| Issue |
A&A
Volume 389, Number 1, July I 2002
|
|
|---|---|---|
| Page(s) | L20 - L23 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20020698 | |
| Published online | 14 June 2002 | |
Letter to the Editor
Discovery of three nearby L dwarfs in the Southern Sky*
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Corresponding author: N. Lodieu, nlodieu@aip.de
Received:
22
April
2002
Accepted:
7
May
2002
We report the discovery of three L dwarfs in the solar vicinity within 30 parsecs. These objects were originally found as proper motion objects from a combination of R and I photographic plates measured as part of the SuperCOSMOS Sky Surveys. We subsequently identified these objects as bona fide brown dwarf candidates on the basis of their R-I colour, as first criterion, and subsequently their J-K colours when the infrared data were available from the 2MASS database. Spectroscopic observations in the optical with the ESO 3.6 m/EFOSC2 and in the near-infrared with the NTT/SOFI led to the classification of their spectral types as early L dwarfs.
Key words: surveys / stars: distances / stars: kinematics / stars: late-type / stars: low-mass, brown dwarfs / solar neighbourhood
© ESO, 2002
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