Results 1 to 10 of about 589 (260)
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
Richard Long, Yougang Wang, Yan Gong
exaly +4 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 Deason +2 more
exaly +5 more sources
Two stellar components in the halo of the Milky Way [PDF]
Nature, 2007 Two stand-alone files in manuscript, concatenated together. The first is for the main paper, the second for supplementary information.
Young Sun Lee +2 more
exaly +5 more sources
Metallicity bias in the kinematics of the Milky Way stellar halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 Accepted for publication in MNRAS (2013 January 14)
Joss Bland-Hawthorn +2 more
exaly +3 more sources
The Accretion Origin of the Milky Way’s Stellar Halo [PDF]
Astrophysical Journal, 2008 Submitted to the Astrophysical Journal.
Zeljko Ivezić +2 more
exaly +4 more sources
Progenitor Diversity in the Accreted Stellar Halos of Milky Way–like Galaxies
The Astrophysical JournalOngoing large stellar spectroscopic surveys of the Milky Way seek to reconstruct the major events in the assembly history of the Galaxy. Chemical and kinematic observations can be used to separate the contributions of different progenitor galaxies to the
Sy-Yun Pu +4 more
doaj +3 more sources
Characterizing the Velocity Anisotropy of the Milky Way’s Stellar Halo
The Astrophysical JournalModeling the Milky Way stellar halo requires well-determined density and velocity anisotropy profiles. However, it has been challenging to gather a large sample of stars with six-dimensional data that extend beyond 40 kpc to map the outer halo.
F. O. Barbosa +8 more
doaj +3 more sources
The cold veil of the Milky Way stellar halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 49
Deason, A.J. +9 more
openaire +9 more sources
STELLAR POPULATION VARIATIONS IN THE MILKY WAY's STELLAR HALO [PDF]
The Astronomical Journal, 2010 If the stellar halos of disk galaxies are built up from the disruption of dwarf galaxies, models predict highly structured variations in the stellar populations within these halos. We test this prediction by studying the ratio of blue horizontal branch stars (BHB stars; more abundant in old, metal-poor populations) to main-sequence turn-off stars (MSTO
Bell, Eric F. +4 more
openaire +4 more sources
The kinematic properties of Milky Way stellar halo populations [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT In the Gaia era, stellar kinematics are extensively used to study Galactic halo stellar populations, to search for halo structures, and to characterize the interface between the halo and hot disc populations. We use distribution function-based models of modern data sets with 6D phase space data to qualitatively describe a ...
James M M Lane, Jo Bovy, J Ted Mackereth
openaire +2 more sources