| Autor: |
Griffin, R. F., Fekel, F. C., Morton, M. D., Fried, R. E. |
| Zdroj: |
Journal of Astrophysics and Astronomy; September 1994, Vol. 15 Issue: 3 p309-319, 11p |
| Abstrakt: |
HD 163621 is a double-lined spectroscopic binary in a circular orbit whose period is 3.3 days. Spectral classification of the components has proved difficult, but current results of K0 V and late K V are reasonably consistent with our best model of the system, which has spectral types of G8V and K7V. The object shows photometric variability and chromospheric activity and is therefore a member of the BY Draconis class of variables. The minimum masses are quite small, 0.10 and 0.07 M⊙ for the primary and secondary, respectively, suggesting an orbital inclination of about 30°. The system is synchronously rotating. Its distance is estimated to be 31 pc, which makes it an excellent candidate for a trigonometric parallax determination. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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