Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-29T08:58:38.441Z Has data issue: false hasContentIssue false
  • English
  • Français

3-D Convection Models: Are They Compatible with 1-D Models?

Published online by Cambridge University Press:  12 April 2016

Å. Nordlund  and
R. F. Stein
Å. Nordlund
Affiliation:
Theoretical Astrophysics Center and Astronomical Observatory, Juliane Maries Vej 30, DK-2100 Copenhagen Ø, Denmark
R. F. Stein
Affiliation:
Physics and Astronomy Department, Michigan State University, East Lansing, MI 48824, USA

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.

We review properties of stellar convection, as derived from detailed 3-D numerical modeling, and assess to what extent 1-D models are able to provide a fair representation of stellar structure in various regions of the HR diagram. We point out a number of problems and discrepancies that are inevitable when using conventional 1-D models. The problems originate mainly in the surface layers, where horizontal fluctuations become particularly large, and where convective energy transport gives way to radiation. We conclude that it is necessary (and possible) to use three-dimensional models of these layers, in order to avoid the uncertainties and inaccuracies associated with 1-D representations.

Type
Part 5. Theoretical Models of Classical Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 176: The Impact of Large-Scale Surveys on Pulsating Star Research , 2000 , pp. 362 - 372
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Asplund, M., Nordlund, Å., & Trampedach, R. 1999a, A&A, 346, L17 Google Scholar
Asplund, M., Ludwig, H.-G., Nordlund, Å., & Stein, R.F. 1999b, A&A, (in preparation)Google Scholar
Asplund, M., Nordlund, Å., & Trampedach, R. 1999c, in ASP Conf. Ser. Vol. 173, Theory and Tests of Convection in Stellar Structure, ed. Giménez, A., Guinan, E.F., & Montesinos, B. (San Francisco: ASP), 221 Google Scholar
Asplund, M., Nordlund, Å., Trampedach, R., Allende Prieto, C., & Stein, R.F. 1999d, A&A (submitted)Google Scholar
Basu, S. & Antia, H.M. 1997, MNRAS, 287, 189 CrossRefGoogle Scholar
Böhm-Vitense, E. 1958, ZfAp, 46, 108 Google Scholar
Canuto, V.M. 1996, ApJ, 467, 385 CrossRefGoogle Scholar
Christensen-Dalsgaard, J., Gough, D.O., & Thompson, M.J. 1991, ApJ, 378, 413 CrossRefGoogle Scholar
Dravins, D., Lindegren, L., & Nordlund, Å. 1981, A&A, 96, 345 Google Scholar
Gardiner, R.B., Kupka, F., & Smalley, B. 1999, A&A, 347, 876 Google Scholar
Lites, B.W., Nordlund, Å., & Scharmer, G.S. 1989, in NATO ASI C263, Solar and Stellar Granulation, ed. Rutten, R. & Severino, G. (Dordrecht: Kluwer), 349 CrossRefGoogle Scholar
Ludwig, H.G., Freytag, B., & Steffen, M. 1999, A&A, 346, 111 Google Scholar
Nordlund, Å. 1980a, in Lecture Notes in Physics, Vol. 114, Stellar Turbulence, ed. Gray, D.F. & Linsky, J.F. (Heidelberg: Springer), 17 CrossRefGoogle Scholar
Nordlund, Å. 1980b, in Lecture Notes in Physics, Vol. 114, Stellar Turbulence, ed. Gray, D.F. & Linsky, J.F. (Heidelberg: Springer), 213 CrossRefGoogle Scholar
Nordlund, Å. 1999, http://www.astro.ku.dk/˜aake/talks/Budapest99 Google Scholar
Nordlund, Å., Spruit, H.C., Ludwig, H.-G., & Trampedach, R. 1997, A&A, 328, 229 Google Scholar
Nordlund, Å. & Stein, R.F. 1997, in Solar Convection, Oscillations and their Relationship, ed. Pijpers, F.P., Christensen-Dalsgaard, J., & Rosenthal, C.S. (Dordrecht: Kluwer), 79 Google Scholar
Nordlund, Å. and Stein, R.F. 1999a, in ASP Conf. Ser. Vol. 173, Theory and Tests of Convection in Stellar Structure, ed. Giménez, A., Guinan, E.F., & Montesinos, B. (San Francisco: ASP), 91 Google Scholar
Nordlund, Å. & Stein, R.F. 1999b, in Proc. IAU Symp. 185, ed. Deubner, F.L. & Christensen-Dalsgaard, J. (Dordrecht: Kluwer), in pressGoogle Scholar
Nordlund, Å. & Stein, R.F. 1999c, in ASSL Vol. 240, Proc. Internat. Conf. on Numerical Astrophysics 1998 (NAP98) ed. Miyama, S.M., Tomisaka, K., & Hanagawa, T. (Dordrecht: Kluwer), 293 Google Scholar
Rosenthal, C.S., Christensen-Dalsgaard, J., Nordlund, Å., Stein, R.F., & Trampedach, R. 1999, A&A, 351, 689 Google Scholar
Stein, R.F. & Nordlund, Å. 1998, ApJ, 499, 914 CrossRefGoogle Scholar