Results 61 to 70 of about 180,740 (304)

On the red giant branch mass loss in 47 Tucanae: Constraints from the horizontal branch morphology [PDF]

, 2016
We obtain stringent constraints on the actual efficiency of mass loss for red giant branch stars in the Galactic globular cluster 47 Tuc, by comparing synthetic modeling based on stellar evolution tracks with the observed distribution of stars along the ...
Cassisi, S, Pietrinferni, A, Salaris, M
core   +2 more sources

Lithium in M 67: From the main sequence to the red giant branch [PDF]

Astronomy & Astrophysics, 2012
14 pages, 4 figures, accepted by A& ...
G. Pace, Jorge Melendez, J. D. do Nascimento, S. Théado, Matthieu Castro   +4 more
openaire   +4 more sources

Iridium Oxide Inverse Opal Anodes with Tailored Porosity for Efficient PEM Electrolysis

Advanced Functional Materials, EarlyView.
The synthesis of Iridium‐based Inverse Opals (Ir‐IO) is reported as electrocatalyst for Proton exchange membrane water electrolysis (PEM‐WE). Using the developed protocol it produces highly porous materials consisting either of metallic, oxidic Iridium or a combination thereof with large surface areas.
Sebastian Möhle, Matthias Kroschel, Peter Strasser   +2 more
wiley   +1 more source

Low Mass Stars or Intermediate Mass Stars? The Stellar Origin of Presolar Oxide Grains Revealed by Their Isotopic Composition

Frontiers in Astronomy and Space Sciences, 2021
Among presolar grains, oxide ones are made of oxygen, aluminum, and a small fraction of magnesium, produced by the 26Al decay. The largest part of presolar oxide grains belong to the so-called group 1 and 2, which have been suggested to form in Red Giant
S. Palmerini, S. Palmerini, S. Cristallo, S. Cristallo, M. Busso, M. Busso, M. La Cognata, M. L. Sergi, M. L. Sergi, D. Vescovi, D. Vescovi, D. Vescovi   +11 more
doaj   +1 more source

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

HST observations of the cometary blue compact dwarf galaxy UGC 4483: a relatively young galaxy? [PDF]

, 2001
We present V and I photometry of the resolved stars in the cometary blue compact dwarf galaxy UGC 4483 using Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) images. The resulting I vs.
Bertelli G., Legrand F., Noeske K. G., Pilyugin L. S., Roy J.-R., Tantalo R., Tikhonov N. A., Trinh X. Thuan, Yuri I. Izotov   +8 more
core   +2 more sources

Membrane Fusion‐Inspired Nanomaterials: Emerging Strategies for Infectious Disease and Cancer Diagnostics

Advanced Healthcare Materials, EarlyView.
Membrane fusion‐inspired nanomaterials offer transformative potential in diagnostics by mimicking natural fusion processes to achieve highly sensitive and specific detection of disease biomarkers. This review highlights recent advancements in nanomaterial functionalization strategies, signal amplification systems, and stimuli‐responsive fusion designs,
Sojeong Lee, Khulan Nyamzaya, Jueun Han, Yejin Song, Jihee Lee, Jung Hyun Jo, Seungmin Bang, Eun‐Kyung Lim, Seungjoo Haam, Eunjung Kim   +9 more
wiley   +1 more source

Multiple stellar populations in the Galactic globular cluster NGC 6752

, 2009
We have carried out high-precision photometry on a large number of archival HST images of the Galactic globular cluster NGC 6752, to search for signs of multiple stellar populations. We find a broadened main sequence, and demonstrate that this broadening
A. F. Marino, A. P. Milone, Anderson, Anderson, Anderson, Anderson, Bedin, Bedin, Cassisi, D'Antona, G. Piotto, I. R. King, J. Anderson, Kroupa, L. Malavolta, L. R. Bedin, Mackey, Milone, Milone, Momany, Norris, Pancino, Piotto, Piotto, Piotto, Renzini, Rubenstein, S. Villanova, Valdes, Ventura, Villanova, Y. Momany, Yong, Yong, Yong   +34 more
core   +1 more source

The spectroscopic indistinguishability of red giant branch and red clump stars [PDF]

Astronomy & Astrophysics, 2016
Stellar spectroscopy provides useful information on the physical properties of stars such as effective temperature, metallicity and surface gravity (log g). However, those photospheric characteristics are often hampered by systematic uncertainties. The joint spectro-seismo project (APOKASC) of field red giants has revealed a puzzling offset between the
Keith Hawkins, Keith Hawkins, Thomas Masseron   +2 more
openaire   +4 more sources

Advances in Topological Thermoelectrics: Harnessing Quantum Materials for Energy Applications

Advanced Materials, EarlyView.
Topological materials offer a novel platform for thermoelectric energy conversion through unique band features, including band inversion, linear Dirac bands, surface states, and Berry curvature. These quantum characteristics enable enhanced longitudinal and transverse thermoelectric effects, establishing topological thermoelectrics as a promising ...
Guangsai Yang, Lina Sang, Chao Zhang, Khay See, Alex Hamilton, Michael Fuhrer, Ning Ye, G. Jeffrey Snyder, Xiaolin Wang   +8 more
wiley   +1 more source