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  • eigenfrequencies of rotationally and tidally distorted white dwarf models of stars

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1046
    • تعداد پرسش و پاسخ ها: 0
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    eigenfrequencies of rotationally and tidally distorted white dwarf models of stars
     
    in the present paper we have studied the eigenfrequencies of small adiabatic barotropic pseudo-radial and nonradial modes of oscillations of the white dwarf models of rotating stars in binary systems. in this work the methodology of mohan and saxena (in astrophys. space sci. 113:155,1985) has been used that utilizes the averaging technique of kippenhahn and thomas (in proc. iau colloq., vol. 4, p. 20, 1970) and certain results on roche equipotential as that given by kopal (in advances in astronomy and astrophysics, academic press, 1972). the objective of this study is to investigate the effects of rotation and/or tidal distortion on the periods of oscillations of rotationally and/or tidally distorted white dwarf models of stars assuming it to be the primary component of the binary system and rotating uniformly. the results of present study show that the eigenfrequencies (both radial and nonradial modes) of the rotationally distorted and rotationally and tidally distorted white dwarf model of stars in binary systems tend to decrease under the influence of rotational distortions and rotational and tidal distortions, respectively. however, results are contrary for tidally distorted white dwarf model of stars.

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