Results 21 to 30 of about 4,796,996 (337)

Kinematic-chemical Analysis and Time Tagging for the Diagonal Ridge Structure of the Galactic Outer Disk with LAMOST Red-giant Branch Stars

open access: yesThe Astronomical Journal, 2023
We investigate the kinematic-chemical distribution of red-giant branch stars from the LAMOST survey crossed matched with Gaia DR2 proper motions, and present time tagging for the well-known ridge structures (diagonal distributions for V _R in the R , V ...
Peng Yang   +4 more
doaj   +1 more source

Star Formation in the Milky Way and Nearby Galaxies [PDF]

open access: yes, 2012
We review progress over the past decade in observations of large-scale star formation, with a focus on the interface between extragalactic and Galactic studies.
R. Kennicutt, N. Evans
semanticscholar   +1 more source

Building an Acceleration Ladder with Tidal Streams and Pulsar Timing

open access: yesThe Astrophysical Journal Letters, 2023
We analyse stellar streams in action-angle coordinates combined with recent local direct acceleration measurements to provide joint constraints on the potential of our galaxy.
Peter Craig   +3 more
doaj   +1 more source

Weighing the Milky Way [PDF]

open access: yesClassical and Quantum Gravity, 2003
10 pages, 1 ...
M. KARIM, TARTAGLIA, Angelo, A. BOKHARI
openaire   +4 more sources

Trigonometric Parallaxes of High-mass Star-forming Regions: Our View of the Milky Way [PDF]

open access: yesAstrophysical Journal, 2019
We compile and analyze approximately 200 trigonometric parallaxes and proper motions of molecular masers associated with very young high-mass stars. Most of the measurements come from the BeSSeL Survey using the VLBA and the Japanese VERA project.
M. Reid   +17 more
semanticscholar   +1 more source

Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant [PDF]

open access: yesAstrophysical Journal, 2018
We present Hubble Space Telescope (HST) photometry of a selected sample of 50 long-period, low-extinction Milky Way Cepheids measured on the same WFC3 F555W-, F814W-, and F160W-band photometric system as extragalactic Cepheids in Type Ia supernova host ...
A. Riess   +14 more
semanticscholar   +1 more source

Probing the Milky Way [PDF]

open access: yesAstronomy & Geophysics, 2016
Charlie Walker, Ben Shaw and colleagues give an overview of how the sensitivity, superb resolution and lack of obscuration in e-MERLIN data is changing what we know about our home galaxy and the lifecycles of its stars.
Asanok, K   +9 more
openaire   +6 more sources

A Gaia DR2 view of the open cluster population in the Milky Way [PDF]

open access: yesAstronomy & Astrophysics, 2018
Context. Open clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies.
T. Cantat-Gaudin   +12 more
semanticscholar   +1 more source

Modelling the chemical evolution of the Milky Way [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2021
In this review, I will discuss the comparison between model results and observational data for the Milky Way, the predictive power of such models as well as their limits.
F. Matteucci
semanticscholar   +1 more source

The Milky Way’s plane of satellites is consistent with ΛCDM

open access: yesNature Astronomy, 2022
The Milky Way is surrounded by 11 ‘classical’ satellite galaxies in a remarkable configuration: a thin plane that is possibly rotationally supported. Such a structure is thought to be highly unlikely to arise in the standard ( Λ CDM) cosmological model (
Till Sawala   +9 more
semanticscholar   +1 more source

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