Ultraviolet Observations and Variability of Alpha-Andromedae

Details Ultraviolet Observations and Variability of Alpha-Andromedae Ultraviolet Observations and Variability of Alpha-Andromedae

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26as...43..209r&link_type=abstract

Astronomy and Astrophysics Supplement, Vol. 43, P. 209, 1981

Astronomy and Astrophysics

Astrophysics

19

Scientific paper

UV Copernicus spectrum scans of the Hg Mn star Alpha Andromedae show line strength variations with a period of 0°.96363162. In addition, short period radial velocity variations for the three strong Si II lines at λλ1193.284, 1260.418, and 1309.274 have been found. A number of spectral features indicate the possibility of an extended atmosphere by additional blueshifted absorption components.

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