Results 101 to 110 of about 30,917 (286)

Tracing out the Northern Tidal Stream of the Sagittarius Dwarf Spheoridal Galaxy

, 2003
The main aim of this paper is to report two new detections of tidal debris in the northern stream of the Sagittarius dwarf galaxy located at 45 arcdeg and 55 arcdeg from the center of galaxy.
Antonio Aparicio, Arnold R., Bertelli G., David Martinez‐Delgado, Fux R., Gomez-Flechoso M. A., Ibata R., M. Angeles Gomez‐Flechoso, Ricardo Carrera, Sellwood J. A.   +9 more
core   +3 more sources

Selective Reflection of Chiral Ferroelectric Nematic Liquid Crystals Tuned by Electric Field Along the Helix Axis

Advanced Optical Materials, EarlyView.
It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel, Rohan Dharmarathna, James T. Gleeson, Robert J. Twieg, Samuel Sprunt, Antal Jákli   +5 more
wiley   +1 more source

HR-GO. II. Chemical Abundances of Low-E Retrograde Dynamically Tagged Groups: Revealing Thamnos as a Very Metal-poor Substructure

The Astrophysical Journal
Milky Way halo substructures identified in dynamical space are known to suffer from contamination from the Milky Way in situ stars, which makes their accreted origins uncertain. We present detailed chemical abundances of 35 stars belonging to two sets of
Renjing Xie, Zhen Yuan, Haining Li, Tadafumi Matsuno, Nicolas F. Martin, Ruizhi Zhang, Zhiqiang Yan, Federico Sestito, Guillaume F. Thomas, Projjwal Banerjee, Ruizheng Jiang, Linda Lombardo, David S. Aguado, Kohei Hattori, Gang Zhao   +14 more
doaj   +1 more source

Tracing Galaxy Formation with Stellar Halos I: Methods

, 2005
If the favored hierarchical cosmological model is correct, then the Milky Way system should have accreted ~100-200 luminous satellite galaxies in the past \~12 Gyr.
Fasano G., Grebel E. K., Ibata R., Ibata R. A., James S. Bullock, Kathryn V. Johnston, Knebe A., Lacey C., Moore B., Unavane M., Velazquez H.   +10 more
core   +1 more source

Near‐Infrared‐Driven Metal–Organic Frameworks‐Based Nanorobots for Controlled Photothermal‐Chemical Therapy Synergistic Induction of Cancer Cell Death

Advanced Robotics Research, EarlyView.
To achieve efficient cancer cell death, a bowl‐shaped PDA@UiO‐66@DOX nanorobot drug‐delivery nanoplatform was developed. Near‐infrared irradiation not only drives the nanorobot to exhibit self‐thermophoretic motion and elevates temperature but also triggers Doxorubicin (DOX) release via hyperthermia, enhancing cancer cells uptake of DOX and thereby ...
Tong Lin, Jie Yang, Yongcheng Li, Yuepeng Cai, Xiaosong Zhou, Ting Chen, Renfeng Dong   +6 more
wiley   +1 more source

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

EPJ 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

The impact of stellar rotation on the CNO abundance patterns in the Milky Way at low metallicities [PDF]

, 2006
We investigate the effect of new stellar models, which take rotation into account, computed for very low metallicities on the chemical evolution of the earliest phases of the Milky Way.
Chiappini, C., Ekstrom, S., Hirschi, R., Maeder, A., Matteucci, F., Meynet, G.   +5 more
core   +2 more sources

Evolution of the Milky Way halo by accretion of dwarf satellite galaxies

, 2011
Within the Cold Dark Matter scenario the hierarchical merging paradigm is the natural result to form massive galactic halos by the minor mergers of sub-halos and, by this, inherently their stellar halo.
Bouchard, Diemand, G. Hensler, Grebel, Johnston, M. Petrov, Mayer, Prantzos, Revaz, Tolstoy   +9 more
core   +1 more source

GSH‐Responsive Nanoparticles Enhance Hepatocellular Carcinoma Immunotherapy Through Synergistic Effects of Cuproptosis and PI3K Inhibitor Combination

Advanced Science, EarlyView.
ABSTRACT Cuproptosis, an emerging form of programmed cell death, is capable of inducing mitochondrial dysfunction. Moreover, the PI3K‐AKT‐mTOR signaling pathway contributes to tumor cell progression by reprogramming mitochondrial morphology and function.
Lei Wu, Jintong Na, Xiyu Liu, Dongsheng Tang, Zhungang Yang, Zheng Cao, Xinyue He, Haihua Xiao, Liping Zhong, Yuan Liao, Yongxiang Zhao   +10 more
wiley   +1 more source

The Milky Way Stellar Halo Is Twisted and Doubly Broken: Insights from DESI DR2 Milky Way Survey Observation

The Astrophysical Journal
Using K giants from the second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI) Milky Way Survey, we measure the shape, orientation, radial profile, and density anisotropies of the Milky Way (MW) stellar halo over 8 kpc < r _GC < 200
Songting Li, Wenting Wang, Sergey E. Koposov, João A. S. Amarante, Alis J. Deason, Nathan R. Sandford, Ting S. Li, Gustavo E. Medina, Jiaxin Han, Monica Valluri, Oleg Y. Gnedin, Namitha Kizhuprakkat, Andrew P. Cooper, Leandro Beraldo e Silva, Carlos Frenk, Raymond G. Carlberg, Mika Lambert, Tian Qiu, Jessica Nicole Aguilar, Steven Ahlen, Davide Bianchi, David Brooks, Todd Claybaugh, Axel de la Macorra, Peter Doel, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Gaston Gutierrez, Dick Joyce, Robert Kehoe, Anthony Kremin, Claire Lamman, Martin Landriau, Laurent Le Guillou, Ramon Miquel, Will Percival, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Ray Sharples, Joseph Harry Silber, David Sprayberry, Gregory Tarlé, Benjamin Alan Weaver, Hu Zou   +47 more
doaj   +1 more source