Spectroscopic binary orbits from ultraviolet radial velocities. X - CW Cephei (HD 218066)

Details Spectroscopic binary orbits from ultraviolet radial velocities. X - CW Cephei (HD 218066) Spectroscopic binary orbits from ultraviolet radial velocities. X - CW Cephei (HD 218066)

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992obs...112..277s&link_type=abstract

The Observatory (ISSN 0029-7704), vol. 112, no. 1111, p. 277-281.

Astronomy and Astrophysics

Astronomy

12

Astronomical Spectroscopy, Binary Stars, Cepheid Variables, Eccentric Orbits, Radial Velocity, Ultraviolet Spectra, Continuous Radiation, Massive Stars, Spectral Resolution, Stellar Temperature

Scientific paper

Observations of CW Cephei were carried out repeatedly in the course of three days in December 1991, using the high-resolution, short-wavelength spectrograph of IUE, with an additional spectrum taken on February 6, 1992. The paper presents a log of these observations, which represent the only high-resolution observations of this star in the archive. The observations have an advantage of Popper's (1974) optical observations that they do not stretch out over a significant part of the apsidal cycle and can thus be treated with the value of omega taken as fixed.

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