Bibcode
EROS Collaboration; Goldman, B.; Delfosse, X.; Forveille, T.; Afonso, C.; Alard, C.; Albert, J. N.; Andersen, J.; Ansari, R.; Aubourg, É.; Bareyre, P.; Bauer, F.; Beaulieu, J. P.; Borsenberger, J.; Bouquet, A.; Char, S.; Charlot, X.; Couchot, F.; Coutures, C.; Derue, F.; Ferlet, R.; Fouqué, P.; Glicenstein, J. F.; Gould, A.; Graff, D.; Gros, M.; Haissinski, J.; Hamilton, J. C.; Hardin, D.; de Kat, J.; Kim, A.; Lasserre, T.; Lesquoy, É.; Loup, C.; Magneville, C.; Mansoux, B.; Marquette, J. B.; Martín, E. L.; Maurice, É.; Milsztajn, A.; Moniez, M.; Palanque-Delabrouille, N.; Perdereau, O.; Prévot, L.; Regnault, N.; Rich, J.; Spiro, M.; Vidal-Madjar, A.; Vigroux, L.; Zylberajch, S.
Bibliographical reference
Astronomy and Astrophysics, v.351, p.L5-L9 (1999)
Advertised on:
11
1999
Journal
Citations
77
Refereed citations
70
Description
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, which for very cool dwarfs
is a proof of brown dwarf status. 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 one of the coolest L
dwarfs of known distance and luminosity. Based on observations made at
the European Southern Observatory, La Silla, Chile.