A Model Atmosphere Analysis of the Binary 112 Herculis

Details A Model Atmosphere Analysis of the Binary 112 Herculis A Model Atmosphere Analysis of the Binary 112 Herculis

Dec 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970ap%26ss...9..461s&link_type=abstract

Astrophysics and Space Science, Volume 9, Issue 3, pp.461-481

Astronomy and Astrophysics

Astrophysics

19

Scientific paper

Double-lined spectra have been obtained at 2 Å/mm for the Mn star 112 Herculis AB. The components are shown to be a B6.5V star and A2V star. Hydrogen-line-blanketed models are used to calculate atmospheric abundances. The best models appear to beT e=13500 K, logg=4.0, ξ T =2.5 km/sec for the primary; andT e=10000K, logg=4.2, ξ T =6 km/sec for the secondary. Both stars appear to have the same abundances. Helium, carbon, magnesium, aluminum, silicon, calcium, vanadium, and nickel appear to be considerably underabundant; phosphorus, scandium, titanium, manganese, iron, gallium, and mercury considerably overabundant; and chromium, strontium, and zirconium normal in abundance.

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