Conveners
The Smallest Scales of Star Formation
- Daniela Calzetti (UMASS)
- Angela Adamo (Stockholm University)
- Arjan Bik (Stockholm University)
Ralf Klessen
(Heidelberg University, Center for Astronomy)
22/08/2016, 09:45
Stars and star clusters are the fundamental visible building blocks of galaxies at
present days as well as in the early universe. They form by gravitational collapse in
regions of high density in the complex multi-phase interstellar medium (ISM). The
process of stellar birth is controlled by the intricate interplay between the
self-gravity of the star-forming gas and various opposing...
Steve Longmore
(Liverpool John Moore University)
22/08/2016, 11:15
The formation environment of stars in massive, dense stellar
clusters is similar to the environment of stars forming in
galaxies at a redshift of 1 - 3, at the peak star formation
rate density of the Universe. As massive clusters are still
forming at the present day at a fraction of the distance to
high-redshift galaxies they offer an opportunity to
understand the processes controlling...
Alex Hygate
(Max Planck Institute of Astronomy (MPIA)/Astronomisches Rechen-Institut, University of Heidelberg (ARI/ZAH), Heidelberg, Germany)
22/08/2016, 12:00
In this contribution, I will discuss a new method of observationally measuring the
key quantities describing the cloud-scale physics of star formation and feedback,
such as the cloud lifetime, feedback timescale, star formation efficiency, mass
loading factor, etc. (Kruijssen & Longmore, 2014). This method for the first time
allows us to probe these physics over a large galaxy sample and...
Paul Clark
(Cardiff University)
22/08/2016, 12:20
The timescale over which GMCs form and disperse sets the timescale for star
formation. Until recently, most observational studies of GMCs have focused on the
molecular tracers, which are good probe of the cool interiors of the clouds, but have a
limited ability to trace the dynamics of the transition to the warm neutral medium
(WNM). In this study, we assess the ability of [CII]...
Daniel Haydon
(Astronomisches Rechen-Institut, University of Heidelberg (ARI/ZAH), Germany)
22/08/2016, 12:40
A major problem in star/cluster formation and feedback is to constrain the
cloud-scale physics across galactic environment and cosmic time. A promising solution
has been put forward by Kruijssen & Longmore (2014), who present a statistical method
for measuring ill-constrained cloud-scale quantities such as the cloud lifetime, star
formation / feedback time-scales, star formation...
Diederik Kruijssen
(Heidelberg University (ARI/ZAH))
22/08/2016, 14:30
Stellar clusters are a fundamental (by)product of the
galactic-scale star formation process. I will discuss how
recent theoretical insights in cluster formation and
evolution have led to a unified understanding of stellar
clustering across cosmic time, from local open clusters and
associations to old globular cluster populations. I will
conclude by discussing our recent work on the...
Kathryn Grasha
(University of Massachusetts)
22/08/2016, 15:35
A turbulent interstellar medium will drive the hierarchical nature of star formation, resulting in a
smoothly varying distribution of substructure, where bound star clusters occupy the smallest,
densest regions. We use young stellar clusters to trace the unbound hierarchical star-forming
structures for several nearby galaxies drawn from the Legacy ExtraGalactic UV Survey (LEGUS).
We...
Matteo Messa
(Stockholm University)
22/08/2016, 16:25
While star formation has been long studied on the
single-star scale and on the galaxy scale, the link between
these two widely separated scales still needs to be firmly
established. We use the new high-resolution NUV and U band
HST observations from LEGUS (Legacy Extra Galactic UV
Survey) to study the nearby interacting spiral galaxy M51 at
the intermediate scale of the star cluster...
Jay Gallagher
(Dept of Astronomy, University of Wisconsin-Madison)
22/08/2016, 16:45
This talk will briefly review patterns of star formation in
NGC 1275, the brightest galaxy in the Perseus cluster. NGC
1275 is of special interest as it contains examples of
unusual modes of star formation in a complex environment.
Young massive star clusters detected via HST UV imaging are
associated with gaseous filaments that
are arrayed over 10s of kpc around the center of the...
