su ounding SST au042021
C. Fouche 1*, A. Du ey1, S. Guillo eau1, V. Pie u2 e al.
a
❖ALMA obse a ions: 12CO (2-1) and
(3-2), 13CO (2-1), C18O (2-1) lines and
he con inuum a 150, 230, 333 GHz
om wo ALMA a chi al p ojec s.
❖NOEMA obse a ions: HCO+ (3-2)
- Loca ed in he Tau us cloud - The TTau i s a is su ounded by a class II edge-on disk
- S ella mass o 0.29 M⊙ - ALMA also e eals a la ge CO disk (∼700 au adius)
SST au042021:
Aim: Cha ac e ize he molecula laye and dus disk p ope ies, by es ima ing he empe a u e p o ile and densi y dis ibu ion o
be e unde s and he physical and chemical s uc u e o he disk using he omog aphic me hod and he DiskFi model.
C. Fouche : S udy o adial and e ical s uc u e o he edge-on p o oplane a y disk su ounding
SST au042021
Obse a ions - models
12
C
O
(3
-2
)
13C
O
(2-
1)
C18
O
(2-
1)
HC
O+
(3-
2)
Key Resul s & Implica ions
❖Gas & Dus S uc u e:
➢Midplane empe a u es ~8-12 K, molecula laye ~16 K,
CO a mosphe e ~31 K a 100 AU.
➢CO and HCO⁺ ex end beyond he dus disk (~300 AU).
❖Ve ical S a i ica ion & Disk Winds:
➢HCO⁺ ex ends 30% highe han 13CO, consis en wi h
in e media e al i ude o ma ion.
➢CO emission highly ex ended, wi h wo o oidal gas
s uc u es possibly linked o H₂ winds (JWST).
❖Implica ions o Plane Fo ma ion:
➢Disk mass ~0.05 M☉.
➢HCO⁺ (3-2) he maliza ion helps cons ain H₂ densi y (~3
× 10⁶ cm⁻³ a 100-200 AU).
C. Fouche : S udy o adial and e ical s uc u e o he edge-on p o oplane a y disk su ounding
SST au042021
Obse a ions - models
12
C
O
(3
-2
)
13C
O
(2-
1)
C18
O
(2-
1)
HC
O+
(3-
2)
Key Resul s & Implica ions
❖Gas & Dus S uc u e:
➢Midplane empe a u es ~8-12 K, molecula laye ~16 K,
CO a mosphe e ~31 K a 100 AU.
➢CO and HCO⁺ ex end beyond he dus disk (~300 AU).
❖Ve ical S a i ica ion & Disk Winds:
➢HCO⁺ ex ends 30% highe han 13CO, consis en wi h
in e media e al i ude o ma ion.
➢CO emission highly ex ended, wi h wo o oidal gas
s uc u es possibly linked o H₂ winds (JWST).
❖Implica ions o Plane Fo ma ion:
➢Disk mass ~0.05 M☉.
➢HCO⁺ (3-2) he maliza ion helps cons ain H₂ densi y (~3
× 10⁶ cm⁻³ a 100-200 AU).
I you wan mo e esul s come o see my pos e !
