Gone

COMPOSITION OF THE HD 169142 DISK AND IT’S EMBEDDED PLANET
Luke Key e - Queen Ma y Uni e si y o London - l.key [email protected]
ALMA
𝜆 = 1.3mm
inne ing ~25 au
ou e ings ~60 au
SPHERE NIR IMAGING
Hammond e al. (2023)
ALMA ARCHIVAL DATA
Boo h e al. (2023)
SiS J=19-18
ALMA ARCHIVAL DATA
Law e al. (2023)
plane ?

CHEMICAL MODEL
DALI MODELLING
DENSITY AND TEMPERATURE STRUCTURE
DALI MODELLING
DENSITY AND TEMPERATURE STRUCTURE
RESULTS
Is i a CPD?
𝐼𝜈= 𝐵𝜈(𝑇)
SiS emission in ensi y
Ω = 𝐹
𝐵𝜈𝑇 Δ𝑣
SiS emi ing a ea
Tempe a u e (K)
Emi ing adius (AU)
1. Measu e he SiS Emi ing A ea

Is i a CPD?
(au)
ሶ
𝑀 ~ 10−4 𝑀⊙ y −1
2. Ma ch measu ed a ea o analy ical CPD models
Is i a CPD?
no
HD 169142 has a ich chemical in en o y
SUMMARY
Ca bon and oxygen a e in high abundance in he gas phase
- li le/no deple ion in he inne disk
- oxygen somewha deple ed in he ou e disk (?)
Sul u deple ed by ac o ~1000
- model d ama ically unde p edic s SiS emission
SiS likely aces an ou low o shock, no a CPD
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