A radiation-hydrodynamical simulation of the envelope of Procyon A

F. J. Robinson, P. Demarque, Y. C. Kim

Research output: Contribution to journalConference articlepeer-review

Abstract

We have performed 3D radiation-hydrodynamical simulations of the surface layers of Procyon A. The simulations include realistic input physics. Compared to the Sun, Procyon A has a convective flow with the following characteristics; (1) In regions of thin optical depth the temperature contrast is much higher in Procyon A than it is in the Sun; (2) The SAL is much shallower and broader in Procyon A than it is in the Sun; (3) The root mean square vertical velocity is much higher in Procyon A. The significant differences between surface layer convection in Procyon A and in the Sun may help explain the differences between their pulsation properties, as recently found by the MOST mission (Matthews 2004).

Original languageEnglish
Pages (from-to)602-605
Number of pages4
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number559
Publication statusPublished - 2004
EventSOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology: Towards a Golden Future - New Haven, CT, United States
Duration: 2004 Jul 122004 Jul 16

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

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