When the Milky Way turned off the lights: APOGEE provides evidence of star formation quenching in our Galaxy

@article{Haywood2016WhenTM,
title={When the Milky Way turned off the lights: APOGEE provides evidence of star formation quenching in our Galaxy},
author={M. Haywood and Matthew D. Lehnert and P. Di Matteo and Owain N. Snaith and Mathias Schultheis and David Katz and Ana E. G{\'o}mez},
journal={arXiv: Astrophysics of Galaxies},
year={2016}
}
• Published 12 January 2016
• Physics
• arXiv: Astrophysics of Galaxies
Quenching, the cessation of star formation, is one of the most significant events in the life cycle of galaxies. We show here the first evidence that the Milky Way experienced a generalised quenching of its star formation at the end of its thick disk formation $\sim$9 Gyr ago. Elemental abundances of stars studied as part of the APOGEE survey reveal indeed that in less than $\sim$2 Gyr the star formation rate in our Galaxy dropped by an order-of-magnitude. Because of the tight correlation…

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References

SHOWING 1-10 OF 118 REFERENCES

• Physics, Geology
• 2014
We report the first robust measurement of the Milky Way star formation history using the imprint left on chemical abundances of long-lived stars. The formation of the Galactic thick disk occurs
• Physics
• 2014
We compare the star formation history and dynamics of the Milky Way (MW) with the properties of distant disk galaxies. During the first ∼4 Gyr of its evolution, the MW formed stars with a high star
• Physics
• 2014
We develop a chemical evolution model in order to study the star formation history of the Milky Way. Our model assumes that the Milky Way is formed from a closed box-like system in the inner regions,
Observations of newly formed white dwarf stars in the halo of the Milky Way are reported and a mathematical relation is developed that links this final stellar mass to the mass of their immediate progenitors, and therefore to the age of the parent population.
• Physics
• 2015
We analyze the chemical properties of a set of solar vicinity stars, and show that the small dispersion in abundances of -elements at all ages provides evidence that the star formation history (SFH)
• Physics
• 2013
Galaxies with the mass of the Milky Way dominate the stellar mass density of the universe but it is uncertain how and when they were assembled. Here we study progenitors of these galaxies out to z =
High-resolution spectroscopic observations of about 150 nearby stars or star systems are presented and discussed. The study of these and another 100 objects of the previous papers of this series
• Physics
• 2011
Upcoming next generation galactic surveys, such as Gaia and HERMES, will deliver unprecedented detail about the structure and make-up of our Galaxy, the Milky Way, and promise to radically improve
• Physics
• 2009
We point out a natural mechanism for quenching of star formation in early-type galaxies (ETGs). It automatically links the color of a galaxy with its morphology and does not require gas consumption,
• Physics
• 2011
Isotope ratios have opened a new window into the study of the details of stellar evolution, supernovae, and galactic chemical evolution. We present the evolution of the isotope ratios of elemental