Conveners
Global Properties at Low and High Redshifts (continuation)
- Dawn Erb (University of Wisconsin Milwaukee)
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Andrew Battisti (UMass Amherst)26/08/2016, 09:00The presence of dust in galaxies can significantly alter their observed spectral energy distribution. If not properly accounted for, this effect can lead to incorrect values of derived physical quantities such as the star formation rate, stellar mass, and photometric redshift. Virtually all studies of star forming galaxies, both local and distant, make use the attenuation curve derived...Go to contribution page
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Anna Cibinel (Astronomy Centre, U. of Sussex)26/08/2016, 09:20Key aspects of galaxy evolution including bulge formation and quenching may be regulated by the dynamics of large star forming clumps which are almost ubiquitous in the gas-rich ISM medium of normal high redshift galaxies. The impact of clump-driven dynamical processes on the evolution of galaxies depends crucially on whether these giant clumps are transient phenomena or not. Clump...Go to contribution page
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Lea Hagen (Penn State University)26/08/2016, 09:40The Swift Ultraviolet/Optical Telescope (UVOT) is uniquely suited to study star formation and dust extinction in nearby galaxies. I will discuss results from the Small Magellanic Cloud (SMC) and M33, for which we have unprecedented observations in three near-UV bands from 1700-3000 A at 2.5" resolution. We combine our UV imaging with archival optical and infrared data to model the...Go to contribution page
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Matthew Hayes (Stockholm University)26/08/2016, 10:00I will present the first image of an individual extragalactic object in which the coronal gas phase (T ~300,000 K) is both isolated and spatially resolved, by targeting the O VI doublet at 1032,1037 Å in emission. The combination of HST UV imaging and spectroscopy provides unique new insights into the mass, cooling, kinematics, and ultimately the fate of gas that has been heated by...Go to contribution page
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Jennifer Schober (Nordita)26/08/2016, 11:00Magnetic fields are omnipresent in local galaxies and can affect the star formation process crucially. Observational evidence between the coupling of the magnetic field and the star formation rate (SFR) comes from the far-infrared(FIR)-radio correlation which holds over more than six orders of magnitude. While the FIR radiation is a tracer of the SFR, radio emission is typically...Go to contribution page
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Polychronis Papaderos (Instituto de Astrofísica e Ciências do Espaço, Centro de Astrofísica da Universidade do Porto)26/08/2016, 11:20Despite significant progress over the past decades, all state-of-the-art population spectral synthesis (pss) codes suffer from two major conceptual deficiencies that limit their potential of gaining sharp insights into the star formation history (SFH) of star-forming (SF) galaxies and potentially introduce substantial biases in studies of their physical properties (e.g., stellar mass and...Go to contribution page
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Jens Melinder26/08/2016, 11:40The Lyman apha reference sample (LARS) is a major multiwavelength imaging and spectroscopic campaign of local normal star-forming galaxies, UV-luminous starburst systems, and luminous infrared galaxies using HST and ground-based telescopes. The aim of this survey is to probe what physical conditions and processes regulate the emission of Lyα radiation on local and global galactic scales....Go to contribution page
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Daniela Calzetti (UMASS)26/08/2016, 13:30Using recent 1.1 mm maps of the dust continuum of NGC4449 obtained with the Large Millimiter Telescope (LMT), we derive a high-angular resolution map of the gas in this nearby dwarf starburst galaxy. We combine the gas map with star formation rate tracers at optical and infrared wavelengths, and investigate the SFR-gas relation at ~250 parsec resolution.Go to contribution page
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Thøger Emil Rivera-Thorsen (Stockholm University)26/08/2016, 13:50The ISM of starburst galaxies is well known to contain a wide variety of physical conditions and be kinematically complex. Yet, when describing it spectroscopically, a single number is often relied on to characterize each physical property, derived from data integrated over the entire slit. Here, we present a highly detailed spatial and kinematic decomposition of 2D spectra of three...Go to contribution page
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Johannes Puschnig (Stockholm University)26/08/2016, 14:10Carbon Monoxide has proven to be a well-calibrated tracer of the total molecular gas content in galaxies at low and high redshift. However, CO observations in galaxies of subsolar metallicity remain challenging, even in the local universe. For that reason, the dust mass is often used to infer the molecular gas in low metallicity systems. I will present first results of CO and dust...Go to contribution page