IC and RC band time-series observations of some bright ultracool dwarfs

被引：31

作者：

Koen, C ^{[1
]}

机构：

[1] Univ Western Cape, Dept Stat, ZA-7535 Bellville, South Africa

[2] S African Astron Observ, ZA-7935 Cape Town, South Africa

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 360卷 / 03期

关键词：

stars : low mass; brown dwarfs; stars : variables : other;

D O I：

10.1111/j.1365-2966.2005.09119.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The results of more than 100 h of CCD photometric monitoring of 10 L dwarfs and two T dwarfs are presented. Reasonable evidence is shown for I-C band variability in DENIS 0255-4700, DENIS 1705-0516 and 2M 2104-1037. Substantial brightening of the T dwarf binary is an element of Indi Bab was observed over the course of 3.6 h; it is unlikely that this could have been caused by surface spots. No unequivocal variability could be detected in the RC band.

引用

页码：1132 / 1142

页数：11

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