Results 11 to 20 of about 4,382 (198)

The Nature and Origins of Sub-Neptune Size Planets. [PDF]

open access: yesJ Geophys Res Planets, 2021
Abstract Planets intermediate in size between the Earth and Neptune, and orbiting closer to their host stars than Mercury does the Sun, are the most common type of planet revealed by exoplanet surveys over the last quarter century. Results from NASA's Kepler mission have revealed a bimodality in the radius distribution of these objects, with a relative
Bean JL, Raymond SN, Owen JE.
europepmc   +2 more sources

Asteroseismology of High-Mass Stars: New Insights of Stellar Interiors With Space Telescopes

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Massive stars are important metal factories in the Universe. They have short and energetic lives, and many of them inevitably explode as a supernova and become a neutron star or black hole.
Dominic Bowman
exaly   +3 more sources

White-Dwarf Asteroseismology With the Kepler Space Telescope

open access: yesFrontiers in Astronomy and Space Sciences, 2020
In the course of their evolution, white-dwarf stars go through at least one phase of variability in which the global pulsations they undergo allow astronomers to peer into their interiors, making it possible to shed light on their deep inner structure ...
Alejandro Hugo Corsico
exaly   +3 more sources

Asteroseismology

open access: yes
This is the author accepted manuscript version of: Bowman, D.M. and Bugnet, L. (2025) Asteroseismology. In: Mandel, I. (eds.) Encyclopedia of Astrophysics. Vol. 2, pp. 133-153.UK: Elsevier.
Bowman, Dominic M., Bugnet, Lisa
core   +4 more sources

Asteroseismology of beta Cephei and Be type stars [PDF]

open access: yes, 2012
The thesis focuses on the asteroseismology of main sequence B-type stars, particularly \(\beta\) Cephei and Be stars. Photometric observations of these stars were analysed in order to detect stellar oscillations.
Goss, Kym Jeanette Frances
core   +7 more sources

Asteroseismology from the main sequence to giant stars [PDF]

open access: yes, 2010
The thesis focuses on the use of asteroseismology to probe the structure of stellar sources. By observing pulsational variability, a detailed description of the interior of stars, and the determination of stellar parameters can be obtained.
Tarrant, Neil James
core   +7 more sources

A Novel Approach to Classify Telescopic Sensors Data Using Bidirectional-Gated Recurrent Neural Networks

open access: yesApplied Sciences, 2022
Asteroseismology studies the physical structure of stars by analyzing their solar-type oscillations as seismic waves and frequency spectra. The physical processes in stars and oscillations are similar to the Sun, which is more evolved to the red-giant ...
Ali Raza   +5 more
doaj   +1 more source

Equatorially trapped Rossby waves in radiative stars

open access: yesAstronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023
Abstract Observations by recent space missions reported the detection of Rossby waves (r‐modes) in light curves of many stars (mostly A, B, and F spectral types) with outer radiative envelope. This article aims to study the theoretical dynamics of Rossby‐type waves in such stars. Hydrodynamic equations in a rotating frame were split into horizontal and
Mariam Albekioni   +4 more
wiley   +1 more source

The Pre-main Sequence: Challenges and Prospects for Asteroseismology

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Stars do not simply pop up on the main sequence. Before the stars arrive on the zero-age main sequence, they form in the collapses of molecular clouds, gain matter through accretion processes, and compress their cores until hydrogen can burn in full ...
Konstanze Zwintz, Thomas Steindl
doaj   +1 more source

FRA–A new fast, robust, and automated pipeline for the detection and measurement of solar‐like oscillations in time‐series photometry of red‐giant stars

open access: yesAstronomische Nachrichten, Volume 344, Issue 5, June 2023., 2023
Abstract We developed, tested, and validated a new Fast, Robust, and Automated (FRA) tool to detect solar‐like oscillations. FRA is based on the detection and measurement of the frequency of maximum oscillation power νmax$$ {\nu}_{\mathrm{max}} $$, without relying on the detection of a regular frequency spacing to guide the search.
Charlotte Gehan   +3 more
wiley   +1 more source

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