HST/NICMOS observations of a proto-brown dwarf candidate

被引：13
作者：
Apai, D
Tóth, LV
Henning, T
Vavrek, R
Kovács, Z
Lemke, D
机构：
[1] Max Planck Inst Astron, D-69117 Heidelberg, Germany
[2] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[3] NASA Astrobiol Inst, Washington, DC USA
[4] Eotvos Lorand Univ, Dept Astron, H-1117 Budapest, Hungary
[5] Hungarian Acad Sci, Konkoly Observ Budapest, H-1525 Budapest, Hungary
[6] ESTEC, Astrophys Missions Div, NL-2201 Norwijk, Netherlands
来源：
ASTRONOMY & ASTROPHYSICS | 2005年 / 433卷 / 02期
关键词：
binaries : close; planetary systems : protoplanetary disks; stars : formation; stars; low-mass; brown dwarfs; stars : pre-main sequence;
D O I：
10.1051/0004-6361:200500098
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present deep HST/NICMOS observations peering through the outflow cavity of the protostellar candidate IRAS 04381+2540 in the Taurus Molecular Cloud-1. A young stellar object as central source, a jet and a very faint and close (0.6 '') companion are identified. The primary and the companion have similar colours, consistent with strong reddening. We argue that the companion is neither a shock-excited knot nor a background star. The colour/magnitude information predicts a substellar upper mass limit for the companion, but the final confirmation will require spectroscopic information. Because of its geometry, young age and its rare low-mass companion, this system is likely to provide a unique insight into the formation of brown dwarfs.
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页码：L33 / L36
页数：4
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