Results 1 to 10 of about 4,933,717 (335)

Detection of the Keplerian decline in the Milky Way rotation curve [PDF]

open access: yesAstronomy & Astrophysics, 2023
Our position inside the Galactic disc had prevented us from establishing an accurate rotation curve, until the advent of Gaia, whose third data release (Gaia DR3) made it possible to specify it up to twice the optical radius.
Y. Jiao   +6 more
semanticscholar   +1 more source

The Effect of the LMC on the Milky Way System [PDF]

open access: yesGalaxies, 2023
We review the recent theoretical and observational developments concerning the interaction of the Large Magellanic Cloud (LMC) with the Milky Way and its neighbourhood.
E. Vasiliev
semanticscholar   +1 more source

First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way [PDF]

open access: yes, 2023
We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A$^*$), the Galactic center source associated with a supermassive black hole.
K. Akiyama   +387 more
semanticscholar   +1 more source

The Coherent Magnetic Field of the Milky Way [PDF]

open access: yesAstrophysical Journal, 2023
We present a suite of models of the coherent magnetic field of the Galaxy based on new divergence-free parametric functions describing the global structure of the field.
M. Unger, Glennys R. Farrar
semanticscholar   +1 more source

A time-resolved picture of our Milky Way’s early formation history [PDF]

open access: yesNature, 2022
The formation of our Milky Way can be split up qualitatively into different phases that resulted in its structurally different stellar populations: the halo and the disk components1–3.
M. Xiang, H. Rix
semanticscholar   +1 more source

Overview of the DESI Milky Way Survey [PDF]

open access: yesAstrophysical Journal, 2022
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.
A. Cooper   +51 more
semanticscholar   +1 more source

The Poor Old Heart of the Milky Way [PDF]

open access: yesAstrophysical Journal, 2022
Our Milky Way should host an ancient, metal-poor, and centrally concentrated stellar population, which reflects the star formation and enrichment in the few most massive progenitors that coalesced at high redshift to form the proto-Galaxy.
H. Rix   +11 more
semanticscholar   +1 more source

Motivations for a Large Self-Interacting Dark Matter Cross Section from Milky Way Satellites [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2022
We explore the properties of Milky Way subhalos in self-interacting dark matter models for moderate cross sections of 1 to 5 cm2g−1 using high-resolution zoom-in N-body simulations.
M. Silverman   +4 more
semanticscholar   +1 more source

Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with ΛCDM [PDF]

open access: yes, 2020
We present an expanded sample of 75 Milky Way Cepheids with Hubble Space Telescope (HST) photometry and Gaia EDR3 parallaxes, which we use to recalibrate the extragalactic distance ladder and refine the determination of the Hubble constant.
A. Riess   +6 more
semanticscholar   +1 more source

Reconstructing the Last Major Merger of the Milky Way with the H3 Survey [PDF]

open access: yesAstrophysical Journal, 2021
Several lines of evidence suggest that the Milky Way underwent a major merger at z ∼ 2 with the Gaia-Sausage-Enceladus (GSE) galaxy. Here we use H3 Survey data to argue that GSE entered the Galaxy on a retrograde orbit based on a population of highly ...
R. Naidu   +10 more
semanticscholar   +1 more source
astrophysics
galaxy
stars
mathematics
spiral galaxy
interstellar medium
optics
spectral line
galactic plane
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