THE DISRUPTION OF GIANT MOLECULAR CLOUDS BY RADIATION PRESSURE & THE EFFICIENCY OF STAR FORMATION IN GALAXIES

@article{Murray2009THEDO,
  title={THE DISRUPTION OF GIANT MOLECULAR CLOUDS BY RADIATION PRESSURE \& THE EFFICIENCY OF STAR FORMATION IN GALAXIES},
  author={Norman W. Murray and Eliot Quataert and Todd A. Thompson},
  journal={The Astrophysical Journal},
  year={2009},
  volume={709},
  pages={191 - 209}
}
Star formation is slow in the sense that the gas consumption time is much longer than the dynamical time. It is also inefficient; star formation in local galaxies takes place in giant molecular clouds (GMCs), but the fraction of a GMC converted to stars is very small, ϵGMC ∼ 5%. In luminous starbursts, the GMC lifetime is shorter than the main-sequence lifetime of even the most massive stars, so that supernovae can play no role in GMC disruption. We investigate the disruption of GMCs across a… 
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References

SHOWING 1-10 OF 102 REFERENCES
Slow Star Formation in Dense Gas: Evidence and Implications
It has been known for more than 30 years that star formation in giant molecular clouds (GMCs) is slow, in the sense that only ~1% of the gas forms stars every free-fall time. This result is entirely
THE STAR FORMATION LAW IN ATOMIC AND MOLECULAR GAS
We propose a simple theoretical model for star formation in which the local star formation rate (SFR) in a galaxy is determined by three factors. First, the interplay between the interstellar
Efficiencies of Low-Mass Star and Star Cluster Formation
Using a quantitative model for bipolar outflows driven by hydromagnetic protostellar winds, we calculate the efficiency of star formation assuming that available gas is either converted into stars or
The Star Formation Law in Galactic Disks
Measurements of the distribution of H-alpha emission in galaxies are combined with published H I and CO data in order to reassess the dependence of the massive star formation rate (SFR) on the
The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively
We measure the star formation efficiency (SFE), the star formation rate (SFR) per unit of gas, in 23 nearby galaxies and compare it with expectations from proposed star formation laws and thresholds.
Magnetic Fields in Starburst Galaxies and the Origin of the FIR-Radio Correlation
We estimate minimum energy magnetic fields (Bmin) for a sample of galaxies with measured gas surface densities, spanning more than four orders of magnitude in surface density, from normal spirals to
The Global Evolution of Giant Molecular Clouds. I. Model Formulation and Quasi-Equilibrium Behavior
We present semianalytic dynamical models for giant molecular clouds evolving under the influence of H II regions launched by newborn star clusters. In contrast to previous work, we neither assume
From Rings to Bulges: Evidence for Rapid Secular Galaxy Evolution at z ~ 2 from Integral Field Spectroscopy in the SINS Survey
We present Hα integral field spectroscopy of well-resolved, UV/optically selected z ∼ 2 star-forming galaxies as part of the SINS survey with SINFONI on the ESO VLT. Our laser guide star adaptive
STARBURST AND AGN CONNECTIONS AND MODELS
There is accumulating evidence for a strong link between nuclear starbursts and AGN. Molecular gas in the central regions of galaxies plays a critical role in fueling nuclear starburst activity and
M82, Starbursts, Star Clusters, and the Formation of Globular Clusters
We observed the nearby starburst galaxy M82 in CO in the higher frequency (2-1) transition to achieve an angular resolution below 1'' or 17 pc at the target. We resolved the molecular gas into a
...
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