Radii of some Ap,Am and A stars |
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Authors: | G S D Babu |
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Institution: | (1) Uttar Pradesh State Observatory, Naini Tal, India |
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Abstract: | 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 magnitudesM
bo1 have been obtained and a plot between logT
e
andM
bo1 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 aboveM
bo1 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. |
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Keywords: | |
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