The past and future evolution of a star like Betelgeuse

  title={The past and future evolution of a star like Betelgeuse},
  author={Georges Meynet and Lionel Haemmerl{\'e} and Sylvia Ekstrom and Cyril Georgy and Jose H Groh and Andre Maeder},
  journal={Eas Publications Series},
We discuss the physics and the evolution of a typical massive star passing through an evolutionary stage similar to that of Betelgeuse. After a brief introduction recalling various observed parameters of Betelgeuse, we discuss the Pre-Main-Sequence phase (PMS), the Main-Sequence (MS) phase, the physics governing the duration of the first crossing of the HR diagram, the red supergiant stage (RSG), the post-red supergiant phases and the final fate of solar metallicity stars with masses between 9… 

Figures from this paper

Is Betelgeuse the Outcome of a Past Merger?
We explore the possibility that the star alpha Orionis (Betelgeuse) is the outcome of a merger that occurred in a low mass ratio (q = M2/M1 = 0.07 - 0.25) binary system some time in the past hundreds
The Betelgeuse Project: constraints from rotation
In order to constrain the evolutionary state of the red supergiant Betelgeuse, we have produced a suite of models with ZAMS masses from 15 to 25 Msun in intervals of 1 Msun including the effects of
Thermodynamics of dust condensation around the dimming Betelgeuse
Betelgeuse is one of the brightest red supergiant (RSG) stars because of its proximity to the Solar system. This makes it important when deducing the features and evolutionary phases of RSG stars.
Betelgeuse Constraints on Coupling between Axion-like Particles and Electrons
Axion-like particles (ALPs) can be produced by thermal processes in a stellar interior, escape from the star and, if sufficiently light, be converted into photons in the external Galactic magnetic
The close circumstellar environment of Betelgeuse - V. Rotation velocity and molecular envelope properties from ALMA
We observed Betelgeuse using ALMA's extended configuration in band 7 (f~340 GHz, {\lambda}~0.88 mm), resulting in a very high angular resolution of 18 mas. Using a solid body rotation model of the
Fundamental properties of core-collapse Supernova and GRB progenitors: predicting the look of massive stars before death
We investigate the fundamental properties of core-collapse Supernova (SN) progenitors from single stars at solar meta llicity. For this purpose, we combine Geneva stellar evolutionary models with
Constraints on Axionlike Particles from a Hard X-Ray Observation of Betelgeuse.
The first observation of Betelgeuse in hard x rays is used to perform a novel search for axionlike particles (ALPs) in the Galactic magnetic field, finding no significant excess of events above the expected background.
Algol anomaly or careful observations of its brightness? The values recorded for the magnitude of Algol in the medieval astronomical corpus
The historical evidence from the past two millennia show two problems concerning the star Algol (β Per): First, a critical variation in its brightness from a magnitude m ~ 2 in (1) Ptolemy’s Almagest
Constraining Weakly Interacting Slim Particles with a Massive Star and in the Laboratory
This doctoral thesis is devoted to constraining the allowed parameter space of weakly interacting slim particles (WISPs). WISPs are predicted by many extensions of the Standard Model of Particle
Space Photometry with Brite-Constellation
BRITE-Constellation is devoted to high-precision optical photometric monitoring of bright stars, distributed all over the Milky Way, in red and/or blue passbands. Photometry from space avoids the


Evolution of Massive Stars with Pulsation-driven Superwinds During the Red Supergiant Phase
Pulsations driven by partial ionization of hydrogen in the envelope are often considered important for driving winds from red supergiants (RSGs). In particular, it has been suggested by some authors
Effects of rotation on the evolution of primordial stars
Context. Though still beyond our observational abilities, Populati on III stars are interesting objects in many perspectives. T hey are responsible for the re-ionisation of the inter-galactic me
Yellow supergiants as supernova progenitors: an indication of strong mass loss for red supergiants?
Context. The increasing number of observed supernova events allows for finding the progenitor star even more frequently in archive images. In a few cases, the progenitor star is a yellow supergiant
Grids of stellar models with rotation - II. WR populations and supernovae/GRB progenitors at Z = 0.014
Context. In recent years, many very interesting observations have appeared concerning the positions of Wolf-Rayet (WR) stars in the Hertzsprung-Russell diagram (HRD), the number ratios of WR stars,
Stellar evolution with rotation. VII. - Low metallicity models and the blue to red supergiant ratio in the SMC
We calculate a grid of models with and without the eects of axial rotation for massive stars in the range of 9t o 60M and metallicity Z =0 :004 appropriate for the SMC. Remarkably, the ratios =crit
The magnetized bellows of Betelgeuse
We present calculations for a magnetised hybrid wind model for Betelegeuse ( Orionis). The model is a direct application of our previously derived theory, combining a canonical Weber-Davis (WD)
Mixing of CNO-cycled matter in massive stars
Aims. We test predictions of evolution models on mixing of CNO-cycled products in massive stars from a fundamental perspective. Relative changes within the theoretical C:N:O abundance ratios and the
The magnetic field of Betelgeuse: a local dynamo from giant convection cells?
Context. Betelgeuse is an M supergiant with a complex and extended atmosphere, which also harbors spots and giant granules at its surface. A possible magnetic field could contribute to the mass loss
Presupernova Evolution of Massive Single and Binary Stars
Understanding massive stars is essential for a variety of branches of astronomy including galaxy and star cluster evolution, nucleosynthesis and supernovae, pulsars, and black holes. It has become