scholarly journals The redshift evolution of the distribution of star formation among dark matter halos as seen in the infrared

2013 ◽  
Vol 557 ◽  
pp. A66 ◽  
Author(s):  
Matthieu Béthermin ◽  
Lingyu Wang ◽  
Olivier Doré ◽  
Guilaine Lagache ◽  
Mark Sargent ◽  
...  
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Dark Matter Halos

scholarly journals The Galaxy UV Luminosity Function Before the Epoch of Reionization

2015 ◽  
Vol 11 (S319) ◽  
pp. 33-33 ◽  
Author(s):  
Charlotte A. Mason ◽  
Michele Trenti ◽  
Tommaso Treu
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Degrees Of Freedom ◽  
Luminosity Function ◽  
High Redshift ◽  
Dark Matter Halos ◽  
Redshift Surveys ◽  
The Galaxy ◽  
Mass Dependent

AbstractWe present a model for the evolution of the galaxy ultraviolet (UV) luminosity function (LF) where star formation is linked to the assembly of dark matter halos under the assumption of a mass dependent, but redshift independent, efficiency. With a calibration at a single redshift, and no further degrees of freedom, our model captures the evolution of the UV LF over all available observations (0≲ z ≲ 10). We make predictions for reionization and future high-redshift surveys with JWST and WFIRST.

scholarly journals Building Galactic Disks in Triaxial Dark Matter Halos

2006 ◽  
Vol 2 (S235) ◽  
pp. 24-28
Author(s):  
Isaac Shlosman
Keyword(s):  
Dark Matter ◽  
Angular Momentum ◽  
Star Formation ◽  
Numerical Simulations ◽  
Recent Work ◽  
Stellar Evolution ◽  
Dark Matter Halos ◽  
Local Universe ◽  
Broad Agreement ◽  
Formation And Evolution

AbstractWe review our recent work on the formation and evolution of disks within triaxial dark matter (DM) halos by means of numerical simulations, including star formation and feedback from stellar evolution. The growing disks are strongly influenced by shapes of DM halos and modify them in turn. Disk parameters are in a broad agreement with those in the local universe. Gas-rich stellar bars grow in tandem with the disk and facilitate the angular momentum redistribution in the system and radial gas inflow. Nested bars appear to form as a by-product. Interactions between various non-axisymmetric components—bars, disks and halos lead to decay of bars or washing out of ellipticity in the inner halo.

scholarly journals CONSTRAINING THE STAR FORMATION HISTORIES IN DARK MATTER HALOS. I. CENTRAL GALAXIES

2013 ◽  
Vol 770 (2) ◽  
pp. 115 ◽  
Author(s):  
Xiaohu Yang ◽  
H. J. Mo ◽  
Frank C. van den Bosch ◽  
Ana Bonaca ◽  
Shijie Li ◽  
...  
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Dark Matter Halos ◽  
Star Formation Histories

Modeling Star Formation in Dwarf Spheroidal Galaxies: A Case for Extended Dark Matter Halos

2005 ◽  
Vol 624 (2) ◽  
pp. 726-741 ◽  
Author(s):  
Sergey Mashchenko ◽  
H. M. P. Couchman ◽  
Alison Sills
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Dark Matter Halos ◽  
Dwarf Spheroidal Galaxies ◽  
Spheroidal Galaxies

scholarly journals Dark Matter Halos and the Main Sequence of Starforming Galaxies

2015 ◽  
Vol 11 (S319) ◽  
pp. 1-1
Author(s):  
Hervé Aussel ◽  
Sébastien Peirani ◽  
Laurent Vigroux
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Numerical Simulations ◽  
Power Law ◽  
Main Sequence ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Stellar Mass ◽  
Dark Matter Halos ◽  
Star Forming

AbstractWe investigate why hydrodynamical numerical simulations have difficulties (Weinmann et al. 2011) in reproducing the Main Sequence (MS) of star-forming galaxies, i.e. the fact that galaxies forming stars lie on a tight power law sequence in the stellar mass (M*), star formation rate (SFR) plane (Schreiber et al. 2015). Instead of trying to improve the agreement of simulations with the observations by modifying the subgrid recipes of baryons, we take here a step back to check whether the accretion onto dark matter halos is consistent with the existence of the main sequence of star forming galaxies.

scholarly journals THE AVERAGE STAR FORMATION HISTORIES OF GALAXIES IN DARK MATTER HALOS FROMz= 0-8

2013 ◽  
Vol 770 (1) ◽  
pp. 57 ◽  
Author(s):  
Peter S. Behroozi ◽  
Risa H. Wechsler ◽  
Charlie Conroy
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Dark Matter Halos ◽  
Star Formation Histories

scholarly journals A Redshift-independent Efficiency Model: Star Formation and Stellar Masses in Dark Matter Halos at z ≳ 4

2018 ◽  
Vol 868 (2) ◽  
pp. 92 ◽  
Author(s):  
Sandro Tacchella ◽  
Sownak Bose ◽  
Charlie Conroy ◽  
Daniel J. Eisenstein ◽  
Benjamin D. Johnson
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Dark Matter Halos ◽  
Model Star ◽  
Stellar Masses

scholarly journals The chemical evolution of dwarf starburst galaxies

1999 ◽  
Vol 193 ◽  
pp. 679-691
Author(s):  
Francesca Matteucci ◽  
Annibale D'Ercole
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Chemical Evolution ◽  
Starburst Galaxies ◽  
Star Formation History ◽  
H Ii Regions ◽  
Dark Matter Halos ◽  
Star Formation Activity ◽  
Irregular Galaxies ◽  
Formation History

We will review the most popular models for the chemical evolution of some starburst galaxies, in particular dwarf irregular galaxies. These galaxies are relatively simple and unevolved objects with low metallicities and large gas contents, suggesting that they are either young or have undergone discontinuous star formation activity. Some dwarf irregulars are starburst galaxies currently experiencing an intense star formation event and they are known as blue compact galaxies or extragalactic H II regions. We will discuss the effects of the presence of dark matter halos together with stellar energetics (stellar winds and supernovae) on the development of a galactic wind in these systems. Particular emphasis will be given to the role of massive stars in driving the thermal and chemical evolution of the gas, in particular to type II supernovae. A comparison between different model predictions for abundances and abundance ratios will be used to impose constraints on the star formation history and on the amount of dark matter, which we found to be extremely important in these systems.

Pop III Supernova Feedback on the Formation of the First Galaxies

2019 ◽  
Vol 15 (S341) ◽  
pp. 253-256 ◽  
Author(s):  
Li-Hsin Chen ◽  
Ke-Jung Chen
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Adaptive Mesh Refinement ◽  
Initial Conditions ◽  
Adaptive Mesh ◽  
Building Blocks ◽  
Dark Matter Halos ◽  
First Stars ◽  
Stellar Feedback ◽  
First Galaxies

AbstractModern cosmological simulations suggest that the hierarchical assembly of dark matter halos provided the gravitational wells that allowed the primordial gases to form stars and galaxies inside them. The first galaxies comprised of the first systems of stars gravitationally bound in dark matter halos are naturally recognized as the building blocks of early Universe. To understand the formation of the first galaxies, we use an adaptive mesh refinement (AMR) cosmological code, Enzo to simulate the formation and evolution of the first galaxies. We first model an isolated galaxy by considering much microphysics such as star formation, stellar feedback, and primordial gas cooling. To examine the effect of Pop III stellar feedback to the first galaxy formation, we adjust the initial temperature, density distribution and metallicity distributions by assuming different IMFs of the first stars. Our results suggest that star formation in the first galaxies is sensitive to the initial conditions of Pop III supernovae and their remnants. Our study can help to correlate the populations of the first stars and supernovae to star formation inside these first galaxies which may be soon observed by the (James Webb Space Telescope JWST).

scholarly journals The Ages of Elliptical Galaxies in a Merger Model

1996 ◽  
Vol 171 ◽  
pp. 265-273 ◽  
Author(s):  
G. Kauffmann
Keyword(s):  
Dark Matter ◽  
Star Formation ◽  
Early Phase ◽  
High Redshift ◽  
Elliptical Galaxies ◽  
Disk Galaxies ◽  
Dark Matter Halos ◽  
Formation History ◽  
History Of ◽  
Intense Star Formation

There have long been two competing views on the formation history of the ellipticals galaxies we see today. One is that most of the stars in present-day galactic bulges and ellipticals were produced during a relatively short, early phase of intense star formation at high redshift. The second view is that elliptical galaxies are relative latecomers, having been produced as the result of the merging of disk galaxies drawn together by gravity as their surrounding dark matter halos coalesced.

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