Conveners
Star Formation Properties in The Local Universe
- Nils Bergvall (Uppsala University)
Amelie Saintonge
(University College London)
25/08/2016, 09:00
Over the past 5 years, it has become possible to assemble measurements of molecular
gas in large samples of normal star-forming galaxies up to z=2. These observations
have been key in establishing the currently favoured model for galaxy evolution,
which is centered around the cycling of gas in and out of galaxies and the efficiency
of the star formation process. While star formation is a...
Abdurrouf Abdurrouf
(Astronomical Institute, Tohoku University)
25/08/2016, 10:05
According to Lambda CDM paradigm of hierarchical galaxy formation, galactic disks
were form gradually from inside to outside (“inside-out” scenario of galaxy
formation). In spite of this being a long-known prediction, but very few
observational evidences have been brought forward to support it. In order to sought
the indication of this “inside-out” scenario in the local universe and also...
Quentin SALOME
(LERMA, Observatoire de Paris)
25/08/2016, 10:25
Recent studies suggest that AGN can regulate the gas accretion and thus slow
down star formation (negative feedback). However, evidence of AGN positive
feedback is also invoked in a few radio galaxies (eg. Centaurus A, Minkowski's
Object, 3C 285, ...).
I will present a multi-wavelength study of the northern filaments of Centaurus A.
These filaments of gas and young stars extend...
Isadora Chaves Bicalho
(Observatoire de Paris)
25/08/2016, 11:15
The spatially resolved star formation law has been studied
in great detail in galaxies in recent years. At high surface
density, when most of the gas is molecular, the
Kennicutt-Schmidt relation is almost linear providing a
constant gas consumption time-scale of about 3Gyr (e.g
Bigiel et al. 2011, Saintonge et al 2011). However the star
formation efficiency (SFE) falls very quickly when...
Rodrigo Herrera-Camus
(Max Planck Institute for Extraterrestrial Physics)
25/08/2016, 11:35
The [CII] 158 um and [NII] 122 and 205 um far-infrared
transitions are powerful tracers of the neutral and ionized
gas in the interstellar medium of local and high-z galaxies.
In this talk I will discuss the ability of these lines to
trace the star formation activity in a wide range of
environments that include low metallicity, normal,
star-forming galaxies, AGN, LIRGS and high-z...
Martin Roth
(Leibniz Institute for Astrophysics Potsdam (AIP))
25/08/2016, 11:55
We present first results from a study of resolved stellar
populations in the 2 Mpc distant sculptor group disk galaxy
NGC300 using integral field spectroscopy with MUSE. From
data cubes obtained under conditions of excellent seeing we
are able to extract on the order of 1500 stellar spectra per
pointing of 1.5 hours observing time, using the PampelMuse
code that has already...
Karen Knierman
(Arizona State University)
25/08/2016, 12:25
While major mergers and their tidal debris are well studied, equal mass galaxy
mergers are relatively rare compared to minor mergers (mass ratio <0.3).
Minor mergers are less energetic than major mergers, but more common in the
observable universe, and thus likely played a pivotal role in the formation of most
large galaxies. Tidal debris regions have large amounts of neutral gas but a...
Alton Padraig
(Durham University)
25/08/2016, 12:45
Massive elliptical galaxies are thought to form in two stages - first, the formation
of a central core via fast dissipative processes by z~2, followed by the accumulation
of mass through (mostly minor) dry mergers. A combination of evidence from
spectroscopy, lensing, and stellar dynamics appears to suggest that in the most
massive central cores stars form according to a 'bottom-heavy' IMF...
