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Astrolunch: Shmuel Bialy | The Racah Institute of Physics

Astrolunch: Shmuel Bialy

Date: 
Sun, 08/11/202017:00-18:00
 How stars form in the turbulent-multiphase interstellar medium?

I will begin with a broad review of the field of star formation and its relation to galaxy evolution pointing to some pressing open questions.
I will then dive into the star-forming interstellar medium (ISM), asking the question, which process may regulate star formation?
I will discuss the multiphase structure of the ISM, key heating-cooling and chemical processes, and interstellar turbulence, all of which may play an important role in regulating star formation.
I will focus on a particularly appealing theory for star formation where gas heating by far-UV radiation from young stars (and by cosmic-rays in some galaxies), may provide a natural feedback loop, and thus organically self-regulate star-formation in galactic disks, and present recent results (Bialy 2020, ApJ accepted) for the link between the star-formation rate and the far-UV radiation intensity.
I will conclude with future prospects: 

(1) Charting new ways for observationally constraining poorly known interstellar properties: turbulence, 3D ISM structure, supernova feedback and cosmic-rays, and (2) first steps towards constructing an improved star-formation model for next-generation large scale cosmological simulations (i.e., IllustrisTNG successors).

Zoom details
https://huji.zoom.us/j/84740565269?pwd=R2o3Vk9BUFRGZ0hzT3B6Zm9USmthQT09
Meeting ID: 847 4056 5269
Passcode: w31c0m3

Meeting recording: Here