41 ARAE

'41 Arae' is a binary star system in the constellation Ara. The two stars share a highly elliptical orbit that takes several centuries to complete. The estimates of the period range from 693 to 2,200 years,^[1] and the average separation of the two stars is about 210 AUs (or 210 times the average distance between the Earth and the Sun.)
This system has a relatively high proper motion, moving over a second of arc across the sky each year. The fainter member of the pair has a peculiar spectrum that shows a deficiency in metals, which, for astronomical purposes, are the elements heavier than Helium.
The stars in this system show low chromospheric activity, and have a net space velocity of 52 km/s relative to the Sun. This, in combination with their low metallicity, shows that the pair below to the old disk population.^[2]

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References

External links

References

1. Astrobiologically interesting stars within 10 parsecs of the Sun, G. F. Porto de Mello, E. F. del Peloso, L. Ghezzi, , , Astrobiology, 2006
2. High S/N detailed spectral analysis of four G and K dwarfs within 10 PC of the sun, M.-N. Perrin, G. Cayrel de Strobel, M. Dennefeld, , , Astronomy and Astrophysics, 1988

External links

★ 41 Arae 2 SolStation entry.