Conveners
Global Properties at Low and High Redshifts (continuation)
- Dawn Erb (University of Wisconsin Milwaukee)
Andrew Battisti
(UMass Amherst)
26/08/2016, 09:00
The 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...
Anna Cibinel
(Astronomy Centre, U. of Sussex)
26/08/2016, 09:20
Key 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...
Lea Hagen
(Penn State University)
26/08/2016, 09:40
The 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...
Matthew Hayes
(Stockholm University)
26/08/2016, 10:00
I 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...
Jennifer Schober
(Nordita)
26/08/2016, 11:00
Magnetic 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...
Polychronis Papaderos
(Instituto de Astrofísica e Ciências do Espaço, Centro de Astrofísica da Universidade do Porto)
26/08/2016, 11:20
Despite 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...
Daniela Calzetti
(UMASS)
26/08/2016, 13:30
Using 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.
Thøger Emil Rivera-Thorsen
(Stockholm University)
26/08/2016, 13:50
The 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...
Johannes Puschnig
(Stockholm University)
26/08/2016, 14:10
Carbon 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...
