Results 91 to 100 of about 29,619 (304)

Metallicity and α-abundance for 48 Million Stars in Low-extinction Regions in the Milky Way

open access: yesThe Astrophysical Journal
We estimate ([M/H], [ α /M]) for 48 million giants and dwarfs in low-dust extinction regions from the Gaia DR3 XP spectra by using tree-based machine learning models trained on APOGEE DR17 and a metal-poor star sample from Li et al.
Kohei Hattori
doaj   +1 more source

The merger that led to the formation of the Milky Way’s inner stellar halo and thick disk [PDF]

open access: yesNature, 2018
The assembly process of our Galaxy can be retrieved using the motions and chemistry of individual stars. Chemo-dynamical studies of the nearby halo have long hinted at the presence of multiple components such as streams, clumps, duality and correlations between the stars' chemical abundances and orbital parameters.
Helmi, Amina   +7 more
openaire   +9 more sources

Intraoral Drug Delivery: Bridging the Gap Between Academic Research and Industrial Innovations

open access: yesAdvanced Functional Materials, EarlyView.
Intraoral drug delivery offers a promising route for systemic and localized therapies, yet challenges such as enzymatic degradation, limited permeability, and microbial interactions hinder efficacy. This figure highlights innovative strategies—mucoadhesive materials, enzyme inhibitors, and permeation enhancers—to overcome these barriers.
Soheil Haddadzadegan   +4 more
wiley   +1 more source

Disk Heating, Galactoseismology, and the Formation of Stellar Halos

open access: yesGalaxies, 2017
Deep photometric surveys of the Milky Way have revealed diffuse structures encircling our Galaxy far beyond the “classical” limits of the stellar disk. This paper reviews results from our own and other observational programs, which together suggest that,
Kathryn V. Johnston   +9 more
doaj   +1 more source

Build up of the Milky Way's stellar halo

open access: yes, 2020
Our understanding of the formation and evolution of the Milky Way is undergoing a revolution after Gaia's measurements. We have discovered a dominant population of radially biased stars (`Gaia-sausage' or `Gaia-Enceladus') which is attributed to a significant event in the history of the Milky Way, a merger with a relatively massive dwarf galaxy .
openaire   +2 more sources

ON THE SHOULDERS OF GIANTS: PROPERTIES OF THE STELLAR HALO AND THE MILKY WAY MASS DISTRIBUTION [PDF]

open access: yesThe Astrophysical Journal, 2014
Accepted for publication in ...
Joss Bland-Hawthorn   +4 more
openaire   +4 more sources

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

The Rapid Formation of the Metal-poor Milky Way

open access: yesThe Astrophysical Journal
Our understanding of the assembly timeline of the Milky Way has been transforming along with the dramatic increase in astrometric and spectroscopic data available over the past several years.
Turner Woody   +8 more
doaj   +1 more source

Formation of Milky Way-type stellar haloes in a Λ-CDM cosmology

open access: yesEPJ Web of Conferences, 2012
Recent observations suggest that the Milky Way stellar halo has a ‘dual nature’, meaning that both dissipational and dissipationless processes play a role in its build-up.
Font A.S.
doaj   +1 more source

ELVES. III. Environmental Quenching by Milky Way–mass Hosts

open access: yesThe Astrophysical Journal, 2023
Isolated dwarf galaxies usually exhibit robust star formation but satellite dwarf galaxies are often devoid of young stars, even in Milky Way–mass groups.
Jenny E. Greene   +5 more
doaj   +1 more source

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