[AAA] Fwd: Seminario Virtual Room DAS - UChile:: Exploring planet formation across the stellar mass range - James Miley, ALMA/NAOJ

[Rene A. Mendez]

Estimado/as,

Les recuerdo que este jueves 05 de Agosto a las 12:15 hrs, tendremos 
seminario en el Departamento de Astronomía de la Universidad de Chile.

*Speaker*: James Miley, ALMA/NAOJ

*Title*: Exploring planet formation across the stellar mass range

*Abstract*: In recent years ALMA imaging of protoplanetary discs has 
revealed a broad and beautiful range of structures and morphologies 
alerting us to the underlying mechanisms of planet formation. Despite 
this variety, we can identify some trends that begin to reveal to us the 
nature of planet formation, one such trend is with the mass of the 
stellar host. In this seminar I will present results from my work that 
uses the structure, evolution and mass of protoplanetary discs to study 
how the mechanisms of planet formation differ depending on the stellar 
host.

Mass of the central object is linked to the mass of the planet-building 
material, the size of the disc, and observational results suggest a link 
to disk lifetime as well. Furthermore, the evolution of stellar 
luminosity during the disc-hosting phase alters disc mid-plane 
temperature suggesting temporal variations of disc composition for any 
given orbital radius in the disc. I will present modelling of 
protoplanetary discs using self-consistent calculations of mid-plane 
temperature that suggest a dichotomy in the temperature, and 
subsequently the composition, of disc mid-planes around low and 
intermediate mass stars. Applying this modelling to the HR8799 planetary 
system, we can explore what constraints can be placed on both where and 
when giant planets in the system may have formed.


Virtual room: 
https://uchile.zoom.us/j/89046359858?pwd=dURFTjIzbXU0NkNpdGFZb0sxRVZJdz09 
<https://uchile.zoom.us/j/89046359858?pwd=dURFTjIzbXU0NkNpdGFZb0sxRVZJdz09>

Rene A. Mendez
Seminar Coordinator
DAS/UChile - rmendez en uchile.cl <mailto:rmendez en uchile.cl>
-- 
-- 
Saludos,

Alejandro Leal Obreque
Departamento de Astronomía
FCFM - UNIVERSIDAD DE CHILE
22 977 1154
aleal en das.uchile.cl <mailto:aleal en das.uchile.cl>
www.das.uchile.cl <http://www.das.uchile.cl/>


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