WISE J135501.90-825838.9 is a Nearby, Young, Extremely Low-mass Substellar Binary

2020/05/13 by Theissen, C. A., Gagliuffi, D. C. Bardalez, Faherty, J. K. +2
#Earth and Planetary Astrophysics (astro-ph.EP) #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR)

paper · doi:10.48550/arxiv.2005.07096

Abstract

We present a parallax solution for WISE J135501.90-825838.9, a spectral binary with spectral types L7+T7.5 and candidate AB Doradus member. Using WISE astrometry, we obtain a distance of d = 16.7±5.3 pc. This preliminary parallax solution provides further evidence that WISE J135501.90-825838.9 is a member of AB Doradus (130-200 Myr), and when combined with evolutionary models predicts masses of 11 M_Jup and 9 M_Jup for both components.

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