Planetary-mass binary 2MASS J11193254-1137466

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Planetary-mass binary 2MASS J11193254-1137466

Post by Lazarus on 8th June 2017, 1:38 pm

The L-dwarf 2MASS J1119-1137 turns out to be a planetary-mass binary. Assuming membership of the TW Hydrae association, the masses of each component are estimated at 3.7+1.2-0.9 Jupiter masses, assuming the system is a young field binary then the masses increase to 9.2+2.3-1.9 and 9.0+2.4-1.9 Jupiter masses for the primary and secondary respectively. Binary projected separation is 3.60.9 AU.

Best et al. "The Young L Dwarf 2MASS J11193254-1137466 is a Planetary-Mass Binary"
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