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Spectroscopic orbits of eclipsing binaries - AA UMa
High dispersion and time resolution spectra for the eclipsing binary AAUMa, obtained using an intensified Reticon, were measured bycross-correlation techniques. The spectra of the two components arefound to be very similar, and AA UMa is shown to belong to Subtype W ofW UMa binaries. The orbital elements of the system are determined andcompared with other W UMa binaries. It is found that the orbital periodis 0.48171 days and that the estimated mean mass center velocity for thesystem is -34.8 km/s. The mass ratio between the components isdetermined to be 0.54 and the magnitude difference in the wavelengthobserved is estimated to be 0.36.
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Osservazione e dati astrometrici
| Costellazione: | Pesci |
| Ascensione retta: | 01h26m38.95s |
| Declinazione: | +10°53'51.7" |
| Magnitudine apparente: | 8.622 |
| Moto proprio RA: | -29.3 |
| Moto proprio Dec: | -22.1 |
| B-T magnitude: | 9.04 |
| V-T magnitude: | 8.657 |
Cataloghi e designazioni:
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