Astrophysics and Space Science

, Volume 50, Issue 2, pp 343–348 | Cite as

Radii of some Ap, Am and A stars

  • G. S. D. Babu


Based on the observed energy curves of nine Ap stars, three Am stars, four normal A stars and one F0 V magnetic star, their radii have been estimated.

Thence, the bolometric magnitudesMbo1 have been obtained and a plot between logT e andMbo1 of these stars shows that a majority of Ap and Am stars are a little above the zero-age Main-Sequence, suggesting that they are slightly more evolved as compared to the normal A stars.

The bolometric corrections derived from the aboveMbo1 are much closer to those computed by Mihalas than to the ones given by Davis and Webb, the latter being about O m 1 more negative than the former.


Energy Curve Magnetic Star Bolometric Correction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© D. Reidel Publishing Company 1977

Authors and Affiliations

  • G. S. D. Babu
    • 1
  1. 1.Uttar Pradesh State ObservatoryNaini TalIndia

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