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Contribution to the study of composite spectra: XI. Orbital elements of some faint systems
We present the results of a radial-velocity study of nine new faint SB1spectroscopic binaries with composite spectra: HD 137975-6, 177984, HDE226489, 231613-4, 255387-8, 256138-9, 264997-8, 276787 and 293041-2. Theobservations were made at Haute-Provence and Cambridge observatorieswith CORAVEL instruments between 1982 and 2006. From the radial-velocitymeasurements of the cool components, we derive the orbital elements ofthose spectroscopic binaries for the first time. Using all the availabledata, we propose a model for each system that describes the nature ofthe individual components, with an estimation of the angular separationand orbital inclination. Finally we discuss the rotation-revolutionsynchronism of the cool components.
| A survey of stars with composite spectra.
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Observation and Astrometry data
| Constellation: | Αετός |
| Right ascension: | 19h06m37.65s |
| Declination: | +07°41'27.4" |
| Apparent magnitude: | 9.271 |
| Proper motion RA: | 22.4 |
| Proper motion Dec: | -5.9 |
| B-T magnitude: | 9.886 |
| V-T magnitude: | 9.322 |
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