2MASSW J0746425+200322: Is the Secondary a Star or Brown Dwarf?

Details 2MASSW J0746425+200322: Is the Secondary a Star or Brown Dwarf? 2MASSW J0746425+200322: Is the Secondary a Star or Brown Dwarf?

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aj....131..638g&link_type=abstract

The Astronomical Journal, Volume 131, Issue 1, pp. 638-639.

Astronomy and Astrophysics

Astronomy

8

Stars: Binaries: General, Stars: Fundamental Parameters, Stars: Individual (2Massw J0746425+200322), Stars: Low-Mass, Brown Dwarfs

Scientific paper

2MASSW J0746425+200322 is the first L dwarf system with a dynamical mass
determination. It has been claimed that the system is young (<500
Myr) and that therefore the secondary is clearly substellar. We argue
that the balance of evidence suggests the system is old; the secondary
is likely either a star or a long-lived transition object.

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