Links (Solar neighbours)
*** DwarfArchives (compilation of M, L, T, and Y dwarfs)
The link address is: http://spider.ipac.caltech.edu/staff/davy/ARCHIVE/index.shtml
*** Database of ultracool parallaxes
The link address is: https://www.cfa.harvard.edu/%7Etdupuy/plx/Database_of_Ultracool_Parallaxes.html