The Spectrum of the Bp Star HD 36916

Details The Spectrum of the Bp Star HD 36916 The Spectrum of the Bp Star HD 36916

Dec 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969ap%26ss...5..403h&link_type=abstract

Astrophysics and Space Science, Volume 5, Issue 4, pp.403-419

Astronomy and Astrophysics

Astrophysics

12

Scientific paper

The spectrum of the peculiar Bp star HD 36916 has been studied on plates with dispersion 9.7 A/mm and compared with those of η Aur, B3V andi And, B8V. A comparison of the observed contours of Hβ, Hγ and of the Balmer discontinuity D with those computed by Mihalas gives the following results: HD 36916: θe=0.347, logg=3.8;i And: θe=0.383, logg=3.2; η Aur: θe=0.302, logg=3.6. HD 36916 presents the characteristics of the Si-λ4200 stars: strong deficiency in helium and probably also in oxygen and nitrogen, strong excess of silicon and strontium; 3984 Hg ii is present. Moreover this star also has characteristics which are not common to Si-λ4200 stars but rather to Mn stars: excess by a factor of ten of the elements of the iron group and an excess larger, probably of the order of 100, for manganese. The star is a member of the Sword subgroup of the Orion association.

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