2006AJ....131..638G

Query : 2006AJ....131..638G

2006AJ....131..638G - Astron. J., 131, 638-639 (2006/January-0)

2MASSW J0746425+200322: is the secondary a star or brown dwarf?

GIZIS J.E. and REID I.N.

Abstract (from CDS):

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.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Stars: Fundamental Parameters - stars: individual (2MASSW J0746425+200322 (read: 2MASSW J0746425+200032)) - Stars: Low-Mass, Brown Dwarfs

CDS comments: The actual name of the star is 2MASSW J0746425+200032

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* AB Dor B ** 05 28 44.4839440512 -65 26 46.035814884           M5+M5-6 99 0
2 LSPM J0746+2000 BD* 07 46 42.56207 +20 00 32.1839       17.9 15.034 L0+L1.5 201 1

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