The Experts below are selected from a list of 6846 Experts worldwide ranked by ideXlab platform
Rosdahl Joakim - One of the best experts on this subject based on the ideXlab platform.
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EDGE: from quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies (105≤M⋆≤106M⊙), using cosmological high-resolution (3pc) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of 3×109M⊙ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of 10−5M⊙yr−1, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small (0.2dex) increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Read Justin, Orkney, Matthew D.a., Rosdahl JoakimAbstract:International audienceWe study how star formation is regulated in low-mass field dwarf galaxies (|$10^5 \le M_{\star } \le 10^6 \, \mbox{M}_\mathrm{\odot }$|), using cosmological high-resolution (|$3 \, \mathrm{pc}$|) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of |$3 \times 10^{9} \, \mbox{M}_\mathrm{\odot }$| are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of |$10^{-5} \, \mbox{M}_\mathrm{\odot } \, \text{yr}^{-1}$|, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small |$(0.2\, \mathrm{dex})$| increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies ($10^5 \leq M_{\star} \leq 10^6 \, \text{M}_{\odot}$), using cosmological high-resolution ($3 \, \text{pc}$) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of $3 \times 10^{9} \,\text{M}_{\odot}$ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies re-ignite and sustain star formation until the present day at an average rate of $10^{-5} \, \text{M}_{\odot} \, \text{yr}^{-1}$, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at $z=0$, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the "genetic modification'' approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small $(0.2\,\mathrm{dex})$ increase in dynamical mass can overcome residual stellar feedback, re-igniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation HI and imaging surveys.Comment: Minor revisions, matching published version in MNRAS. Results and conclusions unchange
Michael Woodford - One of the best experts on this subject based on the ideXlab platform.
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macroeconomic analysis without the rational expectations hypothesis
Annual Review of Economics, 2013Co-Authors: Michael WoodfordAbstract:The article presents a Temporary Equilibrium framework for macroeconomic analysis that allows for a wide range of possible specifications of expectations but reduces to a standard new Keynesian model in the limiting case of rational expectations. This common framework is then used to contrast the assumptions and implications of several different ways of relaxing the assumption of rational expectations. As an illustration of the method, the implications of alternative assumptions for the selection of a monetary policy rule are discussed. Other issues treated include the conditions required for Ricardian equivalence and for existence of a deflation trap.
Rey, Martin P - One of the best experts on this subject based on the ideXlab platform.
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EDGE: from quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies (105≤M⋆≤106M⊙), using cosmological high-resolution (3pc) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of 3×109M⊙ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of 10−5M⊙yr−1, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small (0.2dex) increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Read Justin, Orkney, Matthew D.a., Rosdahl JoakimAbstract:International audienceWe study how star formation is regulated in low-mass field dwarf galaxies (|$10^5 \le M_{\star } \le 10^6 \, \mbox{M}_\mathrm{\odot }$|), using cosmological high-resolution (|$3 \, \mathrm{pc}$|) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of |$3 \times 10^{9} \, \mbox{M}_\mathrm{\odot }$| are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of |$10^{-5} \, \mbox{M}_\mathrm{\odot } \, \text{yr}^{-1}$|, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small |$(0.2\, \mathrm{dex})$| increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies ($10^5 \leq M_{\star} \leq 10^6 \, \text{M}_{\odot}$), using cosmological high-resolution ($3 \, \text{pc}$) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of $3 \times 10^{9} \,\text{M}_{\odot}$ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies re-ignite and sustain star formation until the present day at an average rate of $10^{-5} \, \text{M}_{\odot} \, \text{yr}^{-1}$, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at $z=0$, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the "genetic modification'' approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small $(0.2\,\mathrm{dex})$ increase in dynamical mass can overcome residual stellar feedback, re-igniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation HI and imaging surveys.Comment: Minor revisions, matching published version in MNRAS. Results and conclusions unchange
Pontzen Andrew - One of the best experts on this subject based on the ideXlab platform.
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EDGE: from quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies (105≤M⋆≤106M⊙), using cosmological high-resolution (3pc) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of 3×109M⊙ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of 10−5M⊙yr−1, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small (0.2dex) increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Read Justin, Orkney, Matthew D.a., Rosdahl JoakimAbstract:International audienceWe study how star formation is regulated in low-mass field dwarf galaxies (|$10^5 \le M_{\star } \le 10^6 \, \mbox{M}_\mathrm{\odot }$|), using cosmological high-resolution (|$3 \, \mathrm{pc}$|) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of |$3 \times 10^{9} \, \mbox{M}_\mathrm{\odot }$| are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of |$10^{-5} \, \mbox{M}_\mathrm{\odot } \, \text{yr}^{-1}$|, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small |$(0.2\, \mathrm{dex})$| increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies ($10^5 \leq M_{\star} \leq 10^6 \, \text{M}_{\odot}$), using cosmological high-resolution ($3 \, \text{pc}$) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of $3 \times 10^{9} \,\text{M}_{\odot}$ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies re-ignite and sustain star formation until the present day at an average rate of $10^{-5} \, \text{M}_{\odot} \, \text{yr}^{-1}$, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at $z=0$, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the "genetic modification'' approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small $(0.2\,\mathrm{dex})$ increase in dynamical mass can overcome residual stellar feedback, re-igniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation HI and imaging surveys.Comment: Minor revisions, matching published version in MNRAS. Results and conclusions unchange
Agertz Oscar - One of the best experts on this subject based on the ideXlab platform.
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EDGE: from quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies (105≤M⋆≤106M⊙), using cosmological high-resolution (3pc) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of 3×109M⊙ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of 10−5M⊙yr−1, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small (0.2dex) increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Read Justin, Orkney, Matthew D.a., Rosdahl JoakimAbstract:International audienceWe study how star formation is regulated in low-mass field dwarf galaxies (|$10^5 \le M_{\star } \le 10^6 \, \mbox{M}_\mathrm{\odot }$|), using cosmological high-resolution (|$3 \, \mathrm{pc}$|) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of |$3 \times 10^{9} \, \mbox{M}_\mathrm{\odot }$| are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies reignite and sustain star formation until the present day at an average rate of |$10^{-5} \, \mbox{M}_\mathrm{\odot } \, \text{yr}^{-1}$|, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at z = 0, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the ‘genetic modification’ approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small |$(0.2\, \mathrm{dex})$| increase in dynamical mass can overcome residual stellar feedback, reigniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation H i and imaging surveys
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EDGE: From quiescent to gas-rich to star-forming low-mass dwarf galaxies
'Oxford University Press (OUP)', 2020Co-Authors: Rey, Martin P, Pontzen Andrew, Agertz Oscar, Orkney, Matthew D A, Read Justin, Rosdahl JoakimAbstract:We study how star formation is regulated in low-mass field dwarf galaxies ($10^5 \leq M_{\star} \leq 10^6 \, \text{M}_{\odot}$), using cosmological high-resolution ($3 \, \text{pc}$) hydrodynamical simulations. Cosmic reionization quenches star formation in all our simulated dwarfs, but three galaxies with final dynamical masses of $3 \times 10^{9} \,\text{M}_{\odot}$ are subsequently able to replenish their interstellar medium by slowly accreting gas. Two of these galaxies re-ignite and sustain star formation until the present day at an average rate of $10^{-5} \, \text{M}_{\odot} \, \text{yr}^{-1}$, highly reminiscent of observed low-mass star-forming dwarf irregulars such as Leo T. The resumption of star formation is delayed by several billion years due to residual feedback from stellar winds and Type Ia supernovae; even at $z=0$, the third galaxy remains in a Temporary Equilibrium with a large gas content but without any ongoing star formation. Using the "genetic modification'' approach, we create an alternative mass growth history for this gas-rich quiescent dwarf and show how a small $(0.2\,\mathrm{dex})$ increase in dynamical mass can overcome residual stellar feedback, re-igniting star formation. The interaction between feedback and mass build-up produces a diversity in the stellar ages and gas content of low-mass dwarfs, which will be probed by combining next-generation HI and imaging surveys.Comment: Minor revisions, matching published version in MNRAS. Results and conclusions unchange
