Spectral classification of weak-lined stars discovered photometrically

Details Spectral classification of weak-lined stars discovered photometrically Spectral classification of weak-lined stars discovered photometrically

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...309..260a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 309, Oct. 1, 1986, p. 260-264.

Other

19

Dwarf Stars, Line Spectra, Metallicity, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

Olsen has compiled a mixed list of 800 weak-lined dwarfs plus 75 other interesting stars, found by obtaining Strömgren four-color photometry for 14,816 A5 - G0 Henry Draper stars. The author has obtained spectra of 140 of those, selected at random, and found that 97% of the proposed weak-lined dwarfs are indeed such; the remainder are composities (1%) or normal, more luminous stars (2%). Spectral types were generally obtained form the hydrogen line, iron-peak metals, and G bands. Deficiencies in the metallic-line types are compared with [Fe/H] values and Δm1 (metallic strength) indices.

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