Conveners
From Clouds to Disks
- Rob Kennicutt (University of Cambridge)
- John Gallagher (University of Wisconsin-Madison)
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Amanda Heiderman (University of Virginia)23/08/2016, 09:00
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Oscar Agertz (University of Surrey)23/08/2016, 09:45I will review recent advances in sub-galactic scale modelling of star formation, with a particular emphasize on the interplay between star formation and stellar feedback and how this impacts galaxy formation and evolution over cosmic time.Go to contribution page
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Andreas Schruba (Max-Planck-Institut für extraterrestrische Physik)23/08/2016, 11:00State-of-the-art instrumentation is currently revolutionizing our view on the gas-star cycle in nearby galaxies by resolving individual star-forming clouds and their young stellar population. I will highlight recent results from several concerted legacy-type surveys targeting galaxies in the Local Group and Local Universe. This includes (a) the structure of the atomic and molecular gas...Go to contribution page
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Nimisha Kumari (Institute of Astronomy, Cambridge, United Kingdom)23/08/2016, 11:20The Kennicutt-Schmidt law relating the surface densities of the star-formation rate (SFR) and gas (atomic and molecular) is a widely-accepted star-formation law. However, it is a disk-averaged law smoothing over local variations, and hence may not provide an explanation for the local relationship between SFR and gas density at the sub-galactic scale. To further probe this, various groups...Go to contribution page
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Sarah Ragan (University of Leeds)23/08/2016, 11:40In the era of multi-wavelength surveys of the Milky Way, we are well-equipped to observationally characterise the conditions necessary for star formation on parsec size-scales. With this wealth of information, we can now not only ask the question of what these conditions are, but also why they arise where they do. I employ the Herschel Galactic Plane survey (Hi-GAL) to study the connection...Go to contribution page
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Camilo Penaloza (Cardiff University)23/08/2016, 12:00Over the past decade, there has been a move to better connect observations with numerical simulations. In this work we focus on mimicking the CO emission for simulated Giant Molecular Clouds (GMCs). We performed a set of smooth particle hydrodynamics (SPH) simulations with time-dependent chemistry, in which environmental conditions such as mass, density, size, metallicity and Interstellar...Go to contribution page
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Karl Schuster23/08/2016, 12:20M33 was mapped in the CO 2-1 transition with a resolution of 50 pc. The IRAM M33 mapping project covers a complete area out to galactic radii of 7 kpc. Combining these data with HI and and FIR dust measurements on similar scales allows to extend the method used by Sandstroem 2011 by introducing an additional local CO dark molecular gas column density. We discuss potential influence of...Go to contribution page
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Francoise Combes (Observatoire de Paris, LERMA)23/08/2016, 14:30Beyond the observed proportionality between surface densities of molecular gas and star formation, the efficiency of star formation varies significantly with environment. I will review the situations where the star formation is triggered by dynamical processes, such as bars or spirals, tidal interactions, ram-pressure due to AGN feedback or in groups and clusters.Go to contribution page
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Alessandro Romeo (Chalmers University of Technology)23/08/2016, 15:15Gravitational instabilities play a primary role in shaping the structure and powering the star formation activity of disc galaxies. We review the effort made by theorists to provide the astronomical community with reliable disc stability diagnostics. The most well-known diagnostic is Toomre's Q parameter, but there are newer and more powerful tools for detecting gravitational...Go to contribution page
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Jose Utreras (Universidad de Chile)23/08/2016, 15:45Knowing how efficiently stars are formed in galaxies is fundamental to understand the evolution of our universe. Unfortunately, several physical processes governing star formation are dynamically coupled in the non-linear regime, complicating the study of their independent effects. Here we use numerical experiments to study the effects of galactic rotation, employing the Adaptive Mesh...Go to contribution page
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Mark Sargent23/08/2016, 16:35The bimodal distribution of galaxy-integrated star-formation efficiencies (SFE) in the Schmidt-Kennicutt plane (i.e. the SFR vs. M(H2) diagram) has been the subject of much debate in recent years. Is the proposed split into a ‘sequence of disks’ and a ‘sequence of starbursts’ a genuine effect or rather an artefact of selection effects or assumptions underlying the calculation of molecular...Go to contribution page