Discovery of three nearby L dwarfs in the Southern Sky

被引：28

作者：

Lodieu, N ^{[1
]}

Scholz, RD ^{[1
]}

McCaughrean, MJ ^{[1
]}

机构：

[1] Inst Astrophys, D-14482 Potsdam, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 389卷 / 01期

关键词：

surveys; stars : distances; stars : kinematics; stars : late-type; stars; low-mass; brown dwarfs; solar neighbourhood;

D O I：

10.1051/0004-6361:20020698

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 ESO3.6 m/EFOSC2 and in the near-infrared with the NTT/SOFI led to the classification of their spectral types as early L dwarfs.

引用

页码：L20 / L23

页数：4

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