Results 11 to 20 of about 29,619 (304)
The accretion origin of the Milky Way's stellar halo [PDF]
The Astrophysical Journal, 2008 We have used data from the Sloan Digital Sky Survey (SDSS) Data Release 5 to explore the overall structure and substructure of the stellar halo of the Milky Way using about 4 million color-selected main sequence turn-off stars. We fit oblate and triaxial
Adi Zolotov +23 more
core +7 more sources
Two Stellar Components in the Halo of the Milky Way [PDF]
Nature, 2007 The halo of the Milky Way provides unique elemental abundance and kinematic information on the first objects to form in the Universe, which can be used to tightly constrain models of galaxy formation and evolution. Although the halo was once considered a
A Dekel +55 more
core +5 more sources
The total stellar halo mass of the Milky Way [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT We measure the total stellar halo luminosity using red giant branch (RGB) stars selected from Gaia data release 2. Using slices in magnitude, colour, and location on the sky, we decompose RGB stars belonging to the disc and halo by fitting two-dimensional Gaussians to the Galactic proper motion distributions.
Alis J. Deason +2 more
openalex +7 more sources
Stellar haloes in Milky-Way mass galaxies: From the inner to the outer haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 We present a comprehensive study of the chemical properties of the stellar haloes of Milky-Way mass galaxies, analysing the transition between the inner to the outer haloes.
Beers, T. +3 more
core +3 more sources
Stellar Over-Densities in the Outer Halo of the Milky Way [PDF]
Publications of the Astronomical Society of Australia, 2010 AbstractThis study presents a tomographic survey of a subset of the outer halo (10–40 kpc) drawn from the Sloan Digital Sky Survey Data Release 6. Halo substructure on spatial scales of >3 degrees is revealed as an excess in the local density of sub-giant stars.
Stefan Keller
openalex +6 more sources
The
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We introduce the Assembly of high-ResoluTion Eagle-simulations of MIlky Way-type galaxieS (artemis) simulations, a new set of 42 zoomed-in, high-resolution (baryon particle mass of $\approx 2\times 10^4 \, {\rm M}_{\odot }\, h^{-1}$), hydrodynamical simulations of galaxies residing in haloes of Milky Way mass, simulated with the
Andreea S. Font +8 more
openalex +7 more sources
The dual nature of the Milky Way stellar halo [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractThe theory of the Milky Way formation, in the framework of the ΛCDM model, predicts galactic stellar halos to be built from multiple accretion events starting from the first structure to collapse in the Universe.Evidences in the past few decades have indicated that the Galactic halo consists of two overlapping structural components, an inner ...
A. Curir +3 more
openalex +2 more sources
The cold veil of the Milky Way stellar halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 15 pages, 12 figures.
Alis J. Deason +9 more
openalex +10 more sources
THE HERCULES SATELLITE: A STELLAR STREAM IN THE MILKY WAY HALO? [PDF]
The Astrophysical Journal, 2010 Conference proceedings of "A Universe of dwarf galaxies: Observations, Theories, Simulations" held in Lyon, France (June 14-18, 2010)
Nicolas F. Martin, Shoko Jin
openalex +9 more sources
Mapping the milky way’s stellar halo with 2D data [PDF]
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We propose a new method for measuring the spatial density distribution of the stellar halo of the Milky Way. Our method is based on a pairwise statistic of the distribution of stars in the sky, the angular two-point correlation function (ATPCF). The ATPCF utilizes two-dimensional data of stars only and is therefore immune to the
Anda Chen +5 more
openaire +2 more sources