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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

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

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

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

This paper presents a new spectral evolutionary model of galaxies, properly taking the effects of nebular emission and pre-main sequence evolution into account. The impact of these features in different photometric filters is evaluated,…

Astrophysics · Physics 2009-11-06 Erik Zackrisson , Nils Bergvall , Kjell Olofsson , Arnaud Siebert

I discuss the chemical and spectrophotometric evolution of galaxies over cosmological timescales and present a first attempt to treat both aspects in a chemically consistent way. In our evolutionary synthesis approach, we account for the…

Astrophysics · Physics 2007-05-23 U. Fritze-v. Alvensleben

The star formation and the subsequent metallic enrichment of spiral galaxies, occurring at the early phases of their evolution, produce emission lines whose contribution may change the colors of these objects. We have computed this…

Cosmology and Nongalactic Astrophysics · Physics 2010-02-08 Mollá M. García-Vargas , M. Martín-Manjón

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

Galaxy interactions expel a significant amount of stars and gas into the surrounding environment. I review the formation and evolution of the tidal debris spawned during these collisions, and describe how this evolution depends on the large…

Astrophysics · Physics 2007-05-23 Chris Mihos

I review the basic concepts for the spectrophotometric and chemical evolution of galaxies, contrast various approaches and discuss their respective advantages and shortcomings, both for the interpretation of nearby and high redshift…

Astrophysics · Physics 2007-05-23 U. Fritze-v. Alvensleben

We summarize the properties of tidal dwarf candidates in a sample of interacting galaxies and classify objects in tidal tails depending on their morphological appearance. New high-resolution dynamical models are needed to understand how the…

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

We present a self-consistent model under a star-bursting scenario for H{\sc ii} galaxies, combining different codes of chemical evolution, evolutionary population synthesis and photoionization. The results obtained reproduce simultaneoulsy…

Astrophysics · Physics 2007-12-05 M. L. Martín Manjón , M. Mollá , A. I. Díaz , R. Terlevich

A subgroup of dwarf galaxies have characteristics of a possible evolutionary transition between star-forming systems and dwarf ellipticals. These systems host significant starbursts in combination with smooth, elliptical outer envelopes and…

Some aspects of the chemical evolution of late-type dwarf galaxies are reviewed, together with their implications on three issues of cosmological relevance: similarity to primeval galaxies, derivation of the primordial helium abundance,…

Astrophysics · Physics 2007-05-23 M. Tosi

We use the self-consistent model technique developed by Mart\'in-Manj\'on et al. (2008) that combines the chemical evolution with stellar population synthesis and photo-ionization codes, to study the star formation scenarios capable of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 M. L. Martín-Manjón , M. Mollá , A. I. Díaz , R. Terlevich

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 orbiting around their massive progenitor. They…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Frederic Bournaud

We show autoconsistent chemical and spectro-photometric evolution models applied to spiral and irregular galaxies. Evolutionary synthesis models usually used to explain the stellar component spectro-photometric data, are combined with…

Astrophysics · Physics 2016-08-14 Mercedes Mollá

The aim of this paper is to cast light on the formation and evolution of elliptical galaxies by means of N-body/hydro-dynamical simulations that include star formation, feed-back and chemical evolution. Particular attention is paid to the…

Astrophysics · Physics 2009-11-06 G. Carraro , C. Chiosi , L. Girardi , C. Lia

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

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
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