Tidal Dwarf Galaxies and Missing Baryons (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, size, and become dwarf satellites...
Tidal Dwarf Galaxies and Missing Baryons (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, size, and become dwarf...
Martig, Marie, Bournaud, Frederic
Spiral galaxies have most of their stellar mass in a large rotating disk, and only a modest fraction in a central spheroidal bulge. This poses a major challenge for cosmological models of galaxy...
Bournaud, Frederic, Elmegreen, Bruce G., Martig, Marie
The formation of thick stellar disks in spiral galaxies is studied. Simulations of gas-rich young galaxies show formation of internal clumps by gravitational instabilities, clump coalescence into a...
Star formation and structure formation in galaxy collisions (2009)
A number of theoretical and simulation results on star and structure formation in galaxy interactions and mergers is reviewed, and recent hydrodynamic simulations are presented. The role of gravity...
Tidal Dwarf Galaxies and missing baryons (2009)
Tidal dwarf galaxies form during the interaction, collision or merger of massive spiral galaxies. They can resemble "normal" dwarf galaxies in terms of mass, size, and become dwarf satellites...
High-Redshift Clumpy Disks and Bulges in Cosmological Simulations (2009)
Ceverino, Daniel, Dekel, Avishai, Bournaud, Frederic
We analyze the first cosmological simulations that recover the fragmentation of high-redshift galactic discs driven by cold streams. The fragmentation is recovered owing to an AMR resolution better...
Morphological quenching of star formation: making early-type galaxies red (2009)
Martig, Marie, Bournaud, Frederic, Teyssier, Romain, Dekel, Avishai
We point out a natural mechanism for quenching of star formation in early-type galaxies. It automatically links the color of a galaxy with its morphology and does not require gas consumption, removal...
Molecular gas in Tidal Dwarf Galaxies: Exploring the conditions for star formation (2009)
Lisenfeld, Ute, Bournaud, Frederic, Brinks, Elias, Duc, Pierre-Alain
Tidal Dwarf Galaxies (TDGs), produced from material expelled in galactic interactions, are well--suited to test the laws of star formation (SF) due to their simple structure, high metallicity --...
Unstable disks at high redshift: Evidence for smooth accretion in galaxy formation (2009)
Bournaud, Frederic, Elmegreen, Bruce G.
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 10^8 or 10^9 Mo. Their co-moving densities and rapid...
Bulge Formation by the Coalescence of Giant Clumps in Primordial Disk Galaxies (2008)
Elmegreen, Bruce G., Bournaud, Frederic, Elmegreen, Debra Meloy
Gas-rich disks in the early universe are highly turbulent and have giant star-forming clumps. Models suggest the clumps form by gravitational instabilities, and if they resist disruption by star...
Numerical simulations of galaxy evolution in cosmological context (2008)
Martig, Marie, Bournaud, Frederic, Teyssier, Romain
Large volume cosmological simulations succeed in reproducing the large-scale structure of the Universe. However, they lack resolution and may not take into account all relevant physical processes to...
Nuclear Black Hole Formation in Clumpy Galaxies at High Redshift (2008)
Elmegreen, Bruce G., Bournaud, Frederic, Elmegreen, Debra Meloy
Massive stellar clumps in high redshift galaxies interact and migrate to the center to form a bulge and exponential disk in
Triggering of merger-induced starbursts by the tidal field of galaxy groups and clusters (2007)
Martig, Marie, Bournaud, Frederic
Star formation in galaxies is for a part driven by galaxy mergers. At low redshift, star formation activity is low in high-density environments like groups and clusters, and the star formation...
Duc, Pierre-Alain, Bournaud, Frederic
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 they are repeated, a process called...
Bournaud, Frederic, Jog, Chanda J., Combes, Francoise
Multiple, sequential mergers are unavoidable in the hierarchical build-up picture of galaxies, in particular for the minor mergers that are frequent and highly likely to have occured several times...
Tidal Debris posing as Dark Galaxies (2007)
Duc, Pierre-Alain, Bournaud, Frederic, Brinks, Elias
Debris sent into the intergalactic medium during tidal collisions can tell us about several fundamental properties of galaxies, in particular their missing mass, both in the form of cosmological Dark...
Tidal Dwarf Galaxies as Laboratories of Star Formation and Cosmology (2006)
Duc, Pierre-Alain, Bournaud, Frederic, Boquien, Mederic
Star formation may take place in a variety of locations in interacting systems: in the dense core of mergers, in the shock regions at the interface of the colliding galaxies and even within the tidal...
Evolution des galaxies:Interactions, fusions, et accretion de gaz (2006)
L'étude des propriétés actuelles des galaxies permet à la fois de comprendre les processus physiques de leur évolution passée et le contenu de l'Univers en matière visible et noire. Les moyens...
Evolution des galaxies:Interactions, fusions, et accretion de gaz (2006)
L'étude des propriétés actuelles des galaxies permet à la fois de comprendre les processus physiques de leur évolution passée et le contenu de l'Univers en matière visible et noire. Les moyens...
Evolution des galaxies:<br />Interactions, fusions, et accretion de gaz (2006)
L'étude des propriétés actuelles des galaxies permet à la fois de comprendre les processus physiques de leur évolution passée et le contenu de l'Univers en matière visible et noire. Les moyens...
Evolution des galaxies:Interactions, fusions, et accretion de gaz (2006)
L'étude des propriétés actuelles des galaxies permet à la fois de comprendre les processus physiques de leur évolution passée et le contenu de l'Univers en matière visible et noire. Les moyens...
Evolution des galaxies:Interactions, fusions, et accretion de gaz (2006)
L'étude des propriétés actuelles des galaxies permet à la fois de comprendre les processus physiques de leur évolution passée et le contenu de l'Univers en matière visible et noire. Les moyens...
Evolution des galaxies:Interactions, fusions, et accretion de gaz (2006)
L'étude des propriétés actuelles des galaxies permet à la fois de comprendre les processus physiques de leur évolution passée et le contenu de l'Univers en matière visible et noire. Les moyens...
Unequal-mass galaxy merger remnants: spiral-like morphology but elliptical-like kinematics (2005)
Bournaud, Frederic, Combes, Françoise, Jog, Chanda J.
It is generally believed that major galaxy mergers with mass ratios in the range 1:1-3:1 result in remnants that have properties similar to elliptical galaxies, and minor mergers below 10:1 result in...
Polar ring galaxies: formation and properties (2005)
Bournaud, Frederic, Combes, Françoise
Formation scenarios for polar ring galaxies are studied through N-body simulatio ns that are compared with existing observations. It is shown that polar rings ar e likely to be formed by tidal...
Block, David L., Bournaud, Frederic, Combes, Francoise, Puerari, Ivanio, Buta, Ron
The distribution of gravitational torques and bar strengths in the local Universe is derived from a detailed study of 163 galaxies observed in the near-infrared. The results are compared with...
A top-down scenario for the formation of massive Tidal Dwarf Galaxies (2004)
Duc, Pierre-Alain, Bournaud, Frederic, Masset, Frederic
Among those objects formed out of collisional debris during galaxy mergers, the prominent gaseous accumulations observed near the tip of some long tidal tails are the most likely to survive long...
Unequal-mass galaxy merger remnants: spiral-like morphology but elliptical-like kinematics (2004)
Bournaud, Frederic, Combes, Francoise, Jog, Chanda J.
It is generally believed that major galaxy mergers with mass ratios in the range 1:1-3:1 result in remnants that have properties similar to elliptical galaxies, and minor mergers below 10:1 result in...
Unequal-mass galaxy merger remnants: spiral-like morphology but elliptical-like kinematics (2004)
Bournaud, Frederic, Combes, Francoise, Jog, Chanda J
It is generally believed that major galaxy mergers with mass ratios in the range 1:1-3:1 result in remnants that have properties similar to elliptical galaxies, and minor mergers below 10:1 result in...
Identifying old Tidal Dwarf Galaxies in Simulations and in the Nearby Universe (2004)
Duc, Pierre-Alain, Bournaud, Frederic, Masset, Frederic
Most Tidal Dwarf Galaxies (TDGs) so-far discussed in the literature may be considered as young ones or even newborns, as they are still physically linked to their parent galaxies by an umbilical...
Unequal-mass galaxy merger remnants: spiral-like morphology but elliptical-like kinematics (2004)
Bournaud, Frederic, Combes, Francoise, Jog, Chanda J
It is generally believed that major galaxy mergers with mass ratios in the range 1:1-3:1 result in remnants that have properties similar to elliptical galaxies, and minor mergers below 10:1 result in...
Unequal-mass galaxy merger remnants: spiral-like morphology but elliptical-like kinematics (2004)
Bournaud, Frederic, Combes, Françoise, Jog, Chanda J.
It is generally believed that major galaxy mergers with mass ratios in the range 1:1-3:1 result in remnants that have properties similar to elliptical galaxies, and minor mergers below 10:1 result in...
Unequal-mass galaxy merger remnants: spiral-like morphology but elliptical-like kinematics (2004)
Bournaud, Frederic, Combes, Françoise, Jog, Chanda J.
It is generally believed that major galaxy mergers with mass ratios in the range 1:1-3:1 result in remnants that have properties similar to elliptical galaxies, and minor mergers below 10:1 result in...
Block, David L., Bournaud, Frederic, Combes, Francoise, Puerari, Ivanio, Buta, Ron
The distribution of gravitational torques and bar strengths in the local Universe is derived from a detailed study of 163 galaxies observed in the near-infrared. The results are compared with...
Polar ring galaxies: formation and properties (2002)
Bournaud, Frederic, Combes, Francoise
Formation scenarios for polar ring galaxies are studied through N-body simulatio ns that are compared with existing observations. It is shown that polar rings ar e likely to be formed by tidal...
Polar ring galaxies: formation and properties (2002)
Bournaud, Frederic, Combes, Françoise
Formation scenarios for polar ring galaxies are studied through N-body simulatio ns that are compared with existing observations. It is shown that polar rings ar e likely to be formed by tidal...
Block, David L., Bournaud, Frederic, Combes, Francoise, Puerari, Ivanio, Buta, Ron
The distribution of gravitational torques and bar strengths in the local Universe is derived from a detailed study of 163 galaxies observed in the near-infrared. The results are compared with...
Polar ring galaxies: formation and properties (2002)
Bournaud, Frederic, Combes, Françoise
Formation scenarios for polar ring galaxies are studied through N-body simulatio ns that are compared with existing observations. It is shown that polar rings ar e likely to be formed by tidal...
Block, David L., Bournaud, Frederic, Combes, Francoise, Puerari, Ivanio, Buta, Ron
The distribution of gravitational torques and bar strengths in the local Universe is derived from a detailed study of 163 galaxies observed in the near-infrared. The results are compared with...