Brown Dwarf Companions to G-type Stars. I: Gliese 417b and Gliese 584c
نویسندگان
چکیده
We present astrometric and spectroscopic observations confirming that two nearby G dwarf systems (Gliese 417 = BD+362162 and Gliese 584AB = η CrB AB) have a widely separated, L dwarf, substellar companion. Using age estimates of the G dwarf primaries, we estimate masses for these L dwarfs from theoretical evolutionary tracks. For the L4.5 dwarf Gl 417B we estimate an age of 0.08-0.3 Gyr and a mass
منابع مشابه
Brown Dwarf Companions to G - type Stars . I : Gliese 417
We present astrometric and spectroscopic observations confirming that two nearby G dwarf systems (Gliese 417 = BD+362162 and Gliese 584AB = η CrB AB) have a widely separated, L dwarf, substellar companion. Using age estimates of the G dwarf primaries, we estimate masses for these L dwarfs from theoretical evolutionary tracks. For the L4.5 dwarf Gl 417B we estimate an age of 0.08-0.3 Gyr and a m...
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