Results 201 to 210 of about 15,242 (225)

Non-Adiabatic Stellar Pulsation. I.

The Astrophysical Journal, 1958
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Impact of Lattice Heterogeneity on Broadband Optical Retardation in Stacked 2D Perovskite Single Crystals

Advanced Functional Materials, EarlyView.
It is shown that interfaces between organic and inorganic layers govern long‐range stacking disorder and in‐plane anisotropy in 2D metal‐halide perovskites. By comparing single‐cation AB‐AB and ordered mixed‐cation ABCD‐ABCD stackings, SCXRD reveals enhanced mosaicity, while optics confirm high birefringence.
Yixuan Dou, Nicholas Nici, Sunhao Liu, Xiaoming Wang, Yanfa Yan, Carla Slebodnick, Lina Quan   +6 more
wiley   +1 more source

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Theoretical Stellar Pulsation Physics

Proceedings of the International Astronomical Union, 2022
AbstractPulsating stars play a crucial role in the calibration of the cosmic distance scale as well as in tracing the properties of the associated stellar populations. In the era of large observational surveys and precise astrometric missions, it is crucial to rely on accurate stellar pulsation models able to predict the observed behaviors for ...
M. Marconi, G. De Somma, R. Molinaro, I. Musella   +3 more
openaire   +1 more source

Stellar Pulsations

2013
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Suárez, J. C., Garrido, R., Balona, L. A., Christensen-Dalsgaard, J.   +3 more
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Relativistic Stellar Pulsations

1987
This thesis consists of studies on the topic of relativistic stellar pulsations. i) A new formalism for the numerical study of g-modes in neutron stars is developed. This formalism avoids pitfalls associated with previous formalisms when applied to the study of these low-frequency modes.
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Stellar Pulsation — Nonlinear Studies

2001
List of Figures. List of Tables. Preface. Contributing Authors. 1. A Historical Sketch of the Beat Cepheid Studies J.O. Petersen, M. Takeuti. 2. Double-Mode Stellar Pulsations Z. Kollath, J.R. Buchler. 3. The Multiperiodic Behavior of RR Lyrae Stars G. Kovacs. 4. RV Tauri Stars A.B. Fokin. 5. Pulsation and Mass Loss E.A. Dorfi, et al. 6.
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Stellar Pulsations and Stability

2002
Being a dynamical system, the star has diverse oscillatory eigenmodes. When one takes thermal processes into account, some of these appear to be unstable. The increment of such an instability γ, equal to the inverse time scale of the amplitude increase by a factor of e, is usually well below the pulsational frequency ω.
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Challenges In Stellar Pulsation

2010
Ever since some stars were found to pulsate in the early 20th century, stellar pulsation has been a major topic in astronomy and astrophysics. The huge amount of data recently available from observational surveys, new discoveries from space missions and studies of pulsating stars in low-metallicity environments have opened new perspectives and ...
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Stellar Pulsations and Stellar Evolution: Conflict, Cohabitation, or Symbiosis?

2012
While the analysis of stellar pulsations allows the determination of current properties of a star, stellar evolution models connect it with its previous history. In many cases results from both methods do not agree. In this review some classical and current cases of disagreement are presented.
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Inversion method in stellar pulsation

AIP Conference Proceedings, 2007
This is a presentation of the asteroseismological method (ROMOSC) implemented in the Bucharest Observatory to be used in the CoRoT mission. We will also present a calibration of this method with the similar one implemented in the MOST mission in the case of the star η Boo.
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