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Contribution to the study of composite spectra - X. HD 3210/1, 27395, 39847, 70826 and 218257/8: five new spectroscopic binaries in multiple systems
We present the results of a radial velocity (RV) study of five new SB1spectroscopic binaries with composite spectra: HD 3210/1, 27395, 39847,70826 and 218257/8. We analyse the composition of those objects whichare found to be triple systems (at least): all of them include a coolevolved star, a hot star of type B or A and a third component.From the RV measurements of the cool components, we derive the orbitalelements of the corresponding spectroscopic binaries for the first time.Their analysis leads us to propose a model which describes the nature ofthe individual components of those five systems, with some predictionson their angular separations and magnitudes. In some cases, thespectroscopic companion of the cool component is not the hot starcontributing to the composite spectrum.
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Osservazione e dati astrometrici
| Costellazione: | Cancro |
| Ascensione retta: | 08h24m48.65s |
| Declinazione: | +20°08'34.2" |
| Magnitudine apparente: | 8.612 |
| Distanza: | 257.732 parsec |
| Moto proprio RA: | 0 |
| Moto proprio Dec: | -7.3 |
| B-T magnitude: | 8.743 |
| V-T magnitude: | 8.623 |
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