Intermediate and narrow band photometry of newly discovered CP 2 stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Early Stars, Peculiar Stars, Stellar Spectrophotometry, Cosmochemistry, H Beta Line, Magnetic Stars, Northern Sky, Variable Stars

Scientific paper

From Bidelman's list (1983) of northern stars of astrophysical interest eleven chemically peculiar early type (CP 2) stars were photometrically investigated to check the reported CP 2 character by means of the Δa photometry and to obtain Strömgren and Hβ values. The CP 2 character of all stars is verified, in one case the star belongs to a hotter subgroup than reported. One star (BD +24°3675) turns out to be variable and shows the largest Δa value ever measured. Besides this, two stars from the Bright Star Catalogue were found to be CP 2 stars.

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