Results 101 to 110 of about 30,715 (290)

Chemical fingerprinting of stellar populations in the Milky Way halo [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractThe idea of “chemically fingerprinting“ stars to their birth systems has been discussed over the last decade. Here we present an investigation of the chemical abundance patterns of halo substructures using high-resolution spectra. In particular, we study the abundances of the α-like element titanium (Ti) and the s-process elements yttrium (Y ...
openaire   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

The Rapid Formation of the Metal-poor Milky Way

The 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, Charlie Conroy, Phillip Cargile, Ana Bonaca, Vedant Chandra, Jiwon Jesse Han, Benjamin D. Johnson, Rohan P. Naidu, Yuan-Sen Ting   +8 more
doaj   +1 more source

Synthetic Nanobiology Actuated Lipometabolic Cell Factory for Autologous Tumor Immunotherapy

Advanced Functional Materials, EarlyView.
FA plays a crucial role in the interaction between tumor cells and the tumor microenvironment, especially for the immune response. A biocatalytic immunoenhancement strategy is developed to boost antitumor immunity by FA metabolic orientation to ceramide. Through the design of this delicate catalytic immunoenhancement strategy, the synthetic nanobiology
Shoujie Zhao, Yejing Zhu, Hengchao Yu, Jun Zhu, Bo Wang, Yu Qiao, Zhimin Tian, Junlong Zhao, Lei Liu   +8 more
wiley   +1 more source

Testing two alternatives theories to dark matter with the Milky Way dynamics

, 2015
Two alternative theories to dark matter are investigated by testing their ability to describe consistently the dynamics of the Milky Way. The first one refers to a modified gravity theory having a running gravitational constant and the second assumes ...
de Oliveira, P. L. C., Pacheco, J. A. de Freitas, Reinisch, G.   +2 more
core   +1 more source

Biomimetic Ion‐Orchestrated Hierarchical Armored Hydrogel Coating for Robust and Multifunctional Surface Protection

Advanced Functional Materials, EarlyView.
Inspired by the skin‐toughening mechanism of marine sponges, an ion‐orchestrated structural engineering strategy is proposed to regulate the surface microstructure of hydrogel coatings, enabling the in situ formation of a robust armor layer that enhances mechanical integrity and provides multifunctional protection by suppressing fouling attachment and ...
Wenshuai Yang, Ziqian Zhao, Weiyan Zhu, Lu Gong, Yongxiang Sun, Haoyu Yang, Ling Zhang, Wenfei Zhang, Hao Zhang, Fang Zhou, Xuwen Peng, Hongbo Zeng   +11 more
wiley   +1 more source

What Is Missing from the Local Stellar Halo?

The Astrophysical Journal
The Milky Way’s stellar halo, which extends to >100 kpc, encodes the evolutionary history of our Galaxy. However, most studies of the halo to date have been limited to within a few kiloparsecs of the Sun.
Katherine Sharpe, Rohan P. Naidu, Charlie Conroy   +2 more
doaj   +1 more source

Mapping the stellar structure of the Milky Way thick disk and halo using SEGUE photometry

, 2010
We map the stellar structure of the Galactic thick disk and halo by applying color-magnitude diagram (CMD) fitting to photometric data from the SEGUE survey, allowing, for the first time, a comprehensive analysis of their structure at both high and low ...
Abazajian, Andrew E. Dolphin, Beers, Bell, Belokurov, Belokurov, Benjamin, Bonifacio, Bovy, Brian Yanny, Chiba, de Jong, Gilmore, Grillmair, Gunn, Gunn, Hans-Walter Rix, Hogg, Ivezić, Jelte T. A. de Jong, Jurić, Kapteyn, Kazantzidis, Kroupa, Lupton, Majewski, Martin, Newberg, Nicolas F. Martin, Padmanabhan, Pier, Schlegel, Sesar, Sesar, Siegel, Skrutskie, Smith, Stoughton, Timothy C. Beers, Vallée, Yanny, Yanny, Yanny, York, Younger   +44 more
core   +1 more source

Build up of the Milky Way's stellar halo

, 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   +1 more source

Building up the Stellar Halo of the Milky Way

, 1998
We study numerical simulations of satellite galaxy disruption in a potential resembling that of the Milky Way. Our goal is to assess whether a merger origin for the stellar halo would leave observable fossil structure in the phase-space distribution of nearby stars.
Helmi, Amina, White, Simon D. M.
openaire   +2 more sources