Mapping the Milky Way with LAMOST – II. The stellar halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 The radial number density and flattening of the Milky Way's stellar halo is measured with $\mathrm{5351}$ metal-poor ([Fe/H]$
Yan Xu +11 more
core +5 more sources
CHEMICAL INHOMOGENEITIES IN THE MILKY WAY STELLAR HALO [PDF]
The Astronomical Journal, 2008 We have compiled a sample of 699 stars from the recent literature with detailed chemical abundance information (spanning -4.2 < [Fe/H] < +0.3), and we compute their space velocities and Galactic orbital parameters.
Ian U. Roederer
core +7 more sources
Progenitor Diversity in the Accreted Stellar Halos of Milky Way–like Galaxies [PDF]
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 +5 more sources
Diverse stellar haloes in nearby Milky Way mass disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We have examined the resolved stellar populations at large galactocentric distances along the minor axis (from 10 kpc up to between 40 and 75 kpc), with limited major axis coverage, of six nearby highly-inclined Milky Way-mass disc galaxies using HST ...
Benjamin Harmsen +6 more
core +9 more sources
Dynamics of stellar and HI streams in the Milky Way halo [PDF]
EPJ Web of Conferences, 2012 Stellar streams are key players in many aspects of Milky Way studies and, in particular, studying their orbital dynamics is crucial for furthering our understanding of the Milky Wayʼs gravitational potential.
Jin S.
doaj +6 more sources
MAPPING THE STELLAR STRUCTURE OF THE MILKY WAY THICK DISK AND HALO USING SEGUE PHOTOMETRY [PDF]
, 2010 We map the stellar structure of the Galactic thick disk and halo by applying color-magnitude diagram (CMD) fitting to photometric data from the SEGUE survey, allowing, for the first time, a comprehensive analysis of their structure at both high and low ...
J. T. A. de Jong +5 more
openalex +3 more sources
Using frequency maps to explore the distribution function of the Milky Way stellar halo
EPJ Web of Conferences, 2012 Resolved surveys of the Milky Way's stellar halo can obtain all 6 phase space coordinates of tens of thousands of individual stars, making it possible to compute their 3-dimensional orbits.
Valluri M.
doaj +3 more sources
The GD-1 Stellar Stream Perturber as a Core-collapsed Self-interacting Dark Matter Halo [PDF]
The Astrophysical Journal LettersThe GD-1 stellar stream exhibits spur and gap structures that may result from a close encounter with a dense substructure. When interpreted as a dark matter subhalo, the perturber is denser than predicted in the standard cold dark matter (CDM) model.
Xingyu Zhang +3 more
doaj +2 more sources
The Next Generation Virgo Cluster Survey. XXXVII. Distant RR Lyrae Stars and the Milky Way Stellar Halo Out to 300 kpc [PDF]
The Astrophysical JournalRR Lyrae stars are standard candles with characteristic photometric variability and serve as powerful tracers of Galactic structure, substructure, accretion history, and dark matter content.
Yuting Feng +8 more
doaj +2 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 +6 more
doaj +1 more source