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Related papers: Refueled and shielded - The early evolution of Tid…

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We present high-resolution simulations of tidal dwarf galaxies (TDG) to investigate their early chemo-dynamical evolution and test their survivability. In this work the simulation setup is introduced and the response of TDGs to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 S. Ploeckinger , G. Hensler , S. Recchi , N. Mitchell , P. Kroupa

The formation and evolution of gravitationally bound, star forming substructures in tidal tails of interacting galaxies, called tidal dwarf galaxies (TDG), has been studied, until now, only in idealised simulations of individual pairs of…

Astrophysics of Galaxies · Physics 2017-12-13 Sylvia Ploeckinger , Kuldeep Sharma , Joop Schaye , Robert A. Crain , Matthieu Schaller , Christopher Barber

We present detailed numerical simulations of the evolution of Tidal Dwarf Galaxies (TDGs) after they kinematically decouple from the rest of the tidal arm to investigate their survivability. Both the short-term (500 Myr) response of TDGs to…

Astrophysics of Galaxies · Physics 2015-06-23 Sylvia Ploeckinger , Simone Recchi , Gerhard Hensler , Pavel Kroupa

In a series of papers, we present detailed chemo-dynamical simulations of tidal dwarf galaxies (TDGs). After the first paper, where we focused on the very early evolution, we present in this work simulations on the long-term evolution of…

Astrophysics of Galaxies · Physics 2015-06-23 Sylvia Ploeckinger , Simone Recchi , Gerhard Hensler , Pavel Kroupa

Cosmological models have granted dwarf galaxies a key role: their properties constrain the distribution of dark matter and the physical evolution of their hosts. There is increasing evidence that objects with masses of dwarf galaxies form…

Astrophysics · Physics 2009-11-11 F. Bournaud , P. -A. Duc

Advances on the formation and survival of the so-called Tidal Dwarf Galaxies (TDGs) are reviewed. The understanding on how objects of the mass of dwarf galaxies may form in debris of galactic collisions has recently benefited from the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Pierre-Alain Duc

Young tidal dwarf galaxies (TDGs) are observed in the tidal debris of gas-rich interacting galaxies. In contrast to what is generally assumed to be the case for isolated dwarf galaxies, TDGs are not embedded in their own dark matter (DM)…

Astrophysics of Galaxies · Physics 2015-06-26 Sylvia Ploeckinger

Evolutionary synthesis models for Tidal Dwarf Galaxies (TDGs) are presented that allow to have varying proportions of young stars formed in the merger-induced starburst and of stars from the merging spirals' disks. Comparing model grids…

Astrophysics · Physics 2007-05-23 Uta Fritze - v. Alvensleben , Pierre - Alain Duc

Evolutionary synthesis models for Tidal Dwarf Galaxies (TDGs) are presented that allow to have varying proportions of young stars formed in the merger-induced starburst and of stars from the merging spirals' disks. The specific…

Astrophysics · Physics 2007-05-23 U. Fritze-v. Alvensleben , C. S. Möller , P. - A. Duc

The formation of tidal dwarf galaxies (TDG) inside tidal arms of interacting disk galaxies has been studied with N-body and N-body/SPH simulations at different resolutions. In pure N-body simulations no bound objects are formed at high…

Astrophysics · Physics 2008-11-26 M. Wetzstein , T. Naab , A. Burkert

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 cord: the tidal tail at the tip of which they…

Astrophysics · Physics 2007-05-23 Pierre-Alain Duc , Frederic Bournaud , Frederic Masset

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 enough to form genuine recycled galaxies.…

Astrophysics · Physics 2009-11-10 Pierre-Alain Duc , Frederic Bournaud , Frederic Masset

We first review the results of the tidal stirring model for the transformation of gas-rich dwarf irregulars into dwarf spheroidals, which turns rotationally supported stellar systems into pressure supported ones. We emphasize the importance…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Lucio Mayer

We investigate the stellar populations of a sample of Tidal Dwarf Galaxies, combining observations and evolutionary synthesis models to try and reveal their formation mechanism. On optical images we select a first sample of TDGs for which…

Astrophysics · Physics 2007-05-23 Peter M. Weilbacher , Uta Fritze-v. Alvensleben , Pierre-Alain Duc

Using collisionless N-body simulations, we investigate the tidal evolution of late-type, rotationally supported dwarfs inside Milky Way-sized host galaxies. Our study focuses on a wide variety of dwarf orbital configurations and initial…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Ewa L. Lokas , Stelios Kazantzidis , Lucio Mayer

Context: Dwarf galaxies can arise from self-gravitating structures emerging from tidal tails. What fraction of the known dwarf galaxies in the Local Universe can have this origin is still a matter of debate. Aims: In our effort to…

Astrophysics · Physics 2009-11-13 S. Recchi , Ch. Theis , P. Kroupa , G. Hensler

Our aim is to study the evolution of tidal dwarf galaxies. The first step is to understand whether a model galaxy without Dark Matter can sustain the feedback of the ongoing star formation. We present tests of the evolution of models in…

Astrophysics · Physics 2009-11-11 S. Recchi , P. Kroupa , Ch. Theis , G. Hensler

We study the tidal evolution of galaxies in the most massive cluster of the IllustrisTNG-100 simulation. For the purpose of this work we select 112 galaxies with the largest stellar masses at present and follow their properties in time.…

Astrophysics of Galaxies · Physics 2020-07-01 Ewa L. Lokas

Star clusters form out of the densest parts of infrared dark clouds. The emergence of massive stars expels the residual gas, which has not formed stars yet. Gas expulsion lowers the gravitational potential of the embedded cluster, unbinding…

Astrophysics of Galaxies · Physics 2020-08-19 František Dinnbier , Pavel Kroupa

We conduct high-resolution collisionless N-body simulations to investigate the tidal evolution of dwarf galaxies on an eccentric orbit in the Milky Way (MW) potential. The dwarfs originally consist of a low surface brightness stellar disk…

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