Hostname: page-component-54dcc4c588-dbm8p Total loading time: 0 Render date: 2025-10-07T01:29:28.872Z Has data issue: false hasContentIssue false
  • English
  • Français

3D hydrodynamical simulations to interpret observations ofstellar surfaces of red supergiant stars

Published online by Cambridge University Press:  23 May 2013

A. Chiavassa ,
B. Freytag  and
B. Plez
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
B. Freytag
Affiliation:
Centre de Recherche Astrophysique de Lyon, UMR 5574, CNRS, Université de Lyon, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
B. Plez
Affiliation:
Laboratoire Univers et Particules de Montpellier, Université Montpellier II, CNRS, 34095 Montpellier Cedex 05, France
Get access

Abstract

As red supergiants are the largest and brightest stars, they are ideal targets for thenew generation of sensitive, high resolution instrumentation that providesspectrophotometric, interferometric, astrometric, and imaging observables. Theinterpretation of the complex stellar surface images requires numerical simulations ofstellar convection that take into account multi-dimensional time-dependent radiationhydrodynamics with realistic input physics. We show the results obtained with the synergybetween the radiative hydrodynamics code CO5BOLD and the post-processing radiativetransfer code Optim3D. Such simulations support a proper and quantitativeanalysis of these observations, and the observations provide the theoretical work withstrong constraints.

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Chiavassa, A., Lacour, S., Millour, F., et al., 2010a, A&A, 511, A51
Chiavassa, A., Haubois, X., Young, J.S., et al., 2010b, A&A, 515, A12
Chiavassa, A., Pasquato, E., Jorissen, A., et al., 2011a, A&A, 528, A120
Chiavassa, A., Freytag, B., Masseron, T., & Plez, B., 2011b, A&A, 535, A22
Chiavassa, A., Plez, B., Josselin, E., & Freytag, B., 2009, A&A, 506, 1351
Freytag, B., Steffen, M., Ludwig, H.-G., et al., 2012, J. Comput. Phys., 231, 919 CrossRef
Freytag, B., & Hoefner, S., 2008, A&A, 483, 571
Freytag, B., Steffen, M., & Dorch, B., 2002, Astron. Nachr., 323, 213 3.0.CO;2-H>CrossRef
Gustafsson, B., Edvardsson, B., Eriksson, K., et al., 2008, A&A, 486, 951
Haubois, X., Perrin, G., Lacour, S., et al., 2009, A&A, 508, 923
Levesque, E.M., Massey, P., Olsen, K.A.G., et al., 2005, ApJ, 628, 973 CrossRef
Ohnaka, K., Weigelt, G., Millour, F., et al., 2011, A&A, 529, A163
Ohnaka, K., Hofmann, K.-H., Benisty, M., et al., 2009, A&A, 503, 183
Thiébaut, E., 2008, Proc. SPIE, Vol. 7013