2018MNRAS.473.5015A

Query : 2018MNRAS.473.5015A

2018MNRAS.473.5015A - Mon. Not. R. Astron. Soc., 473, 5015-5025 (2018/February-1)

A possible formation scenario for dwarf spheroidal galaxies - III. Adding star formation histories to the fiducial model.

ALARCON JARA A.G., FELLHAUER M., MATUS CARRILLO D.R., ASSMANN P., URRUTIA ZAPATA F., HAZELDINE J. and ARAVENA C.A.

Abstract (from CDS):

Dwarf spheroidal galaxies are regarded as the basic building blocks in the formation of larger galaxies and are the most dark matter dominated systems in the Universe, known so far. There are several models that attempt to explain their formation and evolution, but they have problems modelling the formation of isolated dwarf spheroidal galaxies. Here, we will explain a possible formation scenario in which star clusters form inside the dark matter halo of a dwarf spheroidal galaxy. These star clusters suffer from low star formation efficiency and dissolve while orbiting inside the dark matter halo. Thereby, they build the faint luminous components that we observe in dwarf spheroidal galaxies. In this paper, we study this model by adding different star formation histories to the simulations and compare the results with our previous work and observational data to show that we can explain the formation of dwarf spheroidal galaxies.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: numerical - galaxies: dwarf - galaxies: star clusters: general - galaxies: star formation - galaxies: structure - dark matter

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
4 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
5 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
6 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
7 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
8 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
9 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
10 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
11 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
12 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
13 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
14 NAME Local Group GrG ~ ~           ~ 9325 0

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