Zobrazeno 1 - 10
of 274
pro vyhledávání: '"Yasushi Suto"'
Autor:
Daisuke Takaishi, Yusuke Tsukamoto, Miyu Kido, Shigehisa Takakuwa, Yoshiaki Misugi, Yuki Kudoh, Yasushi Suto
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 20 (2024)
Observed protostellar outflows exhibit a variety of asymmetrical features, including remarkable unipolar outflows and bending outflows. Revealing the formation and early evolution of such asymmetrical protostellar outflows, especially the unipolar ou
Externí odkaz:
https://doaj.org/article/41348ecde8fc45989649867f9ea2cce4
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 26 (2023)
Nearly a hundred binary black holes (BBHs) have been discovered with gravitational-wave signals emitted at their merging events. Thus, it is quite natural to expect that significantly more abundant BBHs with wider separations remain undetected in the
Externí odkaz:
https://doaj.org/article/6ac15fcc362c406b8aca205275bde122
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 1, p 58 (2023)
While there have been many studies examining the stability of hierarchical triple systems, the meaning of “stability” is somewhat vague and has been interpreted differently in previous literatures. The present paper focuses on “Lagrange stabili
Externí odkaz:
https://doaj.org/article/e0df659479174a9fb4ca0589e1ce67f8
Publikováno v:
The Astrophysical Journal, Vol 941, Iss 2, p 175 (2022)
We perform intensity variability analyses (photometric analyses: the Lomb–Scargle periodogram, autocorrelation, and wavelet) and asteroseismic analysis of 92 Kepler solar-like main-sequence stars to understand the reliability of the measured stella
Externí odkaz:
https://doaj.org/article/becac4344bf34dac8d25b9adb9306ecc
Publikováno v:
Publications of the Astronomical Society of Japan. 75:103-119
We develop a general framework to compute photometric variations induced by the oblique rotation of a star with an axisymmetric inhomogeneous surface. We apply the framework to compute lightcurves of white dwarfs adopting two simple models of their s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03798a745b5fcb3e7c83fdfeaba2bf4e
https://doi.org/10.1093/pasj/psac093
https://doi.org/10.1093/pasj/psac093
Publikováno v:
Publications of the Astronomical Society of Japan. 74:857-876
We present an analytic model of the lightcurve variation for stars with non-evolving starspots on a differentially rotating surface. The Fourier coefficients of the harmonics of the rotation period are expressed in terms of the latitude of the spot,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17751e18d9aa024548df67eebe3bf4c7
https://doi.org/10.1093/pasj/psac039
https://doi.org/10.1093/pasj/psac039
We examine the stability of hierarchical triple systems using direct $N$-body simulations without adopting a secular perturbation approximation. We estimate their disruption timescales in addition to the mere stable/unstable criterion, with particula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a09d59e4f76cfca316563523f0f0908e
http://arxiv.org/abs/2207.12672
http://arxiv.org/abs/2207.12672
Recent ALMA observations on disk substructures suggest the presence of embedded protoplanets in a large number disks. The primordial configurations of these planetary systems can be deduced from the morphology of the disk substructure and serve as in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6717bc05e6a72992e13a8289129be5b
http://arxiv.org/abs/2204.08826
http://arxiv.org/abs/2204.08826
While there have been many studies examining the stability of hierarchical triple systems, the meaning of ``stability'' is somewhat vague and has been interpreted differently in previous literatures. The present paper focuses on ``Lagrange stability'
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94e69180765dd078cefc203d9f86ec75
We present the evolution of rotational directions of circumstellar disks in a triple protostar system simulated from a turbulent molecular cloud core with no magnetic field. We find a new formation pathway of a counter-rotating circumstellar disk in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb1d5bda621bb61f5e45bea126af103f
http://arxiv.org/abs/2108.01348
http://arxiv.org/abs/2108.01348