A Young Planetary Mass Companion to the Nearby M Dwarf VHS J125601.92-125723.9
Abstract
We have recently identified a young, very red (J - Ks = 2.47 mag) late L-type companion at 8.06'' +/- 0.03'' (~102 AU) from a previously unrecognized M dwarf. We determined the parallactic distance of the system to be 12.7+/-1.0 pc. Non-detection of lithium and the kinematics of the primary allowed us to constrain the age of the system in the range of 150-300 Myr. By comparison with theoretical evolutionary models we derived a mass of 73+20 -15 M Jup for the primary, at around the substellar mass regime and 11.2+9.7 -1.8 M Jup for the secondary, near the deuterium burning mass limit.
- Publication:
-
Young Stars & Planets Near the Sun
- Pub Date:
- January 2016
- DOI:
- 10.1017/S1743921315006493
- Bibcode:
- 2016IAUS..314..232G
- Keywords:
-
- stars: brown dwarfs;
- stars: imaging;
- infrared: planetary systems;
- stars: individual (VHS J125601.92-125723.9)