A proposed pulsation driving mechanism for [gamma] doradus variable stars

Conference · Mon Jan 01 00:00:00 EST 2001

OSTI ID:975782

Kaye, A B ^[1]; Bradley, P A ^[2]; Cox, Arthur N; Neuforge, C M ^[3]; Guzik, J A ^[4]

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1. Anthony B.
2. Paul A.
3. Corinne M.
4. Joyce Ann

We propose a pulsation driving mechanism for {gamma} Doradus variable stars. This mechanism requires that the local convective timescale at the base of the envelope convection zone be comparable to or longer than the pulsation period. This mechanism explains both the red and blue edges of the {gamma} Dor instability strip. We predict that some cadidate {gamma} Dor stars summarized by Handler (1999) may actually be too hot or too cool to be {gamma} Dor variables.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 975782
• Report Number(s): LA-UR-01-5582; TRN: US201018%%869
• Resource Relation: Conference: "Submitted to: Proceedings of IAU185: Radial and Nonradial Pulsations as Probes of Stellar Physics, Leuven, Belgium, July 27-31, 2001"
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONVECTION
INSTABILITY
PHYSICS
PROBES
PULSATIONS
STARS
VARIABLE STARS