Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...252..302o&link_type=abstract
Astrophysical Journal, Part 1, vol. 252, Jan. 1, 1982, p. 302-304.
Astronomy and Astrophysics
Astrophysics
10
Abundance, Chromosphere, H Lines, Interstellar Matter, K Lines, Magnesium, Ultraviolet Spectra, Absorption Spectra, High Resolution, Interstellar Extinction, Iue, Line Spectra
Scientific paper
The profiles are virtually identical with the solar profiles except for the presence of an absorption feature near line center in the h and k lines of Alpha Centauri A. It is found that this absorption feature can be explained by interstellar absorption of Mg II along the line of sight. The average density of Mg II is found to be 2.75 plus or minus 0.7 x 10 to the -7th/cu cm, in good agreement with the previously determined values in the solar vicinity in the direction of Alpha CMa and Alpha Lyr.
Kondo Yoshihiko
Oegerle William R.
Stencel Robert E.
Weiler Edward J.
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