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| Paper: |
Star Formation Histories and Stellar Mass Growth out to z > 1 |
| Volume: |
419, Galaxy Evolution: Emerging Insights and Future Challenges |
| Page: |
298 |
| Authors: |
Noeske, K. G. |
| Abstract: |
The deepest multi-wavelength surveys now provide measurements of star formation in galaxies out to z > 1, and allow to reconstruct its history for large parts of the galaxy population. I review recent studies, which have consistently revealed a picture where galaxy star formation rates and their evolution are primarily determined by galaxy mass. Unless they undergo a quenching of their star formation, galaxies of similar masses have very similar star formation histories, which turn out to be relatively smooth: star formation rates decline with redshift in a primarily gradual manner, while typical starburst episodes have only a modest amplitude that barely evolves.
I discuss how the found relations and their redshift evolution can provide
an observed reference star formation history as a function of galaxy mass.
The observed amplitudes and timescales of galaxy star formation are not
fully reproduced by current theoretical models, and are a promising testbed to
improve the assumed baryon physics. However, measurements of star formation
rates in distant galaxies need to be treated with caution. Near-future data,
methods and instruments will help us to improve on calibrations and sensitivities
for high redshift star formation. |
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