A possible third component in the L dwarf binary system DENIS-P J020529.0-115925 discovered with the Hubble Space Telescope
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.
"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.