Open AccessTurbulent convection and pulsational stability of variable stars – IV. The red edge of the δ Scuti instability strip
Author(s) -
Xiong D. R.,
Deng L.
Publication year - 2001
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2001.04308.x
Subject(s) - physics , instability strip , instability , stars , astrophysics , convection , turbulence , oscillation (cell signaling) , cepheid variable , astronomy , mechanics , biology , genetics
Using a non‐local time‐dependent statistical theory of convection, we made a linear pulsational instability analysis for stars in the mass range 1.4–3.0 M ⊙ . The results define a red edge for the δ Scuti instability strip, which fits the observational boundary very well. It is found that the dynamic coupling between convection and oscillation together with the turbulent viscosity are the two main damping mechanisms for low‐temperature stars.