Results 101 to 110 of about 320,575 (284)

A Compact Object with a K-type Star Companion in the Solar Neighborhood: A Wide Postcommon Envelope Binary with a White Dwarf Candidate

open access: yesThe Astrophysical Journal
Post-common envelope binaries (PCEBs) consisting of a white dwarf (WD) plus a main-sequence star can constrain current prescriptions of common envelope evolution (CEE) and calibrate theoretical models of binary formation and evolution. Most PCEBs studied
Jie Lin   +5 more
doaj   +1 more source

Dust evolution during protoplanetary disk buildup enhances CO ice relative to water

open access: yesAstronomy & Astrophysics
Context. Water ice is expected to be the dominant volatile component of bodies formed in the outer Solar System. However, recent observations of comets and trans-Neptunian objects suggest that the relative abundances of ices can vary substantially, with ...
Drążkowska J.
doaj   +1 more source

Shape‐Controlled Guanine Self‐Assemblies for Stable and Fast‐Ion Solid–Electrolyte Interphases in Sustainable Li Metal Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The shape of guanine self‐assemblies is tuned by introducing alkyl (G8), fluoroalkyl (G8f), and oligoether (G8g) side chains into the G moiety. The scanning tunneling microscopy results and calculations show that the presence and type of the side chain strongly affect the G self‐assembly network.
So‐Huei Kang   +9 more
wiley   +1 more source

Numerical insights into disk accretion, eccentricity, and kinematics in the Class 0 phase

open access: yesAstronomy & Astrophysics
Context. The formation and early evolution of protoplanetary disks during a gravitational collapse are governed by a wide variety of physical processes.
Ahmad Adnan Ali   +6 more
doaj   +1 more source

JWST/NIRSpec Prospects on Transneptunian Objects

open access: yesFrontiers in Astronomy and Space Sciences, 2019
The transneptunian region has proven to be a valuable probe to test models of the formation and evolution of the solar system. To further advance our current knowledge of these early stages requires an increased knowledge of the physical properties of ...
Robin Métayer   +7 more
doaj   +1 more source

The origin of dust in galaxies revisited: the mechanism determining dust content

open access: yes, 2012
The origin of cosmic dust is a fundamental issue in planetary science. This paper revisits the origin of dust in galaxies, in particular, in the Milky Way, by using a chemical evolution model of a galaxy composed of stars, interstellar medium, metals ...
A Heger   +101 more
core   +1 more source

In‐Situ Solution Complexation for n‐Type Surface‐Energetics Reconstruction in 2.0 eV Ultra‐Wide‐Bandgap Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
A reactive in situ solution complexation strategy reconstructs the surface of 2.0 eV ultra‐wide‐bandgap perovskites via proton transfer. This chemical modulation eliminates metallic defects and induces a degenerate‐like n‐type surface, establishing an Ohmic tunneling contact.
Saemon Yoon   +11 more
wiley   +1 more source

Transforming the energy system - the evolution of the German technological system for solar cells [PDF]

open access: yes
To improve our understanding of processes involved in the formation and growth of new technological systems in the energy sector and to identify the associated key challenges for policy makers managing the transformation process, we examine the ...
Björn A. Andersson   +2 more
core  

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

open access: yesAdvanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu   +10 more
wiley   +1 more source

Next Generation Very Large Array Memo No. 6, Science Working Group 1: The Cradle of Life [PDF]

open access: yes, 2015
This paper discusses compelling science cases for a future long-baseline interferometer operating at millimeter and centimeter wavelengths, like the proposed Next Generation Vary Large Array (ngVLA).
Alexander, David   +35 more
core   +1 more source

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