[Astronomy seminar] Astronomy seminar TODAY 10:30 FC61: Per Bjerkeli

[Astronomy seminar announcements]

On 2019-09-02 14:08 , Alexis Brandeker wrote:
> Astronomy seminar
>
> Time & location: Friday September 6, 10:30 in FC61
>
> Speaker: Per Bjerkeli (Chalmers)
>
> Title: Resolving star and planet formation with ALMA
>
> Abstract:
> Disks around young stars are the sites of planet formation. As such, 
> the physical and chemical structure of disks have direct impact on the 
> formation of planetary bodies. The innermost disk regions are 
> particularly interesting, due to the potential for planet formation. 
> These are also the regions where winds, capable of affecting the disk 
> build-up itself, are launched magnetically. Meanwhile, the only chance 
> of forming a planetary system is around a star at a stage when its 
> circumstellar disk still hosts a sufficient mass reservoir. Until very 
> recently, we have lacked the facilities to provide the necessary 
> observational constraints and insights into what is actually going on 
> the smallest scales and during the earliest stages of solar system 
> formation, meaning it is completely uncharted territory.
>
> Within the framework of the "Resolving star formation with ALMA" 
> program, we are targeting young disks and outflows with ALMA in its 
> largest possible configuration (16 km baselines, yielding a resolution 
> of 2-6 au) to examine the relation between early disk evolution, 
> outflow launching, and star- and planet-formation. I will present an 
> overview of the program, focusing on the most recent results. The 
> first resolved images of outflow launching from a disk were reported 
> towards the Class I source TMC1A. Since then, we have continued our 
> observations towards TMC1A and in addition included the younger B335 
> system in the study. The observations allow us to constrain the 
> structure of the disks, but also to constrain the launching mechanism 
> and the properties of outflows on the smallest scales.
>
>
> Other upcoming activites:
>
> 13/9 (Fri) @ 10:30: Carina Persson (Chalmers)
> 18/9 (Wed) @ 10:00: PhD Defence Emanuel Gafton in FA31
> 20/9 (Fri) @ 10:30: [CANCELLED: John Miller (Oxford)]
> 23/9 (Mon) @ 13:00: PhD Defence Anders Nyholm in FB42
> 27/9 (Fri) @ 10:30:Katja Poppenhaeger (Potsdam)
>
> All welcome! Alexis Brandeker (Astronomy seminar organiser 2019)
>