EROS 2 proper motion survey: a field brown dwarf and an L dwarf companion to LHS 102 - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 1999

EROS 2 proper motion survey: a field brown dwarf and an L dwarf companion to LHS 102

B. Goldman
  • Function : Author
X. Delfosse
  • Function : Author
T. Forveille
E. Aubourg
F. Bauer
  • Function : Author
J.P. Beaulieu
  • Function : Author
S. Char
  • Function : Author
X. Charlot
  • Function : Author
F. Couchot
C. Coutures
  • Function : Author
F. Derue
  • Function : Author
R. Ferlet
  • Function : Author
P. Fouque
  • Function : Author
J.F. Glicenstein
  • Function : Author
A. Gould
  • Function : Author
D. Graff
  • Function : Author
M. Gros
  • Function : Author
J. Haissinski
  • Function : Author
D. Hardin
  • Function : Author
J. de Kat
  • Function : Author
T. Lasserre
  • Function : Author
E. Lesquoy
  • Function : Author
C. Loup
  • Function : Author
C. Magneville
  • Function : Author
B. Mansoux
  • Function : Author
J.B. Marquette
E.L. Martin
  • Function : Author
E. Maurice
  • Function : Author
A. Milsztajn
  • Function : Author
M. Moniez
  • Function : Author
N. Palanque-Delabrouille
  • Function : Author
O. Perdereau
  • Function : Author
L. Prevot
  • Function : Author
N. Regnault
  • Function : Author
J. Rich
  • Function : Author
M. Spiro
  • Function : Author
A. Vidal-Madjar
  • Function : Author
L. Vigroux
  • Function : Author
S. Zylberajch
  • Function : Author
C. Afonso
  • Function : Author
C. Alard
  • Function : Author
J.N. Albert
  • Function : Author
J. Andersen
  • Function : Author
R. Ansari
  • Function : Author

Abstract

We report the discovery of two L dwarfs (the new spectral class defined for dwarfs cooler than the M type) in a two-epoch CCD proper motion survey of 413 square degrees, complemented by infrared photometry from DENIS. One of them has a strong lithium line and is therefore a brown dwarf. The other is a common proper motion companion to the mid-M dwarf LHS 102 (GJ 1001), which has a well determined trigonometric parallax. LHS 102B is thus the coolest L dwarf of known distance and luminosity. Its infrared absolute photometry are very well reproduced by the Allard et al DUSTY models.

Dates and versions

in2p3-00014069 , version 1 (17-10-2003)

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Cite

B. Goldman, X. Delfosse, T. Forveille, E. Aubourg, P. Bareyre, et al.. EROS 2 proper motion survey: a field brown dwarf and an L dwarf companion to LHS 102. Astronomy and Astrophysics - A&A, 1999, 351, pp.L5-L9. ⟨in2p3-00014069⟩
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