Time-series observations of the ultracool dwarf SSSPM J0109-5101

被引:11
作者
Koen, C [1 ]
机构
[1] S African Astron Observ, ZA-7935 Cape Town, South Africa
关键词
stars : low mass; brown dwarfs; stars : variables : other;
D O I
10.1111/j.1365-2966.2005.08654.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The results of five nights of photometric monitoring of SSSPM J0109-5101 are presented. Observations in the I-C band show a probable periodicity of 7.8 h, with an amplitude of 19 mmag. The results of 5 h of measurements in the R band are particularly interesting, showing several flares.
引用
收藏
页码:1151 / 1154
页数:4
相关论文
共 7 条
[1]  
Butler C. J., 1991, Memorie della Societa Astronomica Italiana, V62, P243
[2]  
DOYLE JG, 1989, ASTRON ASTROPHYS, V208, P208
[3]   A search for short time-scale I-band variability in ultracool dwarfs [J].
Koen, C .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 346 (02) :473-482
[4]   I-band time-series observations of five bright ultracool dwarfs [J].
Koen, C .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2004, 354 (02) :378-386
[5]   Discovery of three nearby L dwarfs in the Southern Sky [J].
Lodieu, N ;
Scholz, RD ;
McCaughrean, MJ .
ASTRONOMY & ASTROPHYSICS, 2002, 389 (01) :L20-L23
[6]   DOPHOT, A CCD PHOTOMETRY PROGRAM - DESCRIPTION AND TESTS [J].
SCHECHTER, PL ;
MATEO, M ;
SAHA, A .
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1993, 105 (693) :1342-1353
[7]   SSSPM J0829-1309: a new nearby L dwarf detected in SuperCOSMOS sky surveys [J].
Scholz, RD ;
Meusinger, H .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 336 (03) :L49-L52