Author： SHAROVA O. I.
Publisher： Taylor & Francis Ltd
ISSN： 1055-6796
Source： Astronomical and Astrophysical Transactions, Vol.21, Iss.4-6, 2002-01, pp. : 271-277
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
The radio continuum variations from galactic planetary nebulae in the process of the central star evolution without helium flashes are considered. On the base of our distance scale we obtained empirical evolutionary dependences for the ionized mass and the hydrogen atom concentration. The parameters of a theoretical model of the interacting stellar winds (ISW) are determined to reach an agreement between empirical and theoretical dependences. In this model the time dependences are obtained for the intrinsic flux density at 15 GHz and for the critical frequency. The flux density may increase with rate of several percents until the kinematic age does not exceed 1000 years.
Related content
Access to resources
Recommend
By Bojičić I. S. Parker Q. A. Filipović M. D. Frew D. J.
Monthly Notices of the Royal Astronomical Society, Vol. 412, Iss. 1, 2011-03 ,pp. :
Chemical Evolution of the System of Galactic Planetary Nebulae
By Lunyova Y.V.
Astrophysics, Vol. 45, Iss. 3, 2002-07 ,pp. :
Structure and Evolution of Central Stars of Planetary Nebulae
Astrophysics and Space Science, Vol. 245, Iss. 2, 1996-01 ,pp. :