Results 71 to 80 of about 12,976 (291)
The period distribution of Cepheids: a test of stellar evolution
EPJ Web of Conferences, 2015 The period distributions of classical Cepheids in the Small and Large Magellanic Cloud are quite different. Using the TRILEGAL population synthesis code and a theoretical instability strip the ultimate aim is to understand these differences ...
Groenewegen M.A.T., Girardi L.
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SEARCH OF VARIABILITY OF THE COMPANION OF THE CLASSICAL CEPHEID EV SCT
Odessa Astronomical Publications, 2017 Spectroscopic observations of EV Sct obtained on 4m telescope at KPNO showed that the secondary component is probably situated within the instability strip (Kovtyukh & Andrievsky, 1999). Some observers (Pel, 1976; Mermilliod, 1987) have noted a signicant
I. A. Egorova, V. V. Kovtyukh
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The structure of the Cepheid instability strip
The Astrophysical Journal, 1990 About 100 classical Cepheids having color excesses on a homogeneous system with standard errors of 0.02 or less mag are used with the Feast-Walker period-luminosity-color relation to study the distribution of such stars in the instability strip. It is found that mean (B-V)mag is a better indicator of mean effective temperature than is mean B(i) - mean ...
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The instability strip of ZZ Ceti white dwarfs [PDF]
, 2014 peer reviewedThe determination of the location of the theoretical ZZ Ceti instability strip in the log g − Teff diagram has remained a challenge over the years, due to the lack of a suitable treatment for convection in these stars.
Brassard, P. +3 more
core
Advanced Functional Materials, EarlyView.Our study demonstrates Brønsted base‐mediated proton transfer for HOAc dissociation regulation in weakly acidic electrolytes, where imidazole achieves optimal dynamic proton equilibrium‐simultaneously stabilizing Zn anodes and enabling efficient Mn2+/MnO2 conversion.
Wenli Xin +7 more
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The Red Edge of the Cepheid Instability Strip [PDF]
International Astronomical Union Colloquium, 1993 AbstractRecent results of investigations of the nonequilibrium effects between gas and radiation on the red edge of the Cepheid instability strip are presented.
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Synthetic Nonlinear RR Lyrae Instability Strips [PDF]
International Astronomical Union Colloquium, 2002 AbstractA recently recognized problem is revisited, namely the discrepancy between the structure of the theoretical and the empirical, observationally derived RR Lyrae instability strips. The essence of the discrepancy is that the slope of the empirical fundamental-mode blue edge is much less steep than its theoretical counterpart.
R. Szabó +3 more
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Formation of Quasi‐Decoupling Interface on Li‐Metal Anodes in High Donor Electrolyte
Advanced Functional Materials, EarlyView.Li‐metal anode (LMA) is stabilized by introducing Li2Te2 as an electrolyte additive for Li‐metal batteries. Upon contact with Li, Li2Te2 spontaneously converts to Li2Te, which electronically isolates Li from dimethyl sulfoxide due to its large bandgap and minimal Bader charge transfer.
Hyerim Kim +9 more
wiley +1 more source
Modulational instability of a strip beam in a bulk type I quadratic medium
, 1998 The evolution of a strip (one-dimensional) fundamental beam with propagation distance owing to spatial modulational instabilities was analyzed in a quadratic medium near type I phase matching.
Stegeman, George I. +1 more
core +2 more sources
Tuning Separator Chemistry: Improving Zn Anode Compatibility via Functionalized Chitin Nanofibers
Advanced Functional Materials, EarlyView.Nanochitin derived from waste shrimp shells is used to fabricate separators for aqueous zinc batteries. By tuning the density of amine and carboxylic surface groups, water mobility at the separator interface is controlled, promoting uniform zinc deposition, suppressing dendrite growth, and enabling exceptional cycling stability exceeding 2000 h ...
Ibrahim Al Kathemi +6 more
wiley +1 more source