A very low mass T dwarf binary

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A very low mass T dwarf binary

Post by Edasich on 5th July 2008, 10:48 am

Keck Laser Guide Star Adaptive Optics Monitoring of 2MASS J1534-2952AB: First Dynamical Mass Determination of a Binary T Dwarf

Each object is below 30 Jupiter masses. Orbital period is 4 years and average seoaration 2.3 AUs.
Young aged (0.78- Gyr) and relatively hot (<10-4.5 LSun).
Teff1=1028 K and Teff1=978 K.
There are radii too: R1=0.98 Rj and R2= 0.993 Rj (a bit bloated secondary?) Suspect

Water zone around 0.0056 AUs (i.e 5.6x10-3 AUs)? Brrr.... What a Face
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