Searching for very low-mass stars and brown dwarfs with DENIS

被引：100

作者：

Delfosse, X

Tinney, CG

Forveille, T

Epchtein, N

Borsenberger, J

Fouqué, P

Kimeswenger, S

Tiphène, D

机构：

[1] Observ Grenoble, F-38041 Grenoble, France

[2] Observ Geneva, CH-1290 Sauverny, Switzerland

[3] Anglo Australian Observ, Epping, NSW 2121, Australia

[4] Observ Paris, DESPA, F-92195 Meudon, France

[5] Observ Nice, F-06304 Nice 04, France

[6] Inst Astrophys, F-75014 Paris, France

[7] European So Observ, Santiago 19, Chile

[8] Univ Innsbruck, Inst Astron, A-6020 Innsbruck, Austria

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 135卷 / 01期

关键词：

stars; low-mass; brown dwarfs; stars : luminosity function; mass function; infrared : stars; surveys;

D O I：

10.1051/aas:1999158

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of infrared spectroscopic observations of a sample of very low-mass stars and brown dwarf candidates detected in a 230 square degree area by the DENIS (DEep Near Infrared Southern sky; Epchtein, 1997) survey. We find that objects as faint as the faintest known stars are easily detected by DENIS. This sample also includes three members of the new "L" dwarf class, one of which was the first confirmed isolated field brown dwarf. As this data represents similar to 1% of the total DENIS survey area, the completed survey can be expected to have a dramatic impact on the study of the faintest stars and brown dwarfs. In particular, it should detect similar to 300 of the new and poorly understood "L" class of dwarfs.

引用

页码：41 / 56

页数：16

共 61 条

[51] DISTANCE ERRORS AND THE STELLAR LUMINOSITY FUNCTION [J].