Results 81 to 90 of about 2,497,137 (295)
Lessons from the High-resolution Spectroscopy of AW UMa and ϵ CrA: Is the Lucy Model Valid?
The Astronomical JournalA re-examination of high-resolution spectral monitoring of the W UMa–type binaries AW UMa and ϵ CrA casts doubt on the widely utilized L. B. Lucy model of contact binaries.
Slavek M. Rucinski
doaj +1 more source
Roche Configurations of Two Near-Contact Binaries do CAS and SW Lyn [PDF]
Journal of Astronomy and Space Sciences, 1999 Light curves of two near-contact binaries DO Cas and SW Lyn are analyzed to investigate their Roche configurations. We made new BVR observations for DO Cas and employed the published observation data for SW Lyn.
Ho-Il Kim +4 more
doaj
Advanced Engineering Materials, EarlyView.HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan +4 more
wiley +1 more source
Detection of Contact Binary Candidates Observed By TESS Using the Autoencoder Neural Network
The Astronomical JournalA contact binary may be the progenitor of a red nova that eventually produces a merger event and have a cut-off period of around 0.2 days. Therefore, a large number of contact binaries is needed to search for the progenitor of red novae and to study the ...
Xu Ding +3 more
doaj +1 more source
Effects of Mg on Microstructure and Solidification of a Hypereutectic Zn–8 wt.%Al Alloy
Advanced Engineering Materials, EarlyView.An appreciable set of results involving thermal data, microstructure, chemical composition, and microstructural growth laws is reported for ZnAlMg alloys. Such results demonstrate that ZnAlMg alloys have high potential for applications in automotive self‐lubricating components, batteries, and electrical systems.
Raí B. de Sousa +6 more
wiley +1 more source
Near-Contact Binaries on the Path to Contact Binaries
Acta Astronomica22 pages, 5 figures, to appear in Acta ...
openaire +2 more sources
Ismaili Contact (Europe) Silver Jubilee [PDF]
, 1982 Ismaili Contact (Europe) Silver Jubilee - Salegreh 1982https://ecommons.aku.edu/arch_research_publications_secondary-sources/1033/thumbnail ...
Ismaili Contact,
core +1 more source
Fundamental Parameters for Totally Eclipsing Contact Binaries Observed by TESS
The Astrophysical JournalTotally eclipsing contact binaries provide a unique opportunity to accurately determine mass ratios through photometric methods alone, eliminating the need for spectroscopic data.
Xu Ding +7 more
doaj +1 more source
Non-binary protograph low-density parity-check codes for space communications [PDF]
, 2012 Protograph-based non-binary low-density parity-check (LDPC) codes with ultra-sparse parity-check matrices are compared with binary LDPC and turbo codes (TCs) from space communication standards.
Paolini, Enrico +7 more
core +1 more source
Theories of Contact Binary Stars [PDF]
Symposium - International Astronomical Union, 1980 We review and contrast two current theories for the structure of contact binary stars: discontinuity theory and thermal relaxation oscillation theory. We find that the two theories are complementary with the crucial theoretical issue to be resolved being the secular stability of the temperature inversion layer. Critical observational tests remain to be
openaire +1 more source