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Related papers: FIRE in the Field: Simulating the Threshold of Gal…

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We present an analysis of the galaxy-scale gaseous outflows from the FIRE (Feedback in Realistic Environments) simulations. This suite of hydrodynamic cosmological zoom simulations resolves formation of star-forming giant molecular clouds…

We study the distribution of cold dark matter (CDM) in cosmological simulations from the FIRE (Feedback In Realistic Environments) project, for $M_{\ast}\sim10^{4-11}\,M_{\odot}$ galaxies in $M_{\rm h}\sim10^{9-12}\,M_{\odot}$ halos. FIRE…

Astrophysics of Galaxies · Physics 2015-10-28 T. K. Chan , D. Kereš , J. Oñorbe , P. F. Hopkins , A. L. Muratov , C. -A. Faucher-Giguère , E. Quataert

We present a robust method to constrain average galaxy star formation rates, star formation histories, and the intracluster light as a function of halo mass. Our results are consistent with observed galaxy stellar mass functions, specific…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-30 Peter S. Behroozi , Risa H. Wechsler , Charlie Conroy

Recent analysis of strongly-lensed sources in the Hubble Frontier Fields indicates that the rest-frame UV luminosity function of galaxies at $z=$6--8 rises as a power law down to $M_\mathrm{UV}=-15$, and possibly as faint as -12.5. We use…

We explore the properties of central galaxies living in voids using the EAGLE cosmological hydrodynamic simulations. Based on the minimum void-centric distance, we define four galaxy samples: inner void, outer void, wall, and skeleton. We…

Astrophysics of Galaxies · Physics 2022-09-21 Yetli Rosas-Guevara , Patricia Tissera , Claudia del P. Lagos , Enrique Paillas , Nelson Padilla

Galaxy formation models are now able to reproduce observed relations such as the relation between galaxies' star formation rates (SFRs) and stellar masses ($M_*$) and the stellar mass--halo mass relation. We demonstrate that comparisons of…

The Local Group hosts a number of star-forming dwarf galaxies that show evidence of periods of little to no star formation. We use a suite of cosmological simulations to study how star formation is reignited in such galaxies. We focus on…

Astrophysics of Galaxies · Physics 2018-10-15 Anna C. Wright , Alyson M. Brooks , Daniel R. Weisz , Charlotte R. Christensen

We explore the connection between galaxies and dark matter halos in the Milky Way (MW) and quantify the implications on properties of the dark matter particle and the phenomenology of low-mass galaxy formation. This is done through a…

Astrophysics of Galaxies · Physics 2018-02-07 Prashin Jethwa , Denis Erkal , Vasily Belokurov

We use the Millennium Simulation to measure the cross-correlation between halo centres and mass (or equivalently the average density profiles of dark haloes) in a LCDM cosmology. We present results for radii in the range 10 kpc/h < r < 30…

Astrophysics · Physics 2009-11-13 E. Hayashi , S. D. M. White

Galaxy sizes correlate closely with the sizes of their parent dark matter haloes, suggesting a link between halo formation and galaxy growth. However, the precise nature of this relation and its scatter remains to be understood fully,…

McKay et al. (2002) have recently used measurements of weak galaxy-galaxy lensing in the Sloan Digital Sky Survey to estimate the cross correlation between galaxies and the projected dark matter density field. They derive a relation between…

Astrophysics · Physics 2009-11-07 XiaoHu Yang , H. J. Mo , Guinevere Kauffmann , YaoQuan Chu

We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the response of cold dark matter (CDM) haloes to baryonic processes. Previous work has shown that the halo response is primarily a…

Astrophysics of Galaxies · Physics 2020-12-02 Aaron A. Dutton , Tobias Buck , Andrea V. Macciò , Keri L. Dixon , Marvin Blank , Aura Obreja

We present a new model for the formation of stellar halos in dwarf galaxies. We demonstrate that the stars and star clusters that form naturally in the inner regions of dwarfs are expected to migrate from the gas rich, star forming centre…

Astrophysics of Galaxies · Physics 2012-08-10 Aaron J. Maxwell , James Wadsley , H. M. P. Couchman , Sergey Mashchenko

In our modern understanding of galaxy formation, every galaxy forms within a dark matter halo. The formation and growth of galaxies over time is connected to the growth of the halos in which they form. The advent of large galaxy surveys as…

Astrophysics of Galaxies · Physics 2018-10-17 Risa H. Wechsler , Jeremy L. Tinker

We present results based on a set of N-Body/SPH simulations of isolated dwarf galaxies. The simulations take into account star formation, stellar feedback, radiative cooling and metal enrichment. The dark matter halo initially has a cusped…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Annelies Cloet-Osselaer , Sven De Rijcke , Joeri Schroyen , Vanessa Dury

We present zoom-in N-body + Hydrodynamic simulations of dwarf central galaxies formed in Warm Dark Matter (WDM) halos with masses at present-day of $2-4\times 10^{10}$ \msun. Two different cases are considered, the first one when halo…

Astrophysics of Galaxies · Physics 2015-06-23 Pedro Colin , Vladimir Avila-Reese , Alejandro Gonzalez-Samaniego , Hector Velazquez

We present cosmological hydrodynamical simulations of the formation of dwarf galaxies in a representative sample of haloes extracted from the Millennium-II Simulation. Our six haloes have a z = 0 mass of ~10^10 solar masses and show…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Till Sawala , Qi Guo , Cecilia Scannapieco , Adrian Jenkins , Simon D. M. White

We examine the present-day total stellar-to-halo mass (SHM) ratio as a function of halo mass for a new sample of simulated field galaxies using fully cosmological, LCDM, high resolution SPH + N-Body simulations.These simulations include an…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Ferah Munshi , F. Governato , A. M. Brooks , C. Christensen , S. Shen , S. Loebman , B. Moster , T. Quinn , J. Wadsley

We investigate how radiative feedback from the first stars affects the assembly of the first dwarf galaxies. We perform cosmological zoomed SPH simulations of a dwarf galaxy assembling inside a halo of virial mass 10^9 solar at z = 10. The…

Cosmology and Nongalactic Astrophysics · Physics 2013-08-22 Andreas H. Pawlik , Milos Milosavljevic , Volker Bromm

We investigate the formation of the stellar halos of four simulated disk galaxies using high resolution, cosmological SPH + N-Body simulations. These simulations include a self-consistent treatment of all the major physical processes…

Astrophysics of Galaxies · Physics 2009-08-24 Adi Zolotov , Beth Willman , Alyson M. Brooks , Fabio Governato , Chris B. Brook , David W. Hogg , Tom Quinn , Greg Stinson