Results 301 to 310 of about 44,509 (325)

The Chemical Evolution of the Milky Way Disk

Space Science Reviews, 1997
Abstract The chemical evolution of the disk of our Galaxy is studied with numerical models assuming infall and a radially varying star formation rate (SFR). We propose a model with a minimal set of physically plausible assumptions which satisfies the main observational constraints of the disk, including those of the solar neighborhood.
openaire   +1 more source

The disk(s) of the Milky Way

AIP Conference Proceedings, 2013
We present a review of formation of the Milky Way's disk(s). We discuss the most recent disk formation and evolution scenarios that can be probed by the orbital eccentricities of stellar populations. These scenarios are included in two different frames, namely violent origin and secular evolution.
J. Concejo, O. Stanchev, Ts. B. Georgiev
openaire   +1 more source

The Evolution of the Milky Way Disk

2000
The Milky Way is a heterogeneous system, with at least three components (halo, bulge, disk) having very different chemical, photometric and kinematical properties. A reliable model for the evolution of the Milky Way accounting for those properties does not exist at present.
N. Prantzos, S. Boissier
openaire   +1 more source

Chemical evolution in the Milky Way Disk

AIP Conference Proceedings, 2006
Classical models of galactic evolution predict a smooth rise in heavy‐element abundance (metallicity) with time. We test this prediction with a new, large and unbiased sample of long‐lived stars in the solar neighbourhood and find that several of the key tests fail to support the classical predictions.
openaire   +2 more sources

Smooth X-rays Fill the Milky Way's Disk

Science, 2001
X-rays from the plane of our galaxy have exposed a hot spine of energy sizzling among the stars. But astrophysicists are mystified by blurs that point to processes they don9t yet understand. According to a report published online this week by Science (www.sciencexpress.org), new telescopes trained on the region haven9t spotted any obvious x-ray
openaire   +1 more source

Capabilities and limitations of rotating disk electrodes versus membrane electrode assemblies in the investigation of electrocatalysts

Nature Catalysis, 2022
Timon Lazaridis, Björn M Stühmeier, Hubert A Gasteiger   +2 more
exaly  

Bridging the gap between highly active oxygen reduction reaction catalysts and effective catalyst layers for proton exchange membrane fuel cells

Nature Energy, 2021
Jiantao Fan, Zhen Zhang, Siyu Ye
exaly  

Hydrogen-Bonded Supramolecular Liquid Crystal Polymers: Smart Materials with Stimuli-Responsive, Self-Healing, and Recyclable Properties

Chemical Reviews, 2022
Sean J D Lugger, Simon J A Houben, Michael Debije   +2 more
exaly  

The Disk of the Milky Way

Annals of the New York Academy of Sciences, 1992
openaire   +1 more source

Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

Chemical Reviews, 2021
Chi-Yeong Ahn, Sungjun Kim, Ok-Hee Kim
exaly