Results 1 to 10 of about 30,917 (286)
The Accretion Origin of the Milky Way’s Stellar Halo [PDF]
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
Eric F Bell +2 more
exaly +7 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 +4 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
A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream
The Astrophysical Journal Letters, 2023 We report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky.
Yong Yang +4 more
doaj +1 more source
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
The Astrophysical Journal, 2023 We study satellite counts and quenched fractions for satellites of Milky Way analogs in Romulus25 , a large-volume cosmological hydrodynamic simulation.
Jordan Van Nest +5 more
doaj +1 more source
The Astrophysical Journal, 2023 We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia astrometry, with a focus on the halo−disk interface in the local volume.
Deokkeun An +3 more
doaj +1 more source
Distant Echoes of the Milky Way’s Last Major Merger
The Astrophysical Journal, 2023 The majority of the Milky Way’s stellar halo consists of debris from our galaxy’s last major merger, the Gaia-Sausage-Enceladus (GSE). In the past few years, stars from the GSE have been kinematically and chemically studied in the inner 30 kpc of our ...
Vedant Chandra +11 more
doaj +1 more source
Overview of the DESI Milky Way Survey
The Astrophysical Journal, 2023 We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak National Observatory.
Andrew P. Cooper +64 more
doaj +1 more source
The connection between the host halo and the satellite galaxies of the Milky Way [PDF]
, 2016 Many properties of the Milky Way's dark matter halo, including its mass assembly history, concentration, and subhalo population, remain poorly constrained.
Benson, Andrew +7 more
core +3 more sources