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Interaction of massive stars with gas clouds in the Milky Way

From shooting stars to breaking bubbles
PhD ceremony:U. (Ümit) Kavak
When:December 03, 2021
Supervisors:prof. dr. F.F.S. (Floris) van der Tak, prof. dr. Tielens, A.G.G.M.
Where:Academy building RUG
Faculty:Science and Engineering

As astronomers, we know that massive stars, or stars with a mass more than 8 Solar-masses, have a series of impacts on their natal star-forming regions via stellar feedback. My thesis examines the formation of massive stars and their impact on the surrounding gas environment. This is accomplished by the integration of data ranging from radio to infrared wavelengths, as well as radiative and chemical models.

The thesis begins with high angular resolution observation of massive star-forming regions. To characterize the initial phases of massive star formation, we look for radio jets, a common phenomenon in low-mass, a star less than 8 Solar-masses, star forming regions. The remainder of this thesis analyzes the density of surface of a molecular cloud adjacent to a massive star, as well as the influence of protostellar feedback via jets/outflows on the dynamics of the ionization front in the Orion Nebula, the nearest massive star formation region to Earth.