Search Results - "BOURNAUD, Frederic"
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Rapid Formation of Exponential Disks and Bulges at High Redshift from the Dynamical Evolution of Clump-Cluster and Chain Galaxies
Published in The Astrophysical journal (20-11-2007)“…Many galaxies at high redshift have peculiar morphologies dominated by 10 super(8)-10 super(9) M [unk] kpc-sized clumps. Using numerical simulations, we show…”
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Submillimetre compactness as a critical dimension to understand the main sequence of star-forming galaxies
Published in Monthly notices of the Royal Astronomical Society (01-12-2021)“…ABSTRACT We study the interstellar medium (ISM) properties as a function of the molecular gas size for 77 infrared-selected galaxies at z ∼ 1.3, having stellar…”
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The global star formation law by supernova feedback
Published in Monthly notices of the Royal Astronomical Society (01-10-2019)“…ABSTRACT We address a simple model where the Kennicutt–Schmidt (KS) relation between the macroscopic densities of star formation rate (SFR, ρsfr) and gas (n)…”
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Beyond the nuclear starburst? Clustered star formation in major mergers
Published in Monthly notices of the Royal Astronomical Society (11-09-2013)“…Recent simulation work has successfully captured the formation of the star clusters that have been observed in merging galaxies. These studies, however, tend…”
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Tidal Dwarf Galaxies and Missing Baryons
Published in Advances in astronomy (01-01-2010)“…Tidal dwarf galaxies form during the interaction, collision, or merger of massive spiral galaxies. They can resemble “normal” dwarf galaxies in terms of mass,…”
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Tidal Debris from High-Velocity Collisions as Fake Dark Galaxies: A Numerical Model of VIRGOHI 21
Published in The Astrophysical journal (01-02-2008)“…High-speed collisions, although current in clusters of galaxies, have long been neglected, as they are believed to cause little damages to galaxies except when…”
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A titanic interstellar medium ejection from a massive starburst galaxy at redshift 1.4
Published in Nature astronomy (01-03-2021)“…Feedback-driven winds from star formation or active galactic nuclei might be a relevant channel for the abrupt quenching of star formation in massive galaxies…”
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Active galactic nuclei-driven outflows without immediate quenching in simulations of high-redshift disc galaxies
Published in Monthly notices of the Royal Astronomical Society (21-06-2014)“…We study outflows driven by active galactic nuclei (AGNs) using high-resolution simulations of idealized z ∼ 2 isolated disc galaxies. Episodic accretion…”
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A parsec-resolution simulation of the Antennae galaxies: formation of star clusters during the merger
Published in Monthly notices of the Royal Astronomical Society (11-01-2015)“…We present a hydrodynamical simulation of an Antennae-like galaxy merger at parsec resolution, including a multicomponent model for stellar feedback and…”
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The role of gas fraction and feedback in the stability and evolution of galactic discs: implications for cosmological galaxy formation models
Published in Monthly notices of the Royal Astronomical Society (01-08-2021)“…ABSTRACT High-redshift star-forming galaxies often have irregular morphologies with giant clumps containing up to 108−109 solar masses of gas and stars. The…”
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Simulations of supermassive black hole growth in high-redshift disc galaxies
Published in Monthly notices of the Royal Astronomical Society (01-09-2013)“…Observations suggest that a large fraction of black hole growth occurs in normal star-forming disc galaxies. Here we describe simulations of black hole…”
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THE TWO-PHASE FORMATION HISTORY OF SPIRAL GALAXIES TRACED BY THE COSMIC EVOLUTION OF THE BAR FRACTION
Published in The Astrophysical journal (20-09-2012)“…We study the evolution of galactic bars and the link with disk and spheroid formation in a sample of zoom-in cosmological simulations. Our simulation sample…”
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The Thick Disks of Spiral Galaxies as Relics from Gas-rich, Turbulent, Clumpy Disks at High Redshift
Published in The Astrophysical journal (10-12-2009)“…The formation of thick stellar disks in spiral galaxies is studied. Simulations of gas-rich young galaxies show formation of internal clumps by gravitational…”
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Starbursts triggered by intergalactic tides andinterstellar compressive turbulence
Published in Monthly notices of the Royal Astronomical Society. Letters (21-07-2014)“…Using parsec-resolution simulations of a typical galaxy merger, we study the triggering of starbursts by connecting the (inter-)galactic dynamics to the…”
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Non-linear violent disc instability with high Toomre's Q in high-redshift clumpy disc galaxies
Published in Monthly notices of the Royal Astronomical Society (21-02-2016)“…We utilize zoom-in cosmological simulations to study the nature of violent disc instability in clumpy galaxies at high redshift, z = 1–5. Our simulated…”
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Bulge Formation by the Coalescence of Giant Clumps in Primordial Disk Galaxies
Published in The Astrophysical journal (20-11-2008)“…Gas-rich disks in the early universe are highly turbulent and have giant star-forming clumps. Models suggest that the clumps form by gravitational…”
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Unstable Disks at High Redshift: Evidence for Smooth Accretion in Galaxy Formation
Published in The Astrophysical journal (01-04-2009)“…Galaxies above redshift 1 can be very clumpy, with irregular morphologies dominated by star complexes as large as 2 kpc and as massive as a few X108 or 109 M …”
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The Properties of the Interstellar Medium of Galaxies across Time as Traced by the Neutral Atomic Carbon [C i]
Published in The Astrophysical journal (10-02-2020)“…We report Atacama Large Millimeter Array observations of the neutral atomic carbon transitions [C i] and multiple CO lines in a sample of ∼30 main-sequence…”
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A Survey of Atomic Carbon [C i] in High-redshift Main-sequence Galaxies
Published in The Astrophysical journal (10-12-2018)“…We present the first results of an Atacama Large Millimeter Array survey of the lower fine-structure line of atomic carbon [C i] in far-infrared-selected…”
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