A radiation-hydrodynamical simulation of the envelope of Procyon A

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

A radiation-hydrodynamical simulation of the envelope of Procyon A

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

Department of Astronomy

Research output: Contribution to journal › Conference article › peer-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 language	English
Pages (from-to)	602-605
Number of pages	4
Journal	European Space Agency, (Special Publication) ESA SP
Issue number	559
Publication status	Published - 2004
Event	SOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology: Towards a Golden Future - New Haven, CT, United States Duration: 2004 Jul 12 → 2004 Jul 16

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Space and Planetary Science

Cite this

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title = "A radiation-hydrodynamical simulation of the envelope of Procyon A",

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).",

author = "Robinson, {F. J.} and P. Demarque and Kim, {Y. C.}",

year = "2004",

language = "English",

pages = "602--605",

journal = "European Space Agency, (Special Publication) ESA SP",

issn = "0379-6566",

publisher = "European Space Agency",

number = "559",

note = "SOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology: Towards a Golden Future ; Conference date: 12-07-2004 Through 16-07-2004",

}

TY - JOUR

T1 - A radiation-hydrodynamical simulation of the envelope of Procyon A

AU - Robinson, F. J.

AU - Demarque, P.

AU - Kim, Y. C.

PY - 2004

Y1 - 2004

N2 - 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).

AB - 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).

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M3 - Conference article

AN - SCOPUS:22144475172

SN - 0379-6566

SP - 602

EP - 605

JO - European Space Agency, (Special Publication) ESA SP

JF - European Space Agency, (Special Publication) ESA SP

IS - 559

T2 - SOHO 14/GONG 2004 Workshop - Helio- and Asteroseismology: Towards a Golden Future

Y2 - 12 July 2004 through 16 July 2004

ER -

A radiation-hydrodynamical simulation of the envelope of Procyon A

Abstract

All Science Journal Classification (ASJC) codes

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