2004A&A...427L...1F

Query : 2004A&A...427L...1F

2004A&A...427L...1F - Astronomy and Astrophysics, volume 427, L1-4 (2004/11-3)

An L0 dwarf companion in the brown dwarf desert, at 30 AU.

FORVEILLE T., SEGRANSAN D., DELORME P., MARTIN E.L., DELFOSSE X., ACOSTA-PULIDO J.A., BEUZIT J.-L., MANCHADO A., MAYOR M., PERRIER C. and UDRY S.

Abstract (from CDS):

We present the discovery of an L0 companion to the nearby M1.5 dwarf G 239-25, at a projected distance of 31AU. It is the faintest companion discovered so far in our adaptive optics survey of all known M dwarfs within 12pc, and it lies at the stellar/substellar limit. Given the assumed age of the primary star, the companion is likely an extremely low mass star. The long orbital period of G 239-25AB (≃100years) precludes a direct mass determination, but the relatively wide angular separation will allow detailed analyses of its near infrared and visible spectra.

Abstract Copyright: ∼

Journal keyword(s): very low mass stars - brown dwarfs - binary stars

Simbad objects: 3

Full paper

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Number of rows : 3

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023
1	HD 42581B	BD*	06 10 34.80	-21 52 00.0					T6.5	496
2	GD 165B	BD*	14 24 39.09480	+09 17 10.4352				20.53	L4V	205
3	G 239-25	PM*	14 42 21.5756362789	+66 03 20.844850251	12.43	10.708	10.383		M3V	75

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