The mass-luminosity relation in the L/T transition: Individual dynamical masses for the new J-band flux reversal binary SDSS J105213.51+442255.7AB
We have discovered that SDSS J105213.51+442255.7 (T0.5 ± 1.0) is a binary in Keck laser guide star adaptive optics imaging, displaying a large J- to K-band flux reversal (mag, mag). We determine a total dynamical mass from Keck orbital monitoring (88 ± 5) and a mass ratio by measuring the photocenter orbit from CFHT/WIRCam absolute astrometry (). Combining these provides the first individual dynamical masses for any field L or T dwarfs, 49 ± 3 for the L6.5±1.5 primary and 39 ± 3 for the...[Show more]
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal, The|
|01_Dupuy_The_mass-luminosity_relation_2015.pdf||1.43 MB||Adobe PDF|
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