Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-18T10:22:21.476Z Has data issue: false hasContentIssue false
  • English
  • Français

Evidences for a large hot spot on the disk of Betelgeuse (α Ori)

Published online by Cambridge University Press:  23 January 2015

M. Montargès ,
P. Kervella ,
G. Perrin ,
A. Chiavassa  and
J. B. Le Bouquin
M. Montargès
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France email: miguel.montarges@obspm.fr
P. Kervella
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France email: miguel.montarges@obspm.fr
G. Perrin
Affiliation:
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris-Diderot, 5 place Jules Janssen, 92195 Meudon, France email: miguel.montarges@obspm.fr
A. Chiavassa
Affiliation:
Laboratoire Lagrange, UMR 7293, Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte d'Azur, BP. 4229, 06304 Nice Cedex 4, France
J. B. Le Bouquin
Affiliation:
UJF-Grenoble 1 /CNRS-INSU, Institut de Planétologie et dAstrophysique de Grenoble (IPAG) UMR 5274, Grenoble, France
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Massive evolved stars contribute to the chemical enrichment of the Galaxy. When they die as supernova but also through their mass loss during the several thousands of years of their red supergiant (RSG) phase. Unfortunately the mass loss mechanism remains poorly understood. Detailed study of the CSE and photosphere of nearby RSGs is required to constrain this scenario.

Betelgeuse is the closest RSG (197 pc) and therefore has a large apparent diameter (~ 42 mas) which makes it a very interesting target. For several years, our team has lead a multi-wavelength and multi-scale observing program to characterize its mass loss. We will review here our recent results in near-infrared interferometry.

Keywords

stars: individual: Betelgeusesupergiantsstars: late-typetechniques: interferometricinfrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 273 - 279
Copyright
Copyright © International Astronomical Union 2015 

References

Airapetian, V., Carpenter, K. G., & Ofman, L. 2010, ApJ 723, 1210Google Scholar
Aurière, M., Donati, J.-F., Konstantinova-Antova, R., et al. 2010, A&A 516, L2Google Scholar
Baron, F., Monnier, J. D., Kiss, L. L., et al. 2014, ApJ 785, 46Google Scholar
Chiavassa, A., Freytag, B., Masseron, T., & Plez, B. 2011, A&A 535, A22Google Scholar
Chiavassa, A., Haubois, X., Young, J. S., et al. 2010, A&A 515, A12Google Scholar
Chiavassa, A., Plez, B., Josselin, E., & Freytag, B. 2009, A&A 506, 1351Google Scholar
Decin, L., Cox, N. L. J., Royer, P., et al. 2012, A&A 548, A113Google Scholar
Freytag, B., Steffen, M., Ludwig, H.-G., et al. 2012, Journal of Computational Physics 231, 919CrossRefGoogle Scholar
Harper, G. M., Brown, A., & Guinan, E. F. 2008, AJ 135, 1430CrossRefGoogle Scholar
Haubois, X., Perrin, G., Lacour, S., et al. 2009, A&A 508, 923Google Scholar
Hestroffer, D. 1997, A&A 327, 199Google Scholar
Josselin, E. & Plez, B. 2007, A&A 469, 671Google Scholar
Le Bouquin, J.-B., Berger, J.-P., Lazareff, B., et al. 2011, A&A 535, A67Google Scholar
Levesque, E. M., Massey, P., Olsen, K. A. G., et al. 2005, ApJ 628, 973Google Scholar
Montargès, M., Kervella, P., Perrin, G., & Ohnaka, K. 2013, in Kervella, P., Le Bertre, T., & Perrin, G. (eds.), EAS Publications Series, Vol. 60 of EAS Publications Series, pp 167–172Google Scholar
Montargès, M., Kervella, P., Perrin, G., et al. 2014, A&A, SubmittedGoogle Scholar
Neilson, H. R., Lester, J. B., & Haubois, X. 2011, in Qain, S., Leung, K., Zhu, L., & Kwok, S. (eds.), Astronomical Society of the Pacific Conference Series, Vol. 451, p. 117Google Scholar
Ohnaka, K., Hofmann, K.-H., Benisty, M., et al. 2009, A&A 503, 183Google Scholar
Ohnaka, K., Weigelt, G., Millour, F., et al. 2011, A&A 529, A163Google Scholar
Perrin, G., Ridgway, S. T., Coudé du Foresto, V., et al. 2004, A&A 418, 675Google Scholar
Petrov, R. G., Malbet, F., Weigelt, G., et al. 2007, A&A 464, 1Google Scholar
Uitenbroek, H., Dupree, A. K., & Gilliland, R. L. 1998, AJ 116, 2501Google Scholar