Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2009-10-15
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
13 pages, 3 figures, submmited to ApJ
Scientific paper
We have made a search for common proper motion (CPM) companions to the wide binaries in the solar vicinity. We found that the binary GJ 282AB has a very distant CPM companion (NLTT 18149) at a separation $s=1.09 \arcdeg$. Improved spectral types and radial velocities are obtained, and ages determined for the three components. The Hipparcos trigonometric parallaxes and the new radial velocities and ages turn out to be very similar for the three stars, and provide strong evidence that they form a physical system. At a projected separation of 55733AU from GJ 282AB, NLTT 18149 ranks among the widest physical companions known.
Allen Christine
Costero Rafael
Echevarria J. J.
Hernandez-Alcantara Alejandro
Poveda Arcadio
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