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 


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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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