Spectrophotometric studies of AP stars

Details Spectrophotometric studies of AP stars Spectrophotometric studies of AP stars

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..81..269b&link_type=abstract

Astrophysics and Space Science, vol. 81, no. 1-2, Jan. 1982, p. 269-274.

Astronomy and Astrophysics

Astrophysics

5

A Stars, Peculiar Stars, Stellar Evolution, Stellar Magnitude, Stellar Spectrophotometry, Stellar Temperature, Energy Distribution, Hydrogen, Magnetic Stars, Parallax, Stellar Envelopes, Stellar Mass

Scientific paper

The temperature, color index, bolometric correction and magnitude relationships of about 100 Ap stars are studied on the basis of observed energy distribution curves. It is found that the hotter Ap stars are bluer than their normal counterparts, perhaps due to the 4200 and 5200 A broad continuum features generally present in Ap stars alone. Bolometric corrections are independent of parallax measurements, with both Ap and normal stars following the same sequence of corrections when related to temperature. It is found that the Ap stars are slightly evolved, with their position in the HR diagram indicating the hydrogen shell burning phase, and their mass range is similar to that of normal A stars.

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