Results 91 to 100 of about 189,294 (310)

Near-Infrared photometry of four metal-rich Bulge globular clusters: NGC6304, NGC6569, NGC6637, NGC6638

, 2005
We present high-quality near-Infrared photometry of four Bulge metal-rich globular clusters, namely: NGC 6304, NGC 6569, NGC 6637 and NGC 6638. By using the observed Colour-Magnitude Diagrams we derived a photometric estimates of the cluster reddening ...
Bellazzini, Bellazzini, Caloi, Carretta, Carretta, Castellani, Clement, Cohen, Davidge, E. Valenti, F. R. Ferraro, Ferraro, Ferraro, Ferraro, Ferraro, Ferraro, Frogel, Fusi Pecci, Guarnieri, Harris, Heitsch, L. Origlia, McWilliam, Momany, Monaco, Montegriffo, Origlia, Origlia, Origlia, Ortolani, Ortolani, Ortolani, Ortolani Bica, Piotto, Rich, Riello, Rosenberg, Salaris, Savage, Schlegel, Sollima, Stetson, Straniero, Valenti, Valenti, Valenti, Zinn, Zoccali, Zoccali   +48 more
core   +1 more source

Extreme Transverse Magnetoresistance in TiZn16

Advanced Electronic Materials, EarlyView.
Extreme magnetoresistance is observed in TiZn16, despite its metallic nature and a highly complex electronic structure with multiple electron and hole Fermi surfaces. High‐magnetic‐field measurements further revealed the presence of a cylindrical open orbit, which may help resolve the origin of the extreme magnetoresistance.
Aaron Chan, Guoxin Zheng, Dechen Zhang, Yuan Zhu, Kaila Jenkins, Kuan‐Wen Chen, Haozhe Wang, Weiwei Xie, Brianna Billingsley, Tai Kong, Na Hyun Jo, Lu Li   +11 more
wiley   +1 more source

Evolutionary and Observational Properties of Red Giant Acoustic Glitch Signatures

The Astrophysical Journal, 2023
While solar-like oscillations in red giants have been observed at massive scales by the Kepler mission, few features of these oscillation mode frequencies, other than their global properties, have been exploited for stellar characterization.
David P. Saunders, J. M. Joel Ong, Sarbani Basu   +2 more
doaj   +1 more source

Hubble Space Telescope Photometry of the Dwarf Spheroidal Galaxy ESO 410-G005 [PDF]

, 2000
We present HST WFPC2 imaging of the nearby low-surface-brightness dwarf spheroidal galaxy ESO 410-G005, which has been resolved into stars for the first time. The resulting color-magnitude diagram for about 2500 stars shows a red giant branch branch with
Andrew E. Dolphin, Ata Sarajedini, Bertelli G., Doug Geisler, Eva K. Grebel, Feitzinger J. V., Heisler A. C., Igor D. Karachentsev, Karachentsev I. D., Laustsen S., Longmore A. J., Margarita E. Sharina, Patrick Seitzer, Paturel G., Paul W. Hodge, Puragra Guhathakurta, Soffner T., Valentina E. Karachentseva   +17 more
core   +2 more sources

A BAYESIAN APPROACH TO LOCATING THE RED GIANT BRANCH TIP MAGNITUDE. I. [PDF]

The Astrophysical Journal, 2011
11 pages, 18 ...
Conn, AR, Lewis, GF, Ibata, RA, Parker, QA, Zucker, DB, McConnachie, AW, Martin, NF, Irwin, MJ, Tanvir, N, Fardal, MA, Ferguson, AMN   +10 more
openaire   +4 more sources

Is There A Pure Electronic Ferroelectric?

Advanced Electronic Materials, EarlyView.
The search for faster, more reliable ferroelectric materials has shifted from traditional lattice‐driven ferroelectrics, which rely on slow ionic displacements, to electronic ferroelectrics, where polarization is governed by electronic ordering. This shift enables ultrafast switching, low‐field operation, and resistance to fatigue.
Xudong Wang, Guichen Teng, Xiangjian Meng, Zhenxiang Cheng, Tie Lin, Hao Shen, Xiaodan Wang, Jianlu Wang, Junhao Chu   +8 more
wiley   +1 more source

Metallicity of the Double Red Clump in the Milky Way Bulge

The Astrophysical Journal
We present a reanalysis of the metallicity of the double red clump (RC) stars from the Milky Way bulge. Two leading explanations for the existence of the double RC concern possible differences in chemical composition (multiple populations of stars) or ...
Zofia Budzik, Matylda Łukaszewicz, Radosław Poleski   +2 more
doaj   +1 more source

When do stars in 47 Tucanae lose their mass? [PDF]

, 2015
By examining the diffusion of young white dwarfs through the core of the globular cluster 47 Tucanae, we estimate the time when the progenitor star lost the bulk of its mass to become a white dwarf.
Antolini, Elisa, Goldsbury, Ryan, Heyl, Jaremy, Kalirai, Jason, Marigo, Paola, Parada, Javiera, Richer, Harvey   +6 more
core   +2 more sources

Mixed‐Phase TiO2 Nanotubes Enhance Ru Nanoparticle Activity for Hydrogen Evolution in pH‐Neutral Electrolytes

Advanced Energy and Sustainability Research, EarlyView.
Efficient water electrolysis in NaBr electrolyte is achieved using TiO2 nanotube supports decorated with Ru nanoparticles. A cooperative “job‐sharing” effect between the TiO2 proton‐storage support that provides protons to the Ru catalyst enhances hydrogen evolution, minimizes Ru demand and polarization losses, and delivers stable performance ...
Matan Sananis, Elena Davydova, Anna Breytus, Avner Rothschild   +3 more
wiley   +1 more source

Revealing the Fate of Exoplanet Systems: Asteroseismic Identification of Host Star in the Red Clump or Red Giant Branch

The Astrophysical Journal Letters
Determining the evolutionary stage of stars is crucial for understanding the evolution of exoplanetary systems. In this context, red giant branch (RGB) and red clump (RC) stars, which formed at stages in the later evolution of stars situated before and ...
Wen-Xu Lin, Sheng-Bang Qian, Li-Ying Zhu
doaj   +1 more source