Standing on the Shoulders of Giants: New Mass and Distance Estimates for Betelgeuse through Combined Evolutionary, Asteroseismic, and Hydrodynamic Simulations with MESA

  title={Standing on the Shoulders of Giants: New Mass and Distance Estimates for Betelgeuse through Combined Evolutionary, Asteroseismic, and Hydrodynamic Simulations with MESA},
  author={Meridith Joyce and Shing-Chi Leung and L{\'a}szl{\'o} Moln{\'a}r and Michael J. Ireland and Chiaki Kobayashi and Ken’ichi Nomoto},
  journal={arXiv: Solar and Stellar Astrophysics},
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 observational results include the release of new, processed photometric measurements collected with the space-based SMEI instrument prior to Betelgeuse's recent, unprecedented dimming event. We detect the first radial overtone in the photometric data and report a period of $185\pm13.5$ d. Our theoretical predictions include… 
The Betelgeuse Project. III. Merger Characteristics
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Early warning signals indicate a critical transition in Betelgeuse
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The Great Dimming of Betelgeuse seen by the Himawari-8 meteorological satellite
Betelgeuse, one of the most studied red supergiant stars1,2, dimmed in the optical range by ~1.2 mag between late 2019 and early 2020, reaching a historical minimum3–5 called ‘the Great Dimming’.
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Differential Speckle Polarimetry of Betelgeuse in 2019-2020: the rise is different from the fall
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Editor-in-Chief: Michel Breger, Assistant: Daniela Klotz, & Production Manager: Paul Beck, Editorial
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Keywords: equations : differentielles ; stabilite ; transport ; transfert de chaleur ; mecanique des : fluides ; ondes Reference Record created on 2005-11-18, modified on 2016-08-08
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We present optical spectrophotometry of the red supergiant Betelgeuse from 2020 February 15, during its recent unprecedented dimming episode. By comparing this spectrum to stellar atmosphere models
A procedure for fitting point sources in SMEI white-light full-sky maps
The Solar Mass Ejection Imager (SMEI) instrument consists of three CCD cameras with individual fields of view of 60° × 3° degrees that combined sweep a 160° arc of sky. SMEI covers the entire sky in
Modules for Experiments in Stellar Astrophysics (MESA) : Convective Boundaries, Element Diffusion, and Massive Star Explosions
We update the capabilities of the software instrument Modules for Experiments in Stellar Astrophysics (MESA) and enhance its ease of use and availability. Our new approach to locating convective