Conveners
Star Formation and Feedback
- Matthew Hayes (Stockholm University)
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Anne Jaskot (Smith College)24/08/2016, 09:00Although few in number, massive stars play an outsize role in reshaping their local and global environments. Using observations of starburst regions in low-redshift galaxies, I will highlight the importance of Wolf-Rayet stellar winds, binary stellar populations, supernovae, and geometry in clearing out neutral gas from star-forming environments. This feedback from sub-galactic scales...Go to contribution page
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Chang-Goo Kim (Princeton University)24/08/2016, 09:45Supernova (SN) explosions inject a prodigious amount of energy into the interstellar medium (ISM). This powerful feedback implies that SNe are a major driver of turbulence and galactic winds, and may be the dominant regulator of star formation (SF) in disk galaxies. Our understanding of the interaction of SN(e) with the ISM have gradually improved over many decades. However, a complete and...Go to contribution page
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Ben Keller (McMaster University)24/08/2016, 10:30M* galaxies, with halo masses ~10^12 Msun, live in an interesting part of parameter space. Not only are they the "turnover" in the galaxy mass Schecter function, they also have the highest stellar mass (and baryon) fraction, very low bulge-to-disk ratios, and dominate the star formation of the epoch they live in. In this talk I will present the results of a sample of 18 cosmological M*...Go to contribution page
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Arjan Bik (Stockholm University)24/08/2016, 11:20The feedback of massive stars and star clusters has a dramatic effect on the surrounding interstellar matter (ISM), affecting the shape and fate of galaxies as a whole. The molecular ISM in which the stars are formed is transformed to a warm ionized medium by means of the Lyman continuum output as well as the stellar wind and supernovae of the massive stars in the galaxy. The large...Go to contribution page
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Katherine HOLLYHEAD (Astrophysics Research Institute)24/08/2016, 11:40The initial stages of star cluster formation (the first 10 Myr) are still not entirely clear, though this age is highly important for understanding their subsequent evolution and that of the galaxy itself. We have studied a sample of young massive clusters (<10 Myr, >5000 solar masses) in nearby spiral galaxy M83, using archival HST WFC3 data available on the HST Legacy Archive. By...Go to contribution page
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Peter Creasey (University of California at Riverside (UCR))24/08/2016, 12:00The mechanisms of feedback in which Milky-Way and smaller galaxies are regulated by events on scales of parsecs and below is still poorly understood. In this talk I will look at hydrodynamical simulations on cosmological and interstellar medium scales and tease out some of the dynamical and chemical indicators at small and large (galaxy population) scales that can be used to identify the...Go to contribution page
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Robbert Verbeke (Ghent University)24/08/2016, 12:20Dwarf galaxies occupy the faint end of the galaxy mass function and their properties are often regarded as strong tests for cosmological and galaxy evolution models. Indeed, their shallow gravitational potential makes them very susceptible to both external and internal processes, such as ram-pressure stripping and supernova feedback. Using computer simulations, the effects of such...Go to contribution page
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Evangelia Ntormousi (CEA/Saclay)24/08/2016, 12:40The large-scale shocks formed by the clustered feedback of young stars are considered an important source of mechanical energy for the interstellar medium and a trigger of molecular cloud formation. Their interaction sites are locations where kinetic energy and magnetic field are redistributed between ISM phases. In this work we study the role of turbulence and magnetic fields in the...Go to contribution page
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Wako Ishibashi (ETH Zurich)24/08/2016, 13:00Black hole feedback is often invoked to suppress star formation in galaxies by driving galaxy-scale outflows. However, radiative feedback from the central black hole may actually trigger star formation within those galactic outflows. In our picture, new stars are formed at increasingly larger radii in the outflowing shell, with young stellar populations gradually populating the outer...Go to contribution page