The Variability of the Hg 2 λ 3984 Line of the Mercury-Manganese Star α And

Details The Variability of the Hg 2 λ 3984 Line of the Mercury-Manganese Star α And The Variability of the Hg 2 λ 3984 Line of the Mercury-Manganese Star α And

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...19513104a&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #131.04; Bulletin of the American Astronomical Society, Vol. 32, p.878

Astronomy and Astrophysics

Astronomy

Scientific paper

In the first ever definitive discovery of spectrum variations in the Mercury-Manganese stars, the Hg 2 λ 3984 line in the binary star α And is found to be variable by comparison of high dispersion spectra with S/N ratios greater than 500. These changes are not due to the orbital motion of the companion. They most likely reflect the hydrodynamical processes in the stellar photosphere. Mercury has a variable spatial abundance which may also be istopically variable in the stellar photosphere.

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