Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-06
Astronomy and Astrophysics
Astrophysics
accepted in ApJL
Scientific paper
10.1086/522887
We report a late M-type, common proper motion companion to a nearby young visual binary HIP 115147 (V368 Cep), separated by 963 arcseconds from the primary K0 dwarf. This optically dim star has been identified as a candidate high proper motion, nearby dwarf LSPM J2322+7847 by L{\'e}pine in 2005. The wide companion is one of the latest post-T Tauri low mass stars found within 20 pc. We obtain a trigonometric parallax of $51.6\pm0.8$ mas, in good agreement with the Hipparcos parallax of the primary star ($50.7\pm0.6$ mas). Our $BVRI$ photometric data and near-infrared data from 2MASS are consistent with LSPM J2322+7847 being brighter by 1 magnitude in $K_s$ than field M dwarfs at $V-K_s=6.66$, which indicates its pre-main sequence status. We conclude that the most likely age of the primary HIP 115147 and its 11-arcsecond companion HIP 115147B is 20-50 Myr. The primary appears to be older than its close analog PZ Tel (age 12-20 Myr) and members of the TWA association (7 Myr).
Harris Hugh C.
Hennessy Greg S.
Makarov Valeri V.
Monet Alice K. B.
Zacharias Norbert
No associations
LandOfFree
The nearby young visual binary HIP 115147 and its common proper motion companion LSPM J2322+7847 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The nearby young visual binary HIP 115147 and its common proper motion companion LSPM J2322+7847, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nearby young visual binary HIP 115147 and its common proper motion companion LSPM J2322+7847 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-466524