Resumo

SCARFE, C. D.. Spectroscopic Orbits of Three Binaries. Rev. mex. astron. astrofis [online]. 2017, vol.53, n.2, 00013.  Epub 21-Out-2019. ISSN 0185-1101.

This paper presents new spectroscopic orbits of three binaries with evolved primaries and periods of the order of a few years, two of them very eccentric. All the orbits were determined primarily from observations made with the DAO 1.2-m telescope and coudé spectrograph. Observations were obtained using the radial velocity spectrometer until it was decommissioned in 2004, and since then using a CCD detector, and cross-correlating the spectra with those of standard stars. It will be evident that the latter procedure leads to smaller observational scatter than the former did.

Palavras-chave : binaries; spectroscopic; stars: individual (6 Persei HR 8078 HD 212989).