上部主序星非徑向脈動不穩(wěn)定模
發(fā)布時間：2018-10-11 19:33
【摘要】：根據(jù)非局部和非定常恒星對流理論,計算了質(zhì)量3～30 M_⊙恒星演化模型低球諧階(l=1～4)p4～g39非徑向模的線性非絕熱脈動,研究了對流對非徑向脈動的影響.結(jié)果表明,對流對恒星非徑向脈動穩(wěn)定性有不可忽略的影響.然而假若不關(guān)注單個恒星和單個振動模的細節(jié),從總體上粗略地看,理論的脈動不穩(wěn)定區(qū)的大致位置和范圍并未受到對流的明顯影響.
[Abstract]:Based on the theory of nonlocal and unsteady stellar convection, the linear nonadiabatic pulsation of the low spherical harmonic (LQ _ 1 ~ 4) p4~g39 nonradial mode in the mass 3 ~ (30) M _ 298 stellar evolution model is calculated. The influence of convection on the nonradial pulsation is studied. The results show that the convection has a significant effect on the nonradial pulsation stability of stars. However, if we do not pay attention to the details of single star and single vibrational mode, the general position and range of the theoretical pulsating instability region are not obviously affected by convection.
【作者單位】： 中國科學(xué)院紫金山天文臺;中國科學(xué)院國家天文臺;
【基金】：國家自然科學(xué)基金項目(10773029、10573022)資助
【分類號】：P152
[Abstract]:Based on the theory of nonlocal and unsteady stellar convection, the linear nonadiabatic pulsation of the low spherical harmonic (LQ _ 1 ~ 4) p4~g39 nonradial mode in the mass 3 ~ (30) M _ 298 stellar evolution model is calculated. The influence of convection on the nonradial pulsation is studied. The results show that the convection has a significant effect on the nonradial pulsation stability of stars. However, if we do not pay attention to the details of single star and single vibrational mode, the general position and range of the theoretical pulsating instability region are not obviously affected by convection.
【作者單位】： 中國科學(xué)院紫金山天文臺;中國科學(xué)院國家天文臺;
【基金】：國家自然科學(xué)基金項目(10773029、10573022)資助
【分類號】：P152
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