Abbreviated Journal Title
binaries : visual; stars : individual (DENIS-P J020529.0-115925); stars; : low-mass, brown dwarfs; techniques : high angular resolution; LOW-MASS STARS; BROWN DWARFS; SPECTRAL CLASSIFICATION; T-DWARF; MULTIPLICITY; PHOTOMETRY; Astronomy & Astrophysics
We present results showing that the multiple system DENIS-P J020529.0-115925 is likely to be a triple system of very low mass stars and brown dwarfs. The secondary of this previously known binary system shows a clear elongation on six images obtained at six different epochs. Significant residuals remain after point-spread function (PSF) subtraction on these images, which is characteristic of multiplicity and indicates that the secondary is probably a double itself. Dual-PSF fitting shows that the shape of the secondary is consistent with that of a binary system. These measurements show that the probability that DENIS-P J020529.0-115925 is a triple system is very high. The photometric and spectroscopic properties of the system are consistent with the presence of three components, with spectral types L5, L8, and T0.
Bouy, H.; Martín, E. L.; Brandner, W.; and Bouvier, J., "A possible third component in the L dwarf binary system DENIS-P J020529.0-115925 discovered with the Hubble Space Telescope" (2005). Faculty Bibliography 2000s. 5003.