Results 151 to 160 of about 29,619 (304)

Identification of Blue Horizontal-branch Stars Using Synthetic SkyMapper Colors from Gaia XP Spectra

open access: yesThe Astrophysical Journal Supplement Series
Blue horizontal-branch (BHB) stars are ideal tracers for mapping the structure of the Galactic stellar halo. Traditionally, BHB sample stars are built from large-scale spectroscopic surveys utilizing their spectral features; however, the resulting sample
Guozhen Hu   +11 more
doaj   +1 more source

Evidence for two early accretion events that built the Milky Way stellar halo [PDF]

open access: green, 2019
GyuChul Myeong   +4 more
openalex   +1 more source

Progress in Surface Plasmon and Other Resonance Biosensors for Biomedical Applications

open access: yesAdvanced Materials Technologies, EarlyView.
This is the shortened version: Recent advancements in surface plasmon resonance and other optical resonance biosensors for biomedical applications are presented. Advanced sensing strategies are examined for the detection of diverse analytes, integration of nanomaterials and machine learning, and emerging nonplasmonic modes like guided mode resonance ...
Faten Bashar Kamal Eddin   +8 more
wiley   +1 more source

Adaptive Elastin‐Like Hydrogel with Unidirectional and Controllable Anisotropic Actuation for Soft Robotics and Tissue Engineering

open access: yesAdvanced Materials Technologies, EarlyView.
Fiber‐reinforced elastin‐like tubular scaffolds are engineered to achieve anisotropic and reversible actuation under external stimuli. By adjusting fiber's angle, actuation behavior is finely tuned, enabling distinct actuation responses, even within different regions of the same scaffold.
Federica Sallustio   +7 more
wiley   +1 more source

Constructing the Milky Way Stellar Halo in the Galactic Center by Direct Orbit Integration

open access: green, 2022
Chengqun Yang   +4 more
openalex   +2 more sources

BP3M: Bayesian Positions, Parallaxes, and Proper Motions Derived from the Hubble Space Telescope and Gaia Data

open access: yesThe Astrophysical Journal
We present a hierarchical Bayesian pipeline, BP3M , that measures positions, parallaxes, and proper motions (PMs) for cross-matched sources between Hubble Space Telescope (HST) images and Gaia—even for sparse fields ( N _* < 10 per image)—expanding from ...
Kevin A. McKinnon   +11 more
doaj   +1 more source

The Milky Way's Inner Halo: Stellar Halo & Dark Matter Halo

open access: yes, 2019
This presentation reviews the dynamical properties and origin of the stellar halo, and the distribution of dark matter in the inner Milky Way.
openaire   +2 more sources

Microlasers Made Entirely from Edible Substances

open access: yesAdvanced Optical Materials, EarlyView.
Several types of microlasers made completely out of edible substances are developed. They can be embedded directly into edible products and enable the sensing of various parameters, including sugar concentration, pH, the presence of bacteria, and exposure to too‐high temperatures.
Abdur Rehman Anwar   +4 more
wiley   +1 more source

Group Accretion in Milky Way-like Stellar Haloes

open access: yes
As galaxies form hierarchically, larger satellites may accrete alongside smaller companions in group infall events. This coordinated accretion is likely to have left signatures in the Milky Way's stellar halo at the present day. Our goal is to characterise the possible groups of companions that accompanied larger known accretion events of our Galaxy ...
Callingham, Thomas M., Helmi, Amina
openaire   +2 more sources

A SERS‐Based Antibody‐Aptamer Sandwich Assay for Extracellular Vesicle‐Associated Tau Detection Using Gold Nanoparticles

open access: yesAdvanced Sensor Research, EarlyView.
Tau protein plays a critical role in the pathology of Alzheimer's disease, utilizing extracellular vesicles (EVs) as a mechanism for intercellular transmission. This study develops a highly sensitive sandwich assay biosensor for detecting and quantifying tau‐associated EVs using surface‐enhanced Raman spectroscopy (SERS).
Saqer Al Abdullah   +6 more
wiley   +1 more source

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