Modules for Experiments in Stellar Astrophysics (MESA): pulsating variable stars, rotation, convective boundaries, and energy conservation

B Paxton, R Smolec, J Schwab… - The Astrophysical …, 2019 - iopscience.iop.org
We update the capabilities of the open-knowledge software instrument Modules for
Experiments in Stellar Astrophysics (MESA). RSP is a new functionality in MESAstar that …

Standing on the shoulders of giants: New mass and distance estimates for betelgeuse through combined evolutionary, asteroseismic, and hydrodynamic simulations …

M Joyce, SC Leung, L Molnár, M Ireland… - The Astrophysical …, 2020 - iopscience.iop.org
We conduct a rigorous examination of the nearby red supergiant Betelgeuse by drawing on
the synthesis of new observational data and three different modeling techniques. Our …

Order out of randomness: Self-organization processes in astrophysics

MJ Aschwanden, F Scholkmann, W Béthune… - Space Science …, 2018 - Springer
Self-organization is a property of dissipative nonlinear processes that are governed by a
global driving force and a local positive feedback mechanism, which creates regular …

Time series classification using Gaussian mixture models of reconstructed phase spaces

RJ Povinelli, MT Johnson… - IEEE Transactions on …, 2004 - ieeexplore.ieee.org
A new signal classification approach is presented that is based upon modeling the dynamics
of a system as they are captured in a reconstructed phase space. The modeling is done …

TESS observations of Cepheid stars: first light results

E Plachy, A Pál, A Bódi, P Szabo… - The Astrophysical …, 2021 - iopscience.iop.org
We present the first analysis of Cepheid stars observed by the TESS space mission in
Sectors 1–5. Our sample consists of 25 pulsators: ten fundamental mode, three overtone …

On the Blazhko effect in RR Lyrae stars

JR Buchler, Z Kolláth - The astrophysical journal, 2011 - iopscience.iop.org
The Blazhko effect is a long-term, generally irregular modulation of the light curves that
occurs in a sizeable number of RR Lyrae stars. The physical origin of the effect has been a …

[PDF][PDF] The OGLE collection of variable stars. Type II cepheids in the magellanic system

K Ulaczyk, R Poleski, P Pietrukowicz… - Acta …, 2018 - acta.astrouw.edu.pl
We present a nearly complete collection of type II Cepheids in the Magellanic System. The
sample consists of 338 objects: 285 and 53 variables in the Large and Small Magellanic …

[PDF][PDF] Self-organized criticality systems

MJ Aschwanden - Open Aca, 2013 - ulrich-von-kusserow.de
The following chapter provides an overview of the techniques used to understand Self-
Organised Criticality (SOC) by performing computer simulations. Those are of particular …

Period-doubling bifurcation and high-order resonances in RR Lyrae hydrodynamical models

Z Kolláth, L Molnár, R Szabó - Monthly Notices of the Royal …, 2011 - academic.oup.com
We investigated period doubling, a well-known phenomenon in dynamical systems, for the
first time in RR Lyrae models. These studies provide theoretical background for the recent …

Secular evolution in Mira variable pulsations

MR Templeton, JA Mattei, LA Willson - The Astronomical Journal, 2005 - iopscience.iop.org
Stellar evolution theory predicts that asymptotic giant branch (AGB) stars undergo a series of
short thermal pulses that significantly change their luminosity and mass on timescales of …