Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cha%26a..10..342t&link_type=abstract
Chinese Astronomy and Astrophysics, Volume 10, Issue 4, p. 342-346.
Astronomy and Astrophysics
Astrophysics
3
Scientific paper
We measured the rotations of all the primaries and 5 of the secondaries in 33 RS CVn binary systems, using the three lines in the red region, FeI 6663, FeI 6678 and CaI 6718. A comparison with synchronous rotation shows that none of the systems observed (some with P > 14 d) contradicts the assumption of synchronous rotation, contrary to a previous view.
Liu Xue-Fu
Tan Hui-Song
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