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  4. The Origin of the Diversity of Dwarf Spheroidal Galaxies
 
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conference paper

The Origin of the Diversity of Dwarf Spheroidal Galaxies

Revaz, Yves  
•
Jablonka, Pascale  
2010
Hunting For The Dark: The Hidden Side Of Galaxy Formation
International Conference on Hunting for the Dark: The Hidden Side of Galaxy Formation

We present a large sample of 166 fully self-consistent hydrodynamical N-body/Tree-SPH simulations of isolated dwarf spheroidal galaxies [1]. It has enabled us to identify the key physical parameters and mechanisms at the origin of the observed variety in the Local Group dSph properties. Using the recent data of the ESO Large Programme DART, we have constrained the star formation history of four Milky Way dSphs, Sextans, Carina, Sculptor and Fornax. For the first time, [Mg/Fe] vs [Fe/H] diagrams derived from high-resolution spectroscopy of hundreds of individual stars are confronted with model predictions. Global relations of dSph are successfully reproduced. Our study shows that the total initial mass of these systems is the main driver of their evolution and explains the diversity in luminosity and metallicity observed in the Local Group dSphs.

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Type
conference paper
DOI
10.1063/1.3458554
Web of Science ID

WOS:000283480000109

Author(s)
Revaz, Yves  
•
Jablonka, Pascale  
Date Issued

2010

Publisher

Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1 D, Melville, Ny 11747-4501 Usa

Journal
Hunting For The Dark: The Hidden Side Of Galaxy Formation
ISBN of the book

978-0-7354-0786-2

Series title/Series vol.

AIP Conference Proceedings; 1240

Start page

421

End page

422

Subjects

Smooth Particle Hydrodynamics

•

Evolution

Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LASTRO  
Event nameEvent placeEvent date
International Conference on Hunting for the Dark: The Hidden Side of Galaxy Formation

Qawra, MALTA

Oct 19-23, 2009

Available on Infoscience
December 16, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/75032
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