Contribution to the study of F-G-K-M binaries. X. HD 54901, HD 120544 and HD 123280, three nearby F-type spectroscopic binaries

The orbital elements of HD 54901, HD 120544 and HD 123280, three nearby F-type spectroscopic binaries, are presented. They are based on observations made between 1982 and 2004 with the CORAVEL instrument of Observatoire de Haute-Provence. Physical parameters are derived for the two components of HD 54901 (SB2) and for the primaries of HD 120544 and HD 123280. The rotation-revolution synchronism of the detected components is investigated. Pseudosynchronism is very likely achieved by the F7 V secondary component of HD 54901, whereas the F2/3 IV primary has not yet reached this stage. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)