Results 61 to 70 of about 324,804 (215)

Dust formation in Milky Way-like galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
We introduce a dust model for cosmological simulations implemented in the moving-mesh code AREPO and present a suite of cosmological hydrodynamical zoom-in simulations to study dust formation within galactic haloes. Our model accounts for the stellar production of dust, accretion of gas-phase metals onto existing grains, destruction of dust through ...
McKinnon, Ryan, Torrey, Paul, Vogelsberger, Mark, McKinnon, Ryan Michael, Torrey, Paul A.   +4 more
openaire   +6 more sources

HALO7D. III. Chemical Abundances of Milky Way Halo Stars from Medium-resolution Spectra

The Astrophysical Journal, 2023
The Halo Assembly in Lambda Cold Dark Matter: Observations in 7 Dimensions (HALO7D) survey measures the kinematics and chemical properties of stars in the Milky Way (MW) stellar halo to learn about the formation of our Galaxy.
Kevin A. McKinnon, Emily C. Cunningham, Constance M. Rockosi, Puragra Guhathakurta, Ivanna Escala, Evan N. Kirby, Alis J. Deason   +6 more
doaj   +1 more source

Dark matter annihilation in the milky way galaxy: effects of baryonic compression.

Physical Review Letters, 2004
If the dark matter (DM), which is considered to constitute most of the mass of galaxies, is made of supersymmetric particles, the central region of our Galaxy should emit gamma rays produced by their annihilation.
F. Prada, A. Klypin, J. Flix, Mario Martinez, E. Simonneau   +4 more
semanticscholar   +1 more source

Staphylococcus Aureus AgrA Modulators from South African Antimicrobial Plants.

Chemistry &Biodiversity, Accepted Article.
South African plants are an underutilized metabolites source for novel antimicrobials targeting key quorum sensing (QS) systems like the Staphylococcus aureus AgrA. AgrA modulating metabolites constitute a new approach to reducing resistance development.
Christiana Eleojo Aruwa, Saheed Sabiu
wiley   +1 more source

The Age-dependent Vertical Actions of Young Stars in the Galaxy

The Astrophysical Journal
Stars in the Galactic disk are born on cold, nearly circular orbits with small vertical excursions. After their birth, their orbits evolve, driven by small- or large-scale perturbations in the Galactic disk’s gravitational potential.
D. N. Garzon, Neige Frankel, Eleonora Zari, Maosheng Xiang, Hans-Walter Rix   +4 more
doaj   +1 more source

What Does the Milky Way Look Like?

The Astrophysical Journal, 2023
In spite of much work, the overall spiral structure morphology of the Milky Way remains somewhat uncertain. In the last two decades, accurate distance measurements have provided us with an opportunity to solve this issue.
Y. Xu, C. J. Hao, D. J. Liu, Z. H. Lin, S. B. Bian, L. G. Hou, J. J. Li, Y. J. Li   +7 more
doaj   +1 more source

COSMOLOGICAL SIMULATIONS OF MILKY WAY-SIZED GALAXIES [PDF]

The Astrophysical Journal, 2016
ABSTRACT We introduce a new set of eight Milky Way-sized cosmological simulations performed using the AMR code Adaptive Refinement Tree + Hydrodynamics in a ΛCDM cosmology. The set of zoom-in simulations covers present-day virial masses that range from to
Pedro Colín, Vladimir Avila-Reese, Santi Roca-Fàbrega, Octavio Valenzuela   +3 more
openaire   +3 more sources

Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK

Journal of Research in Science Teaching, EarlyView.
ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson, Anne‐Marie Cederqvist   +1 more
wiley   +1 more source

A Consistent Explanation for the Unusual Initial Mass Function and Star Formation Rate in the Central Molecular Zone (CMZ)

The Astrophysical Journal
We examine various physical processes that may explain the shallow high-mass slope of the initial mass function (IMF), as well as the low star formation rate (SFR) in star-forming molecular clouds (MCs) in the Central Molecular Zone (CMZ).
Gilles Chabrier, Pierre Dumond
doaj   +1 more source

The Dynamical Evolution of Accreted Star Clusters in the Milky Way [PDF]

, 2015
We perform $N$-body simulations of star clusters in time-dependant galactic potentials. Since the Milky Way was built-up through mergers with dwarf galaxies, its globular cluster population is made up of clusters formed both during the initial collapse of the Galaxy and in dwarf galaxies that were later accreted.
arxiv   +1 more source