Conveners
Star Formation and Feedback
- Matthew Hayes (Stockholm University)
Anne Jaskot
(Smith College)
24/08/2016, 09:00
Although 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...
Chang-Goo Kim
(Princeton University)
24/08/2016, 09:45
Supernova (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...
Ben Keller
(McMaster University)
24/08/2016, 10:30
M* 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*...
Arjan Bik
(Stockholm University)
24/08/2016, 11:20
The 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...
Katherine HOLLYHEAD
(Astrophysics Research Institute)
24/08/2016, 11:40
The 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...
Peter Creasey
(University of California at Riverside (UCR))
24/08/2016, 12:00
The 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...
Robbert Verbeke
(Ghent University)
24/08/2016, 12:20
Dwarf 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...
Evangelia Ntormousi
(CEA/Saclay)
24/08/2016, 12:40
The 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...
Wako Ishibashi
(ETH Zurich)
24/08/2016, 13:00
Black 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...
