Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...216...37c&link_type=abstract
Astrophysical Journal, Part 1, vol. 216, Aug. 15, 1977, p. 37-41.
Astronomy and Astrophysics
Astrophysics
26
A Stars, Abundance, Chemical Elements, Stellar Spectra, Atomic Spectra, Line Spectra, Radial Velocity, Stellar Spectrophotometry
Scientific paper
The method of Hartoog, Cowley, and Cowley (1973) is applied to the general question of element identification in HD 101065, which is often referred to as 'Przybylski's holmium star'. Three spectrograms are analyzed for wavelength coincidences, and a search is conducted for 187 atomic and ionic spectra of 92 elements. Most of the lanthanides, Ca II, and Y II are positively identified, but only weak evidence is found for the iron-peak elements. Some general remarks are made concerning the relative abundances (or absence) of Fe, Co, Y, Zr, Te, Tb, Lu, Yb, Nd, and U. No evidence is obtained for spectral variations or significant radial-velocity variations. It is concluded that iron-peak elements are present in this star, that their spectra are unusually weak with the possible exception of Co I, and that HD 101065 is apparently the only star of the magnetic chemically peculiar sequence with a lanthanide/iron-peak abundance ratio greater than unity.
Aikman Christopher L. G.
Cowley Anne Pyne
Cowley Ch. R.
Crosswhite H. M.
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