Results 41 to 50 of about 216,057 (315)
Chemical Cartography. I. A Carbonicity Map of the Galactic Halo [PDF]
, 2017 We present the first map of carbonicity, [C/Fe], for the halo system of the Milky Way, based on a sample of over 100,000 main-sequence turnoff stars with available spectroscopy from the Sloan Digital Sky Survey.
Y. S. Lee +7 more
semanticscholar +1 more source
Unmixing the Galactic halo with RR Lyrae tagging [PDF]
, 2017 We show that tagging RR Lyrae stars according to their location in the period-amplitude diagram can be used to shed light on the genesis of the Galactic stellar halo. The mixture of RR Lyrae of ab type, separated into classes along the lines suggested by
V. Belokurov +6 more
semanticscholar +1 more source
The dual origin of the Galactic thick disc and halo from the gas-rich Gaia–Enceladus Sausage merger [PDF]
, 2020 We analyse a set of cosmological magneto-hydrodynamic simulations of the formation of Milky Way-mass galaxies identified to have a prominent radially anisotropic stellar halo component similar to the so-called “Gaia Sausage” found in the Gaia data.
R. Grand +8 more
semanticscholar +1 more source
Search for Dark Matter Annihilations towards the Inner Galactic Halo from 10 Years of Observations with H.E.S.S. [PDF]
, 2016 The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM.
H. Abdallah +242 more
semanticscholar +1 more source
Constraints from Faraday rotation on the magnetic field structure in the Galactic halo [PDF]
, 2016 We examine the constraints imposed by Faraday rotation measures of extragalactic point sources on the structure of the magnetic field in the halo of our Galaxy.
Philippe Terral, K. Ferrière
semanticscholar +1 more source
Parameters of Six Selected Galactic Potential Models
Open Astronomy, 2017 This paper is devoted to the refinement of the parameters of the six three-component (bulge, disk, halo) axisymmetric Galactic gravitational potential models on the basis of modern data on circular velocities of Galactic objects located at distances up ...
Bajkova Anisa, Bobylev Vadim
doaj +1 more source
Stellar Streams and Clouds in the Galactic Halo [PDF]
, 2016 Recent years have seen the discovery of an ever growing number of stellar debris streams and clouds. These structures are typically detected as extended and often curvilinear overdensities of metal-poor stars that stand out from the foreground disk ...
C. Grillmair, J. Carlin
semanticscholar +1 more source
European Physical Journal C: Particles and Fields, 2022 Dark matter (DM) annihilation in the galactic halo can be enhanced relative to that in the early Universe due to the Breit–Wigner enhancement, if the DM particles annihilate through a narrow resonance.
Yu-Chen Ding +3 more
doaj +1 more source
Sub-structures in the inner halo of the Milky Way
EPJ Web of Conferences, 2012 We present a spectroscopic study of a sample of 238 RR Lyrae stars, from the QUEST survey, located in the Galactic halo at distances between 4 and 20 kpc from the Sun.
Duffau S. +3 more
doaj +1 more source
A Catalog of Distance Determinations for the LAMOST DR8 K Giants in the Galactic Halo
The Astronomical Journal, 2023 We present a catalog of distances for 19,544 K giants drawn from Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR8. Most of them are located in the halo of the Milky Way up to ∼120 kpc.
Lan Zhang +6 more
doaj +1 more source