Thermal Stability of White Dwarfs Accreting Hydrogen-rich Matter and Progenitors of Type Ia Supernovae
- K. Nomoto, H. Saio, M. Kato, I. Hachisu
- Physics
- 14 March 2006
We revisit the properties of white dwarfs accreting hydrogen-rich matter, by constructing steady state models in which hydrogen shell burning consumes hydrogen at the same rate as the white dwarf…
On the effect of rotation on populations of classical Cepheids
- R. I. Anderson, H. Saio, S. Ekström, C. Georgy, G. Meynet
- PhysicsAstronomy & Astrophysics
- 4 March 2014
Context. Classical Cepheids are among the most important variable star types due to their nature as standard candles and have a long history of modeling in terms of stellar evolution. The effects of…
A type IIb model for supernova 1993J
- K. Nomoto, T. Suzuki, T. Shigeyama, S. Kumagai, H. Yamaoka, H. Saio
- PhysicsNature
- 1 August 1993
SPECTRAL analyses of supernovae have allowed them to be broadly divided into two classes, type I and type II. Supernova 1993J was identified1–3 as a type II supernova following the detection of a…
Theoretical light curves of the type IIB supernova 1993J
- T. Shigeyama, Tomoharu Suzuki, S. Kumagai, H. Saio, K. Nomoto, H. Yamaoka
- Physics
- 15 October 1993
Low-Frequency Nonradial Oscillations in Rotating Stars. I. Angular Dependence
We obtain the θ-dependence of the displacement vector of rotationally modulated low-frequency nonradial oscillations by numerically integrating Laplace's tidal equation as an eigenvalue problem with…
Asteroseismic measurement of surface-to-core rotation in a main-sequence A star, KIC 11145123
We have discovered rotationally split core g-mode triplets and surface p-mode triplets and quintuplets in a terminal age main-sequence A star, KIC 11145123, that shows both δ Sct pmode pulsations and…
MOST Detects g- and p-Modes in the B Supergiant HD 163899 (B2 Ib/II)
- H. Saio, R. Kuschnig, W. Weiss
- Physics, Geology
- 29 June 2006
The Microvariability and Oscillations of Stars (MOST) satellite observed the B supergiant HD 163899 (B2 Ib/II) for 37 days as a guide star and detected 48 frequencies ≲2.8 cycles day-1 with…
Inward Propagation of Nuclear-burning Shells in Merging C-O and He White Dwarfs
We have investigated the consequences of merging double white dwarf systems by calculating evolutionary models of accreting white dwarfs. We have considered two cases: a massive C-O white dwarf of ~1…
R-mode oscillations in uniformly rotating stars
- H. Saio
- Physics
- 15 May 1982
R-mode (or quasi-toroidal mode) oscillations in uniformly and slowly rotating stars have been investigated. Perturbations of the gravitational potential have been included. Applying an adiabatic…
A non-adiabatic analysis for axisymmetric pulsations of magnetic stars
- H. Saio
- Physics
- 1 July 2005
This paper presents the results of a non-adiabatic analysis for axisymmetric non-radial pulsations including the effect of a dipole magnetic field. Convection is assumed to be suppressed in the…
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