G 112-29 (=NLTT 18149), a Very Wide Companion to GJ 282 AB with a Common Proper Motion, Common Parallax, Common Radial Velocity and Common Age

Abstract

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.

13 pages, 3 figures, submmited to ApJ

References in corpus (15)

• Validation of the new Hipparcos reduction
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics
• Medium-resolution Isaac Newton Telescope library of empirical spectra - II. The stellar atmospheric parameters
• Improved Astrometry and Photometry for the Luyten Catalog. II. Faint Stars and the Revised Catalog
• Meeting the Cool Neighbors VIII: A preliminary 20-parsec census from the NLTT catalogue
• New Distant Companions to Known Nearby Stars. II. Faint companions of Hipparcos stars and the frequency of wide binary systems
• Disk and Halo Wide Binaries from the Revised Luyten Catalog: Probes of Star Formation and MACHO Dark Matter
• Proper Motions of the BN Object and the I Radio Source in Orion: Where and When Did BN Become a Runaway Star?
• Monitoring the Large Proper Motions of Radio Sources in the Orion BN/KL Region
• Dynamical decay of a massive multiple system in Orion KL?
• Common Proper Motion Companions to Nearby Stars: Ages and Evolution
• Are Proxima and Alpha Centauri Gravitationally Bound?
• New distant companions to known nearby stars: I. GJ 4047B, GJ 718B, GJ 747.2C, GJ 4100B, and GJ 4153B
• An extremely wide and very low-mass pair with common proper motion. Is it representative of a nearby halo stream?

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