Results 101 to 110 of about 154,036 (328)

The Photo-Astrometric Vertical Tracer Density of the Milky Way II: Results from Gaia [PDF]

open access: green, 2021
Andrew Everall   +4 more
openalex   +1 more source

The Dichotomy of the Halo of the Milky Way

open access: yes, 2008
We summarize evidence that the halo of the Milky Way comprises two different, and broadly overlapping, stellar components. The two structures exhibit different chemical compositions, spatial distributions, and kinematics.
Akira Ohnishi   +8 more
core   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

open access: yesAdvanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio   +11 more
wiley   +1 more source

The Three-phase Evolution of the Milky Way

open access: yesThe Astrophysical Journal
We illustrate the formation and evolution of the Milky Way over cosmic time, utilizing a sample of 10 million red giant stars with full chemodynamical information, including metallicities and α -abundances from low-resolution Gaia XP spectra.
Vedant Chandra   +8 more
doaj   +1 more source

On Stellar Migration from Andromeda to the Milky Way [PDF]

open access: green, 2023
Lukas Gülzow   +2 more
openalex   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Measurement of Dependence of Microlensing Planet Frequency on the Host Star Mass and Galactocentric Distance by Using a Galactic Model

open access: yesThe Astrophysical Journal
We measure the dependence of planet frequency on host star mass, M _L , and distance from the Galactic center, R _L , using a sample of planets discovered by gravitational microlensing.
Kansuke Nunota   +8 more
doaj   +1 more source

Linnutee [PDF]

open access: yesMäetagused, 2002
Astronomically, the Milky Way is a big star system _ a galaxy. The word galaxy is derived from the Greek gala `milk'. In many languages the Milky Way's name is connected with milk. However, in Estonia this form of the name is rare.
Andres Kuperjanov
doaj  

The Age of the Milky Way Inner Halo

open access: yes, 2012
The Milky Way galaxy is observed to have multiple components with distinct properties, such as the bulge, disk, and halo. Unraveling the assembly history of these populations provides a powerful test to the theory of galaxy formation and evolution, but ...
A Dotter   +28 more
core   +1 more source

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