One type of these objects have 1.7 and 2.2 micrometer methane signatures in their spectra, while one important test for them is the presence of the indication of lithium in their spectra.  
Two of these stellar objects are located in the Epsilon Indi system.  One type of these objects have 1.7 and 2.2 micrometer methane signatures in their spectra, while one important test for them is the presence of the indication of lithium in their spectra.  One example of this type of star is Gliese 229 B.  They include cooler members of the L spectral class and all objects in the T class.   For 10 points, name these substellar objects that are less than 0.08 solar masses and are not hot enough to start thermonuclear reactions.
Two of these stellar objects are located in the Epsilon Indi system.  
brown dwarf