Numerical simulation and experimental research on cracking mechanism of twin-roll strip casting
Based on the three-dimensional field of molten pool and twin-roll strip casting experiments, this work verified the cracking mechanism of the strip by establishing mathematical model and rolling experiments. The results showed that due to the instability
Lv Zheng +7 more
doaj +1 more source
The occurrence of binary evolution pulsators in classical instability strip of RR Lyrae and Cepheid variables [PDF]
Single star evolution does not allow extremely low-mass stars to cross the classical instability strip (IS) during the Hubble time. However, within binary evolution framework low-mass stars can appear inside the IS once the mass transfer (MT) is taken ...
P. Karczmarek +7 more
semanticscholar +1 more source
Pulsating hot O subdwarfs in ω Centauri: mapping a unique instability strip on the extreme horizontal branch [PDF]
We present the results of an extensive survey for rapid pulsators among Extreme Horizontal Branch (EHB) stars in ω Cen. The observations performed consist of nearly 100 h of time-series photometry for several off-centre fields of the cluster, as well as ...
S. Randall +12 more
semanticscholar +1 more source
Spatiotemporal dynamics for a diffusive mussel–algae model near a Hopf bifurcation point
In this paper, the Hopf bifurcation and Turing instability for a mussel–algae model are investigated. Through analysis of the corresponding kinetic system, the existence and stability conditions of the equilibrium and the type of Hopf bifurcation are ...
Shihong Zhong, Xuehan Cheng, Biao Liu
doaj +1 more source
BLUE STRAGGLER MASSES FROM PULSATION PROPERTIES. II. TOPOLOGY OF THE INSTABILITY STRIP [PDF]
We present a new set of nonlinear, convective radial pulsation models for main-sequence stars computed assuming three metallicities: Z = 0.0001, 0.001, and 0.008. These chemical compositions bracket the metallicity of stellar systems hosting SX Phoenicis
Giuliana Fiorentino +7 more
semanticscholar +1 more source
CONTEMPORARY PROBLEMS OF ASTRONOMY: THE CHEMICAL COMPOSITION OF CEPHEIDS AND RELATED STARS
In the short form we present the main results of spectroscopic analysis of the different kind of Cepheids and related stars: double-mode Cepheids, s-Cepheids, non-variable supergiants situated inside the Cepheids instability strip and Cepheids first time
S. M. Andrievsky, V. G. Klochkova
doaj +1 more source
HST+COS spectra of the double white dwarf CSS 41177 place the secondary inside the pulsational instability strip [PDF]
We present Hubble Space Telescope + Cosmic Origins Spectrograph (HST+COS) data of the eclipsing double white dwarf binary CSS 41177. Due to the temperature difference between the two white dwarfs, the HST+COS far-ultraviolet data are dominated by the hot,
M. Bours +3 more
semanticscholar +1 more source
Resonant Mode Coupling in δ Scuti Stars
Delta Scuti ( δ Sct) variables are intermediate-mass stars that lie at the intersection of the main sequence and the instability strip on the Hertzsprung–Russell diagram.
Mohammed Mourabit, Nevin N. Weinberg
doaj +1 more source
Wear of Functionally Graded Coatings under Frictional Heating Conditions
Multilayered and functionally graded coatings are extensively used for protection against wear of the working surfaces of mechanisms and machines subjected to sliding contact.
Vladimir B. Zelentsov +2 more
doaj +1 more source
The instability strip and pulsation features of post-AGB star models [PDF]
T. Aikawa
openalex +2 more sources

