Results 101 to 110 of about 104,909 (264)

A Comparison Between the Half-Light Radii, Luminosities, and UBV Colors of Globular Clusters in M31 and the Galaxy

, 2010
The Milky Way System and the Andromeda galaxy experienced radically different evolutionary histories. Nevertheless, it is found that these two galaxies ended up with globular cluster systems in which individual clusters have indistinguishable ...
Barmby, Brown, Giuricin, Hammer, Jester, Jordán, Law, Masters, Murphy, Nair, Peacock, Peacock, Perrett, Shapley, Sidney van den Bergh, van den Bergh, Wang   +16 more
core   +1 more source

Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens

Advanced Photonics Research, Volume 6, Issue 6, June 2025.
This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan, Wen Xiao, Minyong Guo, Tong Liu, Huanyang Chen, Jin‐Hui Chen   +5 more
wiley   +1 more source

On the Age Distribution of Classical Cepheids in the Galaxy

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar‐Julià, Francesca Figueras   +5 more
wiley   +1 more source

Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys

The Astrophysical Journal Supplement Series
Photometric stellar surveys now cover a large fraction of the sky, probe to fainter magnitudes than large-scale spectroscopic surveys, and are relatively free from the target selection biases often associated with such studies.
Jihye Hong, Timothy C. Beers, Young Sun Lee, Yang Huang, Yutaka Hirai, Jonathan Cabrera Garcia, Derek Shank, Shuai Xu, Haibo Yuan, Mohammad K. Mardini, Thomas Catapano, Gang Zhao, Zhou Fan, Jie Zheng, Wei Wang, Kefeng Tan, Jingkun Zhao, Chun Li   +17 more
doaj   +1 more source

Preemptive iodide treatment in the event of a nuclear disaster: The prepper's guide to the galaxy

Experimental Physiology, EarlyView.
Per Karkov Cramon, Søren Holm, Ronan M. G. Berg   +2 more
wiley   +1 more source

SunRISE Ground Radio Lab: Monitoring Solar Radio Bursts With an Expansive Array of Antennae at High Schools Nationwide

Earth and Space Science, Volume 12, Issue 6, June 2025.
Abstract The Sun Radio Interferometer Space Experiment (SunRISE) Ground Radio Lab (GRL) is a Science, Technology, Engineering, Arts, and Mathematics (STEAM) project, sponsored by NASA's SunRISE mission and organized by the University of Michigan College of Engineering. The project aims to engage and train the next generations of scholars.
M. Akhavan‐Tafti, S. L. Soni, C. Higgins, S. Fung, S. Lepri, J. Lux, J. Lazio, A. Romero‐Wolf   +7 more
wiley   +1 more source

The Stellar Disk Structure Revealed by the Mono-age Populations of the LAMOST Red Clump Star Sample

The Astronomical Journal
Understanding the structure of the Galactic disk is crucial for understanding the formation and evolutionary history of the Milky Way. This study examines the structure of the Galactic disk by analyzing a sample of 138,667 primary red clump (RC) stars ...
Zheng Yu, Bingqiu Chen, Jianhui Lian, Chun Wang, Xiaowei Liu   +4 more
doaj   +1 more source

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

Repeated Low‐Level Inflammatory Challenge Leads to Alterations in the TNF‐CXCL10 Signalling Pathway in Mouse Cerebral Endothelial Cells In Vitro

Journal of Neurochemistry, Volume 169, Issue 6, June 2025.
Intermittent, mild pro‐inflammatory systemic disease contributes to cerebrovascular pathology, however the mechanism of low‐level exposure causing injury remains unclear. Our RNA‐Seq analysis reveals continuous activation of tumour necrosis factor (TNF)‐Nuclear Factor kappa B (NF‐κB) signalling and multiple downstream inflammatory mediators in mouse ...
Megan Ritson, Dong Xia, Caroline Wheeler‐Jones, Helen B. Stolp   +3 more
wiley   +1 more source

Icarus Revisited: An Ancient, Metal-poor Accreted Stellar Stream in the Disk of the Milky Way

The Astrophysical Journal
The search for accreted satellites in the Galactic disk is a challenging task, to which Gaia plays a crucial role in synergy with ground-based spectroscopic surveys. In 2021, P. Re Fiorentin et al.
Paola Re Fiorentin, Alessandro Spagna, Mario G. Lattanzi, Michele Cignoni, Sara Vitali   +4 more
doaj   +1 more source