THE DUAL ORIGIN OF STELLAR HALOS [PDF]
, 2009 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 involved in galaxy ...
A. Zolotov +7 more
semanticscholar +1 more source
Stellar-to-halo mass relation of cluster galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 In the hierarchical formation model, galaxy clusters grow by accretion of smaller groups or isolated galaxies. During the infall into the centre of a cluster, the properties of accreted galaxies change. In particular, both observations and numerical simulations suggest that its dark matter halo is stripped by the tidal forces of the host. We use galaxy-
Pereira, Maria +31 more
openaire +4 more sources
The Stellar Halo of the Galaxy is Tilted and Doubly Broken
The Astronomical Journal, 2022 Abstract Modern Galactic surveys have revealed an ancient merger that dominates the stellar halo of our galaxy (Gaia–Sausage–Enceladus, GSE). Using chemical abundances and kinematics from the H3 Survey, we identify 5559 halo stars from this merger in the radial range r Gal = 6–60kpc.
Jiwon Jesse Han +9 more
openaire +2 more sources
Lessons from cosmic history: The case for a linear star formation -- H2 relation [PDF]
, 2013 Observations show that star formation in galaxies is closely correlated with the abundance of molecular hydrogen. Modeling this empirical relation from first principles proves challenging, however, and many questions regarding its properties remain open.
Feldmann, R.
core +1 more source
STRUCTURE AND KINEMATICS OF THE STELLAR HALOS AND THICK DISKS OF THE MILKY WAY BASED ON CALIBRATION STARS FROM SLOAN DIGITAL SKY SURVEY DR7 [PDF]
, 2009 The structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and kinematic quantities for 32360 “calibration stars” from the Sloan Digital Sky Survey (SDSS) and its first
D. Carollo +8 more
semanticscholar +1 more source
The stellar-to-halo mass relation over the past 12 Gyr [PDF]
Astronomy & Astrophysics, 2020 Aims. Understanding the link between the galaxy properties and the dark matter halos they reside in and their coevolution is a powerful tool for constraining the processes related to galaxy formation.
G. Girelli +5 more
semanticscholar +1 more source
The Progenitor of the Peculiar Galaxy NGC 3077
The Astrophysical Journal, 2023 We present a study of the structural properties and metallicity distribution of the nearby peculiar galaxy NGC 3077. Using data from our survey of the M81 Group with the Hyper Suprime-Cam on board the Subaru Telescope, we construct deep color–magnitude ...
Sakurako Okamoto +4 more
doaj +1 more source
Mapping stellar content to dark matter haloes using galaxy clustering and galaxy–galaxy lensing in the SDSS DR7 [PDF]
, 2015 The mapping between the distributions of the observed galaxy stellar mass and the underlying dark matter halos provides the crucial link from theories of large‐scale structure formation to interpreting the complex phenomena of galaxy formation and ...
Y. Zu, R. Mandelbaum
semanticscholar +1 more source
Introducing the NEWHORIZON simulation: Galaxy properties with resolved internal dynamics across cosmic time [PDF]
Astronomy & Astrophysics, 2020 Hydrodynamical cosmological simulations are increasing their level of realism by considering more physical processes and having greater resolution or larger statistics.
Y. Dubois +15 more
semanticscholar +1 more source
The Assembly and Merging History of Supermassive Black Holes in Hierarchical Models of Galaxy Formation [PDF]
, 2002 We assess models for the assembly of supermassive black holes (SMBHs) at the center of galaxies that trace their hierarchical build-up far up in the dark halo `merger tree'.
Bower R. G. +12 more
core +2 more sources